
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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📍 Position : Java Architect
📅 Experience : 10 to 15 Years
🧑💼 Open Positions : 3+
📍 Work Location : Bangalore, Pune, Chennai
💼 Work Mode : Hybrid
📅 Notice Period : Immediate joiners preferred; up to 1 month maximum
🔧 Core Responsibilities :
- Lead architecture design and development for scalable enterprise-level applications.
- Own and manage all aspects of technical development and delivery.
- Define and enforce best coding practices, architectural guidelines, and development standards.
- Plan and estimate the end-to-end technical scope of projects.
- Conduct code reviews, ensure CI/CD, and implement TDD/BDD methodologies.
- Mentor and lead individual contributors and small development teams.
- Collaborate with cross-functional teams, including DevOps, Product, and QA.
- Engage in high-level and low-level design (HLD/LLD), solutioning, and cloud-native transformations.
🛠️ Required Technical Skills :
- Strong hands-on expertise in Java, Spring Boot, Microservices architecture
- Experience with Kafka or similar messaging/event streaming platforms
- Proficiency in cloud platforms – AWS and Azure (must-have)
- Exposure to frontend technologies (nice-to-have)
- Solid understanding of HLD, system architecture, and design patterns
- Good grasp of DevOps concepts, Docker, Kubernetes, and Infrastructure as Code (IaC)
- Agile/Lean development, Pair Programming, and Continuous Integration practices
- Polyglot mindset is a plus (Scala, Golang, Python, etc.)
🚀 Ideal Candidate Profile :
- Currently working in a product-based environment
- Already functioning as an Architect or Principal Engineer
- Proven track record as an Individual Contributor (IC)
- Strong engineering fundamentals with a passion for scalable software systems
- No compromise on code quality, craftsmanship, and best practices
🧪 Interview Process :
- Round 1: Technical pairing round
- Rounds 2 & 3: Technical rounds with panel (code pairing + architecture)
- Final Round: HR and offer discussion
Responsibilities
- Design, develop, test, and deploy Java-based backend services and APIs.
- Collaborate with front-end developers, DevOps, and QA to deliver high-quality software.
- Write clean, efficient, and maintainable code following best practices.
- Participate in system design, code reviews, and architectural discussions.
- Optimize application performance and scalability.
- Ensure secure and compliant backend services.
- Troubleshoot and debug production issues as part of the on-call rotation.
- Contribute to CI/CD and infrastructure automation efforts.
Job responsibility The Lead Developer contributes, to create a customer’s solution, in the building phase of the software development lifecycle. The Software Engineer is responsible for performing the detailed design of application and technical architecture components and classes in accordance to the specification provided by the Solution Architect, for coding of SW components, and for the early testing phases (component testing), and system testing support
Should have handled and leaded a team of front end and back developer and deliver projects on time.Hands on experience in Java, Python, scripting
- Design, implement, deploy and support web-based applications and web services using server technologies stacks that include Java, MySQL
- Experience in Java/J2EE using web frameworks Play or Spring boot, REST API Development and ORM (JPA, Hibernate eBean etc.)
- In depth knowledge of Design patterns and Data structures
- Databases - MySQL, Oracle, SQL
- Solid understanding of concepts like Web Services, SOA, REST APIs, Message Queue, Caching, Distributed/Scalable Architecture
- Secure application development best practices, such as OWASP
- Document and maintain all design documents and involve in review process.
- Experienced problem solving and debugging skills.
- Good verbal and written communication and interpersonal skills
- Experience in Agile methodology is added advantage
- Knowledge of Cloud Knowledge /Azure
- Must know about Unix knowledge
- experience in Elastic search
Job Title: Backend Developer
Job Description: We are seeking a skilled Backend Developer to join our dynamic team. The ideal candidate will be responsible for designing, implementing, and maintaining the server-side logic, databases, and APIs of our applications. Key responsibilities include collaborating with cross-functional teams to develop scalable and efficient backend systems, troubleshooting and resolving issues, and staying updated on industry trends. Proficiency in programming languages such as Python, Java, or Node.js, along with experience in database management and API development, are essential for success in this role. Strong problem-solving skills, attention to detail, and a passion for creating robust and high-performance backend solutions are highly valued.
Requirements:
Proficiency in one or more backend programming languages (e.g., Python, Java, Node.js)
Experience with database management systems (e.g., MySQL, PostgreSQL, MongoDB)
Knowledge of RESTful API design and development
Familiarity with cloud services (e.g., AWS, Azure) is a plus
Strong problem-solving and troubleshooting skills
Collaborative mindset with excellent communication skills
Ability to work in a fast-paced and dynamic environment
Job description for Backend Developer:
If interested can forward your resume to (ambikadotjsemperfidotcodotin)
For more details contact 8a3a1a0a8a4a4a6a8a2
• Hands on experience in Springboot and good knowledge of MySQL, MongoDB
• Hands on experience in building RESTful based APIs
• Develop and manage well-functioning databases and applications
• Write effective APIs
• Integration of user-facing elements developed by a front-end developers with server side logic
• Building reusable code and libraries for future use
• Optimization of the application for maximum speed and scalability•
• Implementation of security and data protection
As a Software Development Engineer at Amazon, you have industry-leading technical abilities and demonstrate breadth and depth of knowledge. You build software to deliver business impact, making smart technology choices. You work in a team and drive things forward.
Top Skills
- You write high quality, maintainable, and robust code, often in Java or C++/C/Python/ROR/C#
- You recognize and adopt best practices in software engineering: design, testing, version control, documentation, build, deployment, and operations.
- You have experience building scalable software systems that are high-performance, highly-available, highly transactional, low latency and massively distributed.
Roles & Responsibilities
- You solve problems at their root, stepping back to understand the broader context.
- You develop pragmatic solutions and build flexible systems that balance engineering complexity and timely delivery, creating business impact.
- You understand a broad range of data structures and algorithms and apply them to deliver high-performing applications.
- You recognize and use design patterns to solve business problems.
- You understand how operating systems work, perform and scale.
- You continually align your work with Amazon’s business objectives and seek to deliver business value.
- You collaborate to ensure that decisions are based on the merit