562 Java jobs in Lucknow

Tech Stack

Backend & Infra: Java (Spring Boot), Microservices, AWS ECS, Redis, ScyllaDB, MongoDB, GraphQL, AWS, Lambda, SQS

Data & AI: Databricks, Spark, Kinesis, Claude, Cursor, LangChain

Observability: Prometheus, Grafana, CloudWatch

Role: Senior Backend Engineer (Java / Microservices)

We’re hiring an experienced backend engineer (4-10 years of experience) to help build scalable, real-time systems at the core of our global marketplace.

Responsibilities:  

● Build and scale microservices with low-latency design & high-throughput for real-time hotel search and distribution.

● Implement custom algorithms and data models to support pricing, availability, and inventory workflows.

● Own end-to-end modules from design to rollout and collaborate with product/architect teams

● Use AI developer tools ( Claude, Cursor ) and LLMs via prompts, RAG, and agents to accelerate development.

● Participate in rigorous code reviews & contribute to a CI/CD pipeline that supports frequent, reliable, and automated deployments.

Requirements:

● 4+ years of hands-on experience in Java, Spring Boot, and Hibernate.

● Strong experience with MySQL , MongoDB , or ScyllaDB .

● Built distributed, event-driven systems using SQS , Kinesis ; solid understanding of fault tolerance , backpressure , and scalability .

● Familiarity with data consistency models, circuit breakers, internal DSLs , and low-latency API design.

● Proficient with Grafana , Prometheus , CloudWatch ; have tuned systems for high throughput and sub-50ms latencies .

● Comfortable working in a remote-first team with a culture of ownership, documentation, and async communication.

● Passion for clean code, testability, and driving engineering excellence via automation and tooling.

Nice to Have:

● Hands-on with LLM pipelines or agentic workflows

● Exposure to React or full-stack systems

● Experience with Spark or Databricks

● AI/ML Exposure

Why Join Us?

● Build critical infrastructure for a global hotel marketplace

● Work with high-scale, low-latency systems

● Use AI tools in daily development

● Fully remote team with strong ownership culture 

About the Role:

-Understand complex business requirements, partnering with global stakeholders and product team, and offering solutions, all the way from design to implementation, and rollout

-Code, test and implement high-quality Java modules for a complex enterprise application system, that is integrated to multiple 3rd party webservices and also supports a react.js front end

-Modify existing software to fix errors, improve its performance, or troubleshoot, debug and upgrade existing software.

-Coordinate across multiple stakeholders including tech, Ops, business, BA partners, QA globally

-Ensure that design and implementation works against high-volume data sources, is scalable and fault-tolerant.

Minimum Qualifications:

-Candidate should have development experience for at least 4+ years, in Web technologies, and should be proficient in the following:

-Core Java / J2EE

-Spring boot, Hibernate or similar ORM framework

-HTML/JavaScript preferably with exposure to some JavaScript framework such as React

-Strong Database skills preferably with MySQL

-Expert knowledge in architecting, building and management of microservices

-Knowledge of SQS and Kinesis

-Unix scripting

-Ability to learn new languages and technologies.

-Good communication skills with an ability to clearly articulate asks and provide status

-Ability to pick up and assimilate system knowledge and provide input on automation or process improvement

-Ability to triage and support production issues as require

Required Skills & Experience:

• 5+ years of hands-on experience with Java development (Spring Framework, Spring Boot, JPA/Hibernate).
• 1+ year of experience in Python (scripting, API development, or data-related work).
• Strong understanding of object-oriented programming and design patterns .
• Experience with RESTful APIs , microservices architecture , and database technologies (MySQL, PostgreSQL, or MongoDB).
• Familiarity with Git , CI/CD pipelines , and cloud platforms (AWS/Azure/GCP).
• Good understanding of Agile methodologies (Scrum or Kanban).

Job Title: Senior Java Developer / Data Engineer

Experience Required: 8–12 Years

Location: (Insert Location or Remote)

Employment Type: Full-Time

Notice period : only immediate

Job Summary:

We are seeking an experienced and highly skilled Senior Java Developer with strong backend development expertise in Core Java, Spring Boot, and JBoss , complemented by a solid foundation in data engineering tools and technologies including SQL, Python, PySpark, and Power BI . The ideal candidate will also have working knowledge of Linux, Oracle , and SQL Databases .

This is a hybrid role requiring strong software development skills with the ability to work on data integration, analytics, and backend systems . The role demands an analytical mindset, deep understanding of enterprise software architecture, and a proactive approach to problem-solving.

Key Responsibilities:

Primary Responsibilities (Core Skill sets):

• Design, develop, and maintain enterprise-grade backend systems using Core Java and Spring Boot .
• Deploy and manage Java applications on JBoss application server .
• Write clean, scalable, and maintainable code following best practices.
• Collaborate with architects, product managers, and other developers to deliver high-quality solutions.
• Conduct code reviews, unit testing, and performance tuning of applications.

Secondary Responsibilities:

• Design and optimize complex SQL queries and stored procedures to support application requirements.
• Develop and maintain Power BI dashboards and reports for business users.
• Build and maintain data pipelines using Python and PySpark in distributed environments.
• Perform data cleansing, transformation, and integration from various sources.

Preferred Skills:

• Work in Linux environments for scripting, deployment, and server maintenance.
• Utilize Oracle and SQL Server databases for application and data storage.
• Monitor and troubleshoot system issues, ensuring high availability and performance.

Required Skills & Qualifications:

Must Have (Core Skillsets):

• 8–12 years of strong hands-on experience in Core Java (collections, multithreading, memory management) .
• Proficient in Spring Boot framework for RESTful API development.
• Experience with JBoss/WildFly for application deployment and configuration.

