
About Walmart labs
About
WalmartLabs is an American privately held company in Mountain View, California. We help people around the world save money and live better – anytime and anywhere – in retail stores, online, and through their mobile devices. @WalmartLabs has three development centers worldwide: USA, Brazil and India.
The Global Data and Analytics Platforms (GDAP) team @ Walmart Labs in Bangalore provides Data Foundation Infrastructure, Visualization Portal, Machine Learning Platform, Customer platform and Data Science products that form part of core platforms and services that drive Walmart business. The group also develops analytical products for several verticals like supply chain, pricing, customer, HR etc.
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Job Title : Lead Java Developer (Backend)
Experience Required : 8 to 15 Years
Open Positions : 5
Location : Any major metro city (Bengaluru, Pune, Chennai, Kolkata, Hyderabad)
Work Mode : Open to Remote / Hybrid / Onsite
Notice Period : Immediate Joiner/30 Days or Less
About the Role :
- We are looking for experienced Lead Java Developers who bring not only strong backend development skills but also a product-oriented mindset and leadership capability.
- This is an opportunity to be part of high-impact digital transformation initiatives that go beyond writing code—you’ll help shape future-ready platforms and drive meaningful change.
- This role is embedded within a forward-thinking digital engineering team that thrives on co-innovation, lean delivery, and end-to-end ownership of platforms and products.
Key Responsibilities :
- Design, develop, and implement scalable backend systems using Java and Spring Boot.
- Collaborate with product managers, designers, and engineers to build intuitive and reliable digital products.
- Advocate and implement engineering best practices : SOLID principles, OOP, clean code, CI/CD, TDD/BDD.
- Lead Agile-based development cycles with a focus on speed, quality, and customer outcomes.
- Guide and mentor team members, fostering technical excellence and ownership.
- Utilize cloud platforms and DevOps tools to ensure performance and reliability of applications.
What We’re Looking For :
- Proven experience in Java backend development (Spring Boot, Microservices).
- 8+ Years of hands-on engineering experience with at least 2+ years in a Lead role.
- Familiarity with cloud platforms such as AWS, Azure, or GCP.
- Good understanding of containerization and orchestration tools like Docker and Kubernetes.
- Exposure to DevOps and Infrastructure as Code practices.
- Strong problem-solving skills and the ability to design solutions from first principles.
- Prior experience in product-based or startup environments is a big plus.
Ideal Candidate Profile :
- A tech enthusiast with a passion for clean code and scalable architecture.
- Someone who thrives in collaborative, transparent, and feedback-driven environments.
- A leader who takes ownership beyond individual deliverables to drive overall team and project success.
Interview Process
- Initial Technical Screening (via platform partner)
- Technical Interview with Engineering Team
- Client-facing Final Round
Additional Info :
- Targeting profiles from product/startup backgrounds.
- Strong preference for candidates with under 1 month of notice period.
- Interviews will be fast-tracked for qualified profiles.


We’re looking for full-stack software engineers who are passionate about both technical excellence and team development. This position is based in our Hyderabad office, where you can contribute towards developing secure and scalable software products.
What You’ll Do:
● As a Full Stack Principal Software Engineer you will build scalable applications, lead technical strategy, and mentor teams while working with modern front-end and back-end technologies.
● Architect & Develop: Design and implement scalable, high-performance software solutions.
● Full Stack Development: Build and maintain front-end applications using modern frameworks (React, Angular,
Vue.js) and back-end services using Java, Spring Boot, and cloud-native technologies.
● Technical Leadership: Provide technical guidance, conduct code reviews, and mentor engineers to improve
software quality and performance.
● Scalability & Security: Ensure software solutions adhere to best practices for security, scalability, and performance.
● Cloud & DevOps: Deploy and manage applications on cloud platforms (AWS, Azure, GCP) using Kubernetes,
Docker, and CI/CD pipelines.
● Collaboration: Work cross-functionally with product managers, UX designers, and other engineers to deliver
customer centric solutions.
What You’ll Need
● 10+ years of experience in full-stack development with expertise in Java, Spring Boot, and modern front-end
frameworks.
● Strong experience with microservices architecture and cloud-based development.
● Deep knowledge of front-end technologies such as React.js, Angular, TypeScript, JavaScript, HTML, CSS.
● Experience with database technologies like PostgreSQL, MySQL, MongoDB.
● Hands-on experience with Docker, Kubernetes, CI/CD tools (Jenkins, GitHub Actions, ArgoCD, etc.).
● Strong understanding of API design, GraphQL/REST, and authentication protocols (OAuth, JWT, SAML).
● Experience leading development teams, mentoring engineers, and driving technical decisions.
● Excellent problem-solving skills and ability to work in an agile, fast-paced environment
Good to have:
● Knowledge of DevSecOps practices and software security best practices.
● Familiarity with serverless computing (AWS Lambda, Azure Functions).
● Contributions to open-source projects or active participation in the software development community
Why Join Us?
● Help secure the software supply chain for millions of developers worldwide.
● Build meaningful software in a collaborative, fast-moving environment with strong technical peers.
● Stay hands-on while leading—technical leadership is part of the job, not separate from it.
