304,113 Senior Engineer jobs in India

Phenom Intro:

Our purpose is to help a billion people find the right work Phenom is an AI-Powered talent experience platform that is redefining the HR tech space. We have grown into a global organization with offices in 6 countries and over 1,500 employees. As an HR tech unicorn organization, innovation and creativity is within our DNA. Come help us make every talent moment Phenomenal

Job Summary:

We are looking for a highly skilled Product Development Engineer III (Full-Stack) to lead the design and development of scalable, secure, and highly efficient backend services and systems. You will work on building innovative solutions, mentor junior engineers, and ensure the operational excellence of our platforms.

What you have to do:

• Architect and design end-to-end, large-scale full-stack systems that are scalable, secure, and maintainable, ensuring seamless integration between frontend and backend components.
• Lead full-stack product development efforts, translating business objectives into technical solutions with a focus on SAAS architecture, user experience, and backend system performance.
• Develop and maintain frontend user interfaces using JavaScript and , while ensuring backend services in Java/J2EE, REST APIs, and MongoDB are efficient and scalable.
• Ensure systems are compatible with DevOps processes, implementing best practices for CI/CD pipelines, logging, monitoring, and overall operational needs.
• Work independently and collaboratively on full-stack projects, delivering high-quality, scalable solutions in a fast-paced environment.
• Maintain operational excellence by reducing on-call volume, driving Root Cause Analysis (RCA) for full-stack systems, and fostering system-wide improvements.
• Collaborate with cross-functional teams, including product managers and designers, to ensure successful product delivery and alignment with business requirements.
• Mentor and guide junior engineers (PDE I/II) in both frontend and backend development, helping them advance their technical skills and grow within the organization.

Work Experience

What you've done:

• 8+ years of software development experience, focusing on full-stack development.
• Expertise in
  Java/J2EE
  and building backend services using
  REST
  and
  JSON
  .
• Strong
  frontend
  experience with
  JavaScript
  and
  
  , building responsive and user-friendly web applications.
• Experience designing and implementing
  scalable, distributed systems
  in production environments.
• Strong understanding of cloud platforms (
  AWS
  ,
  Azure
  ) and hands-on experience with cloud-based deployments.
• Proven experience leading teams and mentoring engineers, driving system-wide architectural decisions.
• Operational experience with post-launch troubleshooting, system monitoring, and on-call responsibilities.

We're Nagarro, we are a Digital Product Engineering company that is scaling in a big way We build products, services, and experiences that inspire, excite, and delight. We work at scale across all devices and digital mediums, and our people exist everywhere in the world experts across 36 countries, to be exact). Our work culture is dynamic and non-hierarchical. We are looking for great new colleagues. That is where you come in

REQUIREMENT:

• Define a compelling product vision and strategy for the IoT platform, aligned with organizational goals and digital transformation objectives.
• Incorporate smart building and smart city trends to ensure the platform is forward-looking.
• Collaborate with global stakeholders including business leaders, engineering, design, and external partners to shape the product roadmap.
• Establish a structured Use Case intake and prioritization process to ensure transparency and alignment with business priorities.
• Partner with business teams to co-create business cases, establish success criteria, and track ROI.
• Monitor industry trends and translate insights into product features and client-facing solutions.
• Translate product strategy into a prioritized backlog of user stories and requirements.
• Own the end-to-end product lifecycle from ideation to launch and continuous improvement.
• Manage risks, dependencies, and blockers to ensure timely delivery of business value.
• Prioritize features, enhancements, and defect fixes based on user feedback, technical feasibility, and strategic impact.
• Lead cross-functional teams to deliver platform features and milestones.
• Champion features that maximize scalability, reusability, and impact across geographies.
• Ensure features meet industry best practices in IoT and smart infrastructure integration.
• Conduct in-depth market research on facility management, IoT, and smart building technologies.
• Benchmark the IoT platform against competitors and global best practices.
• Identify opportunities for product differentiation, innovation, and new revenue streams.
• Drive adoption of IoT solutions by engaging business leads, IT, sponsors, and security teams.
• Track, analyze, and communicate product performance using KPIs and user data.
• Facilitate workshops, demonstrations, and training sessions to ensure stakeholder alignment and end-user adoption.
• Advocate for an outstanding user experience grounded in user research and feedback.
• Evaluate IoT sensor and hardware catalogues for compatibility, interoperability, and scalability.
• Assess vendor offerings and recommend technology updates or integrations.
• Oversee ecosystem partnerships with technology providers, start-ups, and solution vendors.
• Support business development by preparing proposals, responding to RFPs, and engaging in bid processes.
• Provide advisory expertise to clients on smart building/city strategies, digital twins, and sustainability.
• Represent the organization in conferences and client engagements to strengthen thought leadership.