Good to Have (Secondary Skillsets):

• Strong in SQL and experience with relational databases (Oracle, SQL Server).
• Working knowledge of Power BI for data visualization and reporting.
• Proficient in Python and PySpark for data processing and ETL tasks.

Preferred:

• Familiarity with Linux shell scripting and server-side operations.
• Experience working with Oracle databases , including performance tuning and query optimization.
• Understanding of DevOps pipelines , CI/CD, and automated testing is a plus.

Soft Skills:

• Strong communication and collaboration abilities.
• Excellent problem-solving and analytical thinking.
• Ability to work independently and within a team environment.
• Strong attention to detail and quality.

Education:

• Bachelor’s or Master’s degree in Computer Science, Information Technology , or related field.

Benefits:

• Competitive salary and performance-based incentives.
• Health insurance and retirement benefits.
• Opportunity to work on cutting-edge enterprise technologies.
• Learning and development programs

Java Software Engineer

Location: Remote

Responsibilities

• Develop and maintain backend microservices using Python, Java and Spring Boot
• Build and integrate APIs (both GraphQL and REST) for scalable service communication
• Deploy and manage services on Google Cloud Platform (GKE)
• Work with Google Cloud Spanner (Postgres dialect) and pub/sub tools like Confluent Kafka (or similar)
• Automate CI/CD pipelines using GitHub Actions and Argo CD
• Design and implement AI-driven microservices
• Collaborate with Data Scientists and MLOps teams to integrate ML Models
• Implement NLP pipelines
• Enable continuous learning and model retraining workflows using Vertex AI or Kubeflow on GCP
• Enable observability and reliability of AI decisions by logging model predictions, confidence scores and fallbacks into data lakes or monitoring tools

Required Qualifications

• 5+ years of backend development experience with Java and Spring Boot
• 2+ years working with APIs (GraphQL and REST) in microservices architectures
• 2+ years’ experience integrating or consuming ML/AI models in production environments (e.g. RESTful ML APIs, TensorFlow Serving or Vertex AI Endpoints)
• Experience working with structured and unstructured data (e.g. Rx Claim metadata, clinical documents, NLP processing).
• Familiarity with ML model lifecycle - from data ingestion, training, deployment, to real-time inference (MLOPS)
• 2+ years hands-on experience with GCP, AWS, or Azure
• 2+ years working with pub/sub tools like Kafka or similar
• 2+ years’ experience with databases (Postgres or similar)
• 2+ years’ experience with CI/CD tools (GitHub Actions, Jenkins, Argo CD, or similar)

Preferred Qualifications

• Hands-on experience with Google Cloud Platform
• Familiarity with Kubernetes concepts; experience deploying services on GKE is a plus
• Strong understanding of microservice best practices and distributed systems
• Familiarity with Vertex AI, Kubeflow or similar AI platforms on GCP for model training and serving
• Understanding of GenAI use cases, LLM prompt engineering and agentic orchestration (e.g. LangChain, transformers)
• Experience deploying Python-based ML Services into Java microservice ecosystems (via REST, gRPC or sidecar patterns)
• Knowledge of claim adjudication, Rx domain logic or healthcare specific workflow automation

Education

Bachelor’s degree or equivalent experience (High School Diploma and 4 years relevant experience)

Job Description :

• The candidate should have hands on experience on developing and working on web applications using Java/ Servlets/J2EE technologies and relevant frameworks. Should be comfortable working with both legacy architecture and microservices
• Should have worked on JSP, JS/Jquery/Backbone/React, latest standards on Responsive UI and implemented in at least 2-3 projects.
• Project experience with enterprise clients will be an added advantage
• Understand the J2EE web application architecture, code re-write of either JSP and/or back end APIs
• Peer review the code, design, test automation, etc.,
• Responsible for leading a high performance team of individuals to provide qualitative quality delivery and support
• Experience in working in onsite and offshore model

Desired Candidate profile :

• 4-7 years of industry experience in Java.
• Solid understanding of object-oriented programming
• Very good experience in front end development (HTML/CSS, JS, JS Libraries – Backbone, Jquery and React)
• Very good experience in JSP / Servlets development
• Very good experience in JSP tag libraries
• Good Experience in Core Java, J2EE and Spring boot
• Good experience in one database like MySql, Oracle etc.
• Good Experience with any Source controls like Git, TFS etc.
• Good Experience in Continous Integration tools like Jenkins/Go
• Should have experience in Junit and Mocking frameworks like JMockit
• Excellent problem-solving and analytical skills
• Should have executed projects using Agile methodologies
• Should be self-motivated and smart-working
• Candidate should have excellent communication skills both oral and written
• Should be willing to learn

Primary Technical Skills :

• Java
• Servlets & JSP
• JSP Tag libraries
• JavaScript or jQuery or Backbone.js
• HTML/CSS, React
• RDBMS ( Oracle or MSSQL or MySQL )
• Ant/Maven/Gradle
• Junit
• JMockit
• Jenkins
• Microservices

Secondary Technical Skills :

• Web services (RESTful & SOAP)
• Apache CXF, Axis, Jersy or any other Webservices framework

Responsibilities :

• Thorough understanding of requirements and business knowledge
• Design, build, and maintain efficient, reusable, and reliable Java code
• Ability to communicate with clients effectively and directly when needed
• Follow industry best practices while coding and unit testing.
• Stay updated with current technologies and coding methodologies.
• Working with the developers to build the interface with a focus on usability features
• Should be a solution provider (provide end-to-end solution)
• Should appreciate the Agile methodology
• Should be competent to manage to work in tight schedules