● Join a global engineering organization with deep local roots and a strong team culture.
● Competitive salary, great benefits, and opportunities for growth and innovation.
If you're excited about building impactful software and helping others do the same,
Key roles:
· Develop backend application with clean code practices foe the application
· Collaborate with frontend developers to integrate user-facing elements with server side logic
· Troubleshoot and debug application
· Gather and address technical and design requirements
· Build reusable code and libraries for future user-facing
· Communicate with other third-party team for collaborations
Skillset:
· Core Java - Hands on experience with Jdk 11 and above
· Experience with code hosting and collaboration tools like Bitbucket/Github/GitLab
· Microservice architecture - Rest API calls, inter-service exception handling
· Non-relational DB - MongoDB basic DB commands to insert, update, delete, find records and Indexing
· Springboot framework - Spring Data JPA, ORM
· Event driven architecture - Kafka
· Tools like Postman, Jenkins, Doppler, IDE, MongoDB atlas
Qualifications:
· UG: B.Tech/B.E. in Any Specialization, B.Sc in Any Specialization, BCA in Any Specialization
· PG: Any Postgraduate
● Execute these via designs and high quality implementations in Java and/or Python.
● Work with frontend engineer to clearly demarcate division of responsibilities via REST based interfaces.
● Focus on solutions that deliver non functional requirements around performance, scalability, security, high availability, monitorability, debuggability and other such concerns.
● Evaluate new technologies and build prototypes for continuous improvements
● Very strong real world experience on Java, Springboot, Microservices.
● Advocate best practices and standards
- 3+ years of professional software development experience
- 3+ years of object-orientedJava/ J2EE development
- Full SDLC experience (requirements gathering, architecture, development, QA, etc…)
- Experience with Spring (MVC, IOP/DI, REST, Security) & Hibernate/Spring
- Experience with SOAP / REST web services
- Knowledge of SQL
- Knowledge of No SQL concepts, understanding of Solr, Redis and Mongo DB is desirable
- Understanding concepts of CDN & Content Management
- Must have worked on any one messaging solutions
- Bonus Points for micro service design and development experience
- Bonus points for any mobile development experience
- Used Agile methodology
- Experience leading or working with cross geography teams
- Bonus Points for experience working on Unix, shell scripting & Build Systems
- Experience in performance optimization is an added advantage
POSITION
- You will be actively involved during the entire technology development lifecycle. Responsibilities will include all aspects from design, coding, testing, customer feedback cycle changes and support.
- Primary role in software development with object-orientedJava
- The customized solutions that you will be architecting and developing will also require knowledge and experience with spring / Hibernate, SOAP / REST, and SQL.
- Ability to learn new technologies quickly and willingness to read and digest large existing source code and take ownership on complex component or subsystem to drive improvements and re-architecture
- Work with a team of amazing developers and designers involved in the design and development of global platforms
- Invent and prototype new features, build, test and ship them to customers as SaaS, cloud based or hosted product platforms
- Drive the implementation of new technologies which improve our ability to build great customers products.
- Participate in a fun, open learning environment with great benefits and smart talented folks that represent among the best globally.
QUALIFICATION
- A Bachelor’s degree in Computer Science (or equivalent experience)
- M-Tech or advanced degree a plus
- Hackathon participation and accolades are a plus



THE POSITION:
- 3+ years of relevant experience in designing & implementing scalable, resilient backend microservices
- Expert at any backend programming language (Python/GoLang preferrable) and has exposure to API design and scalable architecture
- Hands-on experience on a couple of RDBMS/NoSQL/In-memory DBs
- Great database modelling skills
- Ability to choose the right algorithm, data-structure, and design pattern for the given problem statement
- Knowledge of any cloud based platform like AWS or GCP and scaling on the go
- Understanding of various application security principles and experience with building applications secure by design
QUALIFICATION:
- We don't care about which college you are from, if you have the power to convert coffee into code, we got you.
- Working with Databases and Linux platform
- Understanding algorithms, databases and their space and time complexities
- Writing unit and integration tests with reasonable coverage of code and interfaces
- Solving complex and interesting problems
- Taking up a high level of ownership and commitment towards the business and product vision
What you need to have:
- Minimum 1-year experience
- Strong problem-solving skills
- Good understanding of data structures & algorithms and their space & time complexities
- Strong hands-on and practical working experience with at least one programming language: C/Java/C++/C#
- Excellent coding skills – should be able to convert the design into code fluently
- Strong technical aptitude and a good knowledge of CS fundamentals
- Hands-on experience working with Databases and Linux platform is a plus
- B-Tech in Computer Science or equivalent from a reputed college
- Good experience in at least one general programming language (Java, Ruby, Clojure, Scala, C/C++, Python and SQL)
- A solid foundation in computer science, with strong competencies in data structures, algorithms, and software design.