RESPONSIBILITIES:

• Perform in-depth analyses of market trends, business needs, benchmarking, and deficiencies to provide actionable recommendations, strategies, and plans.
• Engage with customers to understand their business challenges and propose innovative solutions.
• Contribute to RFP responses and business opportunities.
• Represent the organization at industry forums and events.
• Write white papers, blogs, and support thought leadership initiatives.
• Conduct requirement analysis, management, and development activities.
• Work on functional specifications, use cases, story preparation, and process flow diagrams.
• Collaborate with cross-functional teams in Agile projects to ensure delivery of high-quality solutions.

Vocera Now a part of Stryker is looking for a talented, hands-on Principal Engineer (Backend Developer with Spring Boot) to join our growing organisation. You will be responsible for designing and implementing common org services, which will be the building block of next-generation Patient care software solutions. This position will report to the Manager of R&D.

What you will do:

Technical Responsibilities:

• Designing and implementing Microservices.
• Partnering effectively with product owners and key internal stakeholders to ascertain product requirements.
• Applying SOLID design principles and design patterns to address specific product needs.
• Practicing good engineering methodologies within an Agile development framework.
• Actively engaging in continuous learning through peer review and professional development opportunities.
• Ensuring product quality through unit, functional, and system tests in collaboration with automation engineers.
• Creating and maintaining comprehensive data model designs.
• Documenting processes, designs, and product capabilities as required.

What you will need:

Competencies:

• Track record of building and delivering solutions based on a solid understanding of customer needs.
• Results-driven, hands-on approach to the full product life cycle from architecture development to product implementation.
• A passion for the end-to-end development of quality software products.
• Excellent troubleshooting and debugging, communications, and documentation skills.
• Resourceful and able to solve complex problems through adapting technology and a deep understanding of product architecture.
• Proficient in designing and developing microservices architecture, with expertise in scalable and resilient systems.
• Proficient in designing and developing microservices architecture with expertise in containerization, orchestration, and cloud-native technologies.
• Additionally, hands-on experience in optimizing microservices for performance, scalability, and security would be considered a significant asset, further enhancing the candidate's suitability for the role.

PREFERRED QUALIFICATIONS:

• Education Requirements:bachelors degree in software engineering/ computer science or related discipline & 13+ years of work experience.

Technical Skills:

• Proficient in building robust back-end applications using Spring Boot.
• Strong experience with containerization and orchestration tools such as Docker and Kubernetes.
• Solid understanding of database technologies, including SQL (e.g., MySQL, PostgreSQL) and NoSQL (e.g., MongoDB, Cassandra).
• Hands-on expertise with Kafka Confluent for event streaming and message brokering.
• In-depth knowledge of microservice architecture, including designing, developing, and deploying scalable services.
• Familiarity with cloud platforms such as AWS, GCP, or Azure, and their associated services.
• Basic understanding of authentication protocols such as SAML, OIDC, and related security standards.

What You'll Do

As a Principal Engineer, you will apply your vision and drive to create some market leading technology. We have a phenomenal team working in an open, collaborative environment that makes taxes and compliance less taxing to deal with. It will be up to you to convert product vision and requirements into the finished product. Avalara is a global company with dev teams across multiple locations in the world. Despite our size, we maintain a start-up culture focused on building great software and having the maximum impact on the world that we can have and having fun while doing it. You will report to Sr. Director of Engineering.

What Your Responsibilities Will Be

• Automation vs People Power: Computers are great for process automation but there is a limit to what it can do, and you know where that limit is. You will solve the unique challenges that occur at the intersection of software and people-driven tasks and apply these solutions to the novel business automation that Avalara aims to create.
• Industry Leadership: Avalara is the market leader, and we intend on staying that way. That means we cannot be complacent. We encourage everyone to make >
• Collaborate with teams to align integration efforts with product and team goals.
• Lead, mentor, and inspire multiple teams, providing guidance on best practices, architecture, and development methodologies.
• Foster a culture of innovation, collaboration, and accountability within the engineering teams.
• Ensure seamless data flow and real-time synchronization between systems, minimizing latency and ensuring data integrity for an ever-growing client-base and increasing data volumes.
• Guide the design of high-quality, scalable, and maintainable integration solutions.
• Oversee the full software development lifecycle, from requirements gathering and design to implementation, testing, deployment, and post-release support.
• Build POCs to demonstrate the technical solution feasibility.
• Focus on security aspects, observability, scalability, and telemetry.
• Perform code reviews and ensure coding standards are followed.
• Implement Agile/scrum processes.

What You'll Need to be Successful

Bachelor/master's degree in computer science or equivalent

• 15+ years of full stack experience in software design.
• Experience with Object-oriented programming languages, APIs, data models, and authentication mechanisms.
• Good experience with RESTful APIs, JSON, XML, and other data interchange formats.
• Familiarity with authentication protocols like OAuth and token-based authentication.
• Experience working in an Agile team with hands-on with TDD, BDD
• Experience working on AWS Cloud and DevOps (Terraform, Docker, ECS) would be beneficial, building scalable, resilient, and observable distributed systems
• Experience delivering high-quality software projects.
• Proficiency in CI/CD tools (Jenkins, GitLab, etc.).

Date Posted:
Country:
India

Location:
North Gate Business Park Sy.No 2/1, and Sy.No 2/2, KIAL Road, Venkatala Village, Chowdeshwari Layout, Yelahanka, Bangalore, Karnataka

Position Role Type:
Unspecified

Collins Aerospace is looking for
Principal Systems Engineer(P4)
to work on systems development/verification for Traffic Surveillance products. The team has responsibilities for the product life-cycle activities from Systems and Software Verification. This team works closely with product development groups that specialize Surveillance Systems.

Primary Responsibilities:

• Elicitation of System Level Requirements and breakdown from customer requirements to high/low level requirements
• Technically lead a team of Systems engineers working on the complex systems in the field of Traffic Surveillance products
• Verify Avionics DAL B products in CNS Domain
• Develop common supporting tools necessary for the development/Verification.
• Develop integration and verification strategies for avionic functions and products, create test plans, test case and procedure, execute system verification and create test reports.
• Supporting certification and producing system level artifacts against industry guidelines/recommendations
• You will get to work with architects and senior developers to create scalable, extensible, and sustainable solutions.
• Support Drive strategic roadmap and Drive organizational development initiatives: Talent Management; Performance Management;

Key Skills Required:

• Solid understanding of the systems development lifecycle (SDLC) and its implementation in complex avionics systems .
• Strong proficiency with systems requirements capture from industry and internal product line source requirements using Jama.
• Experience with MOPS
• Ability to develop and interpret system architectures, block diagrams, interface control documents (ICDs), and system designs.
• Working knowledge of avionics protocols (AFDX, ARINC 429, ARINC 615/615A, Ethernet).
• Familiarity with aerospace systems and safety guidelines ARP4754A/B and ARP4761.
• Certification experience (Interfacing with internal Cert office, customer cert offices, or FAA directly).
• Experience with Agile development and Atlassian Suite tools, including JIRA for backlog management and Confluence for documentation.

Preferred Skills:

• Working experience or knowledge of Traffic product functions Transponder, TCAS, ADS-B In and Out and Traffic applications.
• Experience supporting SOI audits and certification, including preparing compliance evidence.
• Familiarity with aerospace systems guidelines RTCA DO-178, DO-160, DO-254 and DO-297.
• Experience in systems integration testing

Basis Qualifications:

• B.Tech/M.Tech with Understanding of Avionics Systems – CNS, FMS, FCS or Displays.
• Strong proficiency in Python with independent developer experience.
• Solid background in Systems Development Lifecycle (SDLC): (requirements, design, implementation, Validation and Verification with exposure to ARP4754A/B.
• Experience with hardware–systems integration.
• Hands-on with tools: DOORS, Jama, Subversion, RapiTest, Git.
• 10+ Years of Avionics Experience
• Experience working on Agile Methodology

Leadership Competencies:

• Analysis - Demonstrates the ability to provide a logical, in-depth analysis of a problem or situation.
• Cooperation - Takes personal initiative to proactively serve as team motivator creating strong morale and synergy.
• Delegating and directing - Incorporates new ideas and suggestions when a project needs to move in a different direction.
• Dependability - Ensures that all details of a project are accurate before delegating to others.
• Detail Orientation - Consistently produces quality results while striving to work to the best of one's ability.
• Judgment - Able to make quick and well-informed decisions, even under high pressure situations.