- Have a penchant for solving complex and interesting problems, Worked in startup like environment with high levels of ownership and commitment
- Excellent coding skills – should be able to convert design into code fluently
- Good skills to write unit & integration tests with reasonable coverage of code & interfaces
- TDD is a plus
Job Title: Senior Java Developer
Department: Technology and Research
Reports to: Technical Lead
Context
Sampana Digital (SDPL) (http://www.sampanadigital.com">www.sampanadigital.com) is a digital technology company that provides end-to-end product engineering and digital transformation services. Our engineering services includes web & mobile application development, user experience design, cloud, testing and infrastructure managed services to transform businesses digitally. We also enable enterprises with contextual and personalized two-way multi-channel mobile communications, including SMS, voice, email and PWA technology.
We believe in small teams of smart, committed, and diverse individuals coming together and form a breakthrough insight. We are a team of passionate professionals to craft an unbeatable culture and services.
Come and join us!
Role Description
We are looking for a Senior Java Developer with experience in building high-performing, scalable, enterprise-grade applications.
You will be part of a talented software team that works on mission-critical applications, and your roles and responsibilities include managing Java/Java EE application development while providing expertise in the full software development lifecycle, from concept and design to testing.
Job Responsibilities:
- Work with and direct the team’s software engineers in setting the standards for coding, testing and software quality
- Collaborate closely with the team’s BAs on the efficient transition of BDD’s and Swaggers to the engineers as part of the overall workflow.
- Oversee and manage the scope, timeline, and goals forth delivery of working software
- Oversee and assist in the production of comprehensive documentation
- Oversee and provide support to production cutovers and migrations as required
- Lead the analysis and resolution of technical and application problems
- Supporting the Scrum Master
- Participate in and support backlog grooming, sprint planning, daily stand-ups, reviews, retrospectives, release planning, demos and other Scrum related meetings
- Provide clear reporting on the status of the scope, timeline and progress for the delivery of working software
- Assist in setting up a robust out of hours support process
- Assist in the prioritisation of bugs and defects
- Providing Guidance and Mentoring
- Participate in peer reviews of solution designs and related code
- Provide technical leadership to the teams’ software engineers through coaching and mentorship
- Identify and encourage areas for growth, education and development within the team
General
- Self-Starting Leader capable or working under pressure
- Curious and engaged in Continuous Learning and Professional Development
- Strong DevOps experience
- Java and Spring Developer with +5 years’ experience with the following skills
- Java 1.8+
- Spring
- Microservices with Spring-boot
- Spring cloud config
- Unit tests with Spring-boot
- Docker
- Openshift/Kubernetes
- Basic understanding of API gateways
- OpenAPI (Swagger) specification.
Understanding of basic networking concepts
- Integration into backends via various protocols (SOAP,REST, XML-RPC etc)
- CI/CD (Jenkins, pipelines etc)
The following additional skills would be advantageous:
- Spring reactive
- APIGEE
- Azure DevOps
- Pivotal Kubernetes
- Linux
- Azure Pipelines

- Translation of complex functional requirements into technical requirements
- Design, develop and maintain complex systems using best of the breed development practices and technology.
- Responsible for the overall software development life cycle.
- Delivery of High Quality & Scalable systems and applications with a sharp focus on timelines.
- Being on the lookout for bettering the software engineering practices and tools within the organization
- Collaboration with other stakeholders to provide robust and well-rounded solutions
- Report on the status of product delivery and quality to management, customer support and product teams.
- Experience of 5+ years in designing & developing highly scalable, performant web applications
- Strong programming, debugging, and problem-solving skills
- Strong Computer Science Fundamentals (Data structures and Algorithms)
- Sound understanding of object-oriented programming and excellent software design skills.
- Good experience of Restful services using Java Springboot
- Strong understanding of database design and SQL (PostgreSQL / MySQL) development
- Good to have knowledge of NoSQL technologies like Redis, MongoDB, Cassandra or any other NoSQL database
- Knowledge of design patterns and good to have experience of large-scale applications
- Should have experience in Apache Kafka, RabbitMQ, SQS or other Queueing systems.
- Experience of working with Amazon Web Services (AWS), Google Cloud Computing (GCP) would be considered as an advantage
- Experience of developing with Serverless Model will be an advantage.
- 2+ years of experience in Java Development with sound knowledge of core Java
- Should have strong hands on experience with developing web applications using Servlets and JSP, Spring, Hibernate, Web Services, HTML, JavaScript
- Should have experience of working on Tomcat/Glassfish
- Experience of Google App Engine or AWS will be added advantage
- Strong knowledge of OOAD
- Comfortable working on Linux/Unix
- Good communication skills and good organization
- Willingness to work in a team environment, as well as
- Willingness to learn new
Responsibilities:
- Write production quality code in Java, J2EE, and Spring
- Adhere to software development and source control processes, git is added Advantage
- Design, build, configure, test, and document production quality software on an iterative
- Participate in design and implementation of new software.
- Work closely with users, technical leads, project managers, and other cross-functional development
- Execute on the provided design. Active coding in key technologies is required for this development position and includes: Java/J2EE, Tomcat, Web Services, REST, and spring, Hibernate/Ibatis, XML, UNIX and
- As part of the software development process you will need to create, review, and maintain all required technical documentation related to assigned software to ensure supportability and reuse.
- This individual must develop software using disciplined software development processes, adhering to team/company standards and software best practice guidelines, and corporate policies.