About Collins Aerospace:
Collins Aerospace, a Raytheon Technologies company, is a leader in technologically advanced and intelligent solutions for the global aerospace and defense industry. Collins Aerospace has the capabilities, comprehensive portfolio, and expertise to solve customers' toughest challenges and to meet the demands of a rapidly evolving global market.

Our Avionics team advances aviation electronics and information management solutions for commercial and military customers across the world. That means we're helping passengers reach their destination safely. We're connecting aircraft operators, airports, rail and critical infrastructure with intelligent data service solutions that keep passengers, flight crews and militaries connected and informed. And we're providing industry-leading fire protection and safety systems that our customers can count on when it matters most. Are you ready to learn from the most knowledgeable experts in the industry, develop the technologies of tomorrow and reach new heights in your career? Join our Avionics team today.

We make modern flight possible for millions of travelers and our military every second. Our major product lines are on-board virtually every aircraft flying. Be it keeping passengers safe with our emergency power generation systems or creating a positive in-flight experience through reliable cabin pressure controls and quieter engines, Power & Controls focuses on delivering a best-in-class experience to our customers. We hire the top people in the industry. Their ideas drive our performance, and their integrity keeps our customers happy. Join us as we take flight

WE ARE REDEFINING AEROSPACE.
Some of our competitive benefits package includes:

• Group Term Life Insurance.
• Group Health Insurance.
• Group Personal Accident Insurance.
• Entitled for 18 days of vacation and 12 days of contingency leave annually.
• Employee scholar program.
• Work life balance.
• Car lease program.
• National Pension Scheme
• LTA
• Fuel & Maintenance /Driver wages
• Meal vouchers
• And more

Nothing matters more to Collins Aerospace than our strong ethical and safety commitments. As such, all India. positions require a background check, which may include a drug screen.

Note:

• Background check and drug screen required.

At Collins, the paths we pave together lead to limitless possibility. And the bonds we form – with our customers and with each other -- propel us all higher, again and again.

Apply now and be part of the team that's redefining aerospace, every day.

RTX adheres to the principles of equal employment. All qualified applications will be given careful consideration without regard to ethnicity, color, religion, gender, sexual orientation or identity, national origin, age, disability, protected veteran status or any other characteristic protected by law.
Privacy Policy and Terms:
Click on this link to read the Policy and Terms

Company Description

About Enterprise Capabilities

Fundamental to our
Think and Act Globally
strategy and digital adoption, Enterprise Capabilities (EC) is AECOM's primary vehicle for workshare. Operating across geographic boundaries and time-zones, EC partners with regional and Global Business Line project teams to provide technical expertise, accelerate delivery and keep AECOM competitive in the industry.

With a team of over 3000 technical professionals located across nine countries and remote technical anchors, EC teams are trusted to deliver high-quality, specialist services that help to fill capability gaps, resourcing needs and technical constraints on projects of all scopes and sizes.

Start here. Grow here.

Job Description

We are seeking a Principal Engineer(Primary Substation) to join our Transmission & Distribution team in India. This is an exciting opportunity for a motivated engineer to contribute to impactful Energy projects across global offices and continue developing their technical expertise in a supportive, high-performing team.

• Senior technical resource may serve as technical advisor for team
• Provides specialized technical input to studies and design for staff's specific area of expertise.
• Develops study and design procedures to facilitate high quality cost effective work by others.
• Participates in interdisciplinary review of project deliverables.
• Develops construction cost estimates and estimates of technical efforts for projects.
• Uses expertise in all steps of completing discipline component of PS&E package.
• Performs quality control review of design calculations or drawings.
• Prepares technical specification sections.
• Provides input to the development of engineering budget and schedule to meet requirements.

Qualifications

The successful candidate will have the following Qualifications:

• 12+ years of work experience is preferred.
• Prior experience in leading large design engineering teams performing Grid Substation design in a global consultancy firm is preferred.
• Experience on HV Plant Design for large EHV Grid Substations is mandatory.
• Previous experience in design teams working for Grid Utilities (for e.g., National Grid, Transgrid, Powergrid etc.,) is highly desirable
• Expsoure to International standards (IEC, IEEE, ANSI, Australian Standards and Middle East region codes and standards) is preferred
• Previous design experience working with GIS and AIS EHV substation HV Plant Primary design is preferable
• Chartership or Fellowship with IET or equivalent is highly preferable
• Very good communication skills (Oral and Written) in English language is mandatory

Additional Information

At AECOM, our Freedom to Grow philosophy supports flexibility and balance to help our people thrive. As part of this approach, we ask all hybrid employees to work from an AECOM office at least three days per week.

About AECOM

AECOM is proud to offer comprehensive benefits to meet the diverse needs of our employees. Depending on your employment status, AECOM benefits may include medical, dental, vision, life, AD&D, disability benefits, paid time off, leaves of absences, voluntary benefits, perks, flexible work options, well-being resources, employee assistance program, business travel insurance, service recognition awards, retirement savings plan, and employee stock purchase plan.

AECOM is the global infrastructure leader, committed to delivering a better world. As a trusted professional services firm powered by deep technical abilities, we solve our clients' complex challenges in water, environment, energy, transportation and buildings. Our teams partner with public- and private-sector clients to create innovative, sustainable and resilient solutions throughout the project lifecycle – from advisory, planning, design and engineering to program and construction management. AECOM is a Fortune 500 firm that had revenue of $16.1 billion in fiscal year 2024. Learn more at

What makes AECOM a great place to work

You will be part of a global team that champions your growth and career ambitions. Work on groundbreaking projects - both in your local community and on a global scale - that are transforming our industry and shaping the future. With cutting-edge technology and a network of experts, you'll have the resources to make a real impact. Our award-winning training and development programs are designed to expand your technical expertise and leadership skills, helping you build the career you've always envisioned. Here, you'll find a welcoming workplace built on respect, collaboration and community - where you have the freedom to grow in a world of opportunity.

As an Equal Opportunity Employer, we believe in your potential and are here to help you achieve it. All your information will be kept confidential according to EEO guidelines.

ReqID:
J

Business Line:
Energy

Business Group:
DCS

Strategic Business Unit:
Enterprise Capabilities

Career Area:
Engineering

Work Location Model:
Hybrid

This role is for one of the Weekday's clientsMin Experience: 14 years

Location: Bangalore

JobType: full-time

• 14+ years of experience in architecting and scaling real-time/near real-time data systems.

• Lead the design and development of large-scale, distributed systems with a focus on performance, scalability, and reliability.
• Solve complex technical challenges with strong analytical and problem-solving skills, simplifying and communicating solutions effectively.
• Drive concurrency and performance optimization strategies across systems.
• Utilize proficiency in Golang, Java, or similar languages to build high-performance applications.
• Implement and optimize gRPC streaming, serialization formats (Protobuf, Avro), and distributed security models (TLS, authentication, authorization).
• Architect solutions leveraging distributed object storage systems (S3, GCS) and data formats (Parquet, Iceberg), ensuring optimization for large-scale environments.
• Design and manage cloud-native data infrastructure using AWS, GCP, or other modern cloud platforms.
• Collaborate with global engineering teams, providing technical leadership, guidance, and alignment across stakeholders.
• Contribute to CI/CD pipelines, ensuring seamless integration, deployment, and system reliability.

• Golang, Java
• gRPC & Serialization (Protobuf, Avro)
• Cloud-Native Development (AWS, GCP)
• Distributed Object Storage (S3, GCS)
• Data Formats (Parquet, Iceberg)
• CI/CD
• Scalable Distributed Systems
• Performance Optimization & Concurrency

The CoinDCX Journey: Building Tomorrow, Today
At CoinDCX, we believe 'CHANGE STARTS TOGETHER'. You are the driving force that will help us make Web3 accessible to all.

In the last six years, we have skyrocketed from being India's first crypto unicorn to carrying a community of over 125 million with us. To continue maximising the adoption and acceleration of Web3, we are now focused on developing cutting-edge products, addressing accessibility and security challenges, and bridging the gap between people and Web3 technologies.

While we go ahead and keep dominating the Web3 world, we would like to HODL you on our team Join our team of passionate innovators who are breaking barriers and building the future of Web3. Together, we will make the complex simple, the inaccessible accessible, and the impossible possible. Boost your innovation to an ALL TIME HIGH with us

Inside CoinDCX's Engineering Team
Our Engineering team is the driving force behind CoinDCX's innovative products and platforms. We tackle complex challenges to build scalable, secure, and high-performing solutions that power the future of digital finance. If you're an engineer who loves pushing boundaries and solving tough problems, join us in building the technology that will define the future of Web3.

You need to be a HODLer of these

• 14+years of experience in software designing and development.
• Highly analytical, innovative, and able to think strategically to develop comprehensive detailed specifications.
• Deep experience writing high-quality code in Golang
• Ability to write well-tested, thoughtful, and concise code and improve code quality standards within the organization.
• Operational proficiency, including optimizing, deploying, and tuning servers (e.g., using EKS and Docker).
• Experience working with SQL/NoSQL databases like Postgresql, MySql, Mongo or Cassandra and Messaging queues like Kafka/SQS or RabbitMq.
• Proficient in making architectural and design choices, possessing extensive knowledge of tech stacks and the ability to identify alternative tech options and trade-offs.
• Experience and/or willingness to work in high-functioning agile teams in a growth-oriented environment.
• Ability to communicate clearly and concisely on complex technical, architectural, and/or organizational problems and suggest robust iterative solutions.
• Good to have previous exposure to Agile methodologies (XP, Scrum), TDD, and CI/CD is advantageous.

You will be mining through these tasks

• Actively participate in code reviews, design reviews, and architecture discussions to ensure high-quality software development within the team.
• Take ownership of Scaling, Performance, and Quality aspects of the team's deliverables.
• Establish and champion best practices to optimize team efficiency, focusing on scalability, performance, and code quality.
• Drive the adoption of coding, design, quality, and performance best practices throughout the team.
• Experiment with emerging technologies and tools, leading their adoption and measuring impact on team performance.
• Implement and execute the long-term technology vision for the team, aligning it with business requirements.
• Assume responsibility for the architecture of the product, ensuring alignment with project requirements and team objectives.
• Play an active role in technology forums, representing the company in external discussions.
• Develop robust architectures and designs for innovative solutions addressing both existing and new problem spaces.
• Guide technology and tool choices for the team, taking accountability for their implementation and success.
• Coach/mentor and incubate junior engineers to grow them into technical leaders.
• Foster a culture of open and intentional communication and collaboration between engineering teams.

Are you the one? Our missing block

• You are knowledge-hungry when it comes to VDA and Web3, always eager to dive deeper and stay ahead in this evolving space.
• The world of Web3 and VDA excites you, fueling your curiosity and driving you to explore new opportunities within this dynamic landscape.
• You act like an owner, constantly striving for excellence, impact, and tangible results in everything you do.
• You embrace a 'We over Me' mindset, growing individually while fostering the growth of those around you.
• Change is your catalyst, igniting your passion to build and innovate.
• You think outside the box, unbound by limitations or doubt, always pushing the boundaries of what's possible.

Perks That Empower You
Our benefits are designed to make a lasting impact on your life, giving you the freedom to create a work-life balance that truly suits you.

• Design Your Own Benefit: Tailor your perk package to fit your unique needs. Whether you're eyeing a new gadget or welcoming a furry friend into your life, our flexible benefits ensure that you can prioritize what matters most to you.
• Unlimited Wellness Leaves: We believe in the power of well-being. Take the time you need to recharge, knowing that your health is our priority. With unlimited wellness leaves, you can return refreshed, ready to build and grow.
• Mental Wellness Support: Your mental health is as important as your professional growth. Benefit from access to health experts, free counselling sessions, monthly wellness workshops, and regular team outings, all designed to help you stay balanced and connected.
• Bi-Weekly Learning Sessions: These sessions are more than just updates—they're opportunities to fuel your growth. Stay ahead with the latest industry knowledge, sharpen your skills, and accelerate your career in an ever-evolving landscape.

Exp 8+ yearsto 15 Years

Notice Period: Immediate Joiner

Strong working experience in .NET web application development.
• Strong working experience with architecture and development in C#, ASP.NET MVC, .NET Core, Web API, and RESTful services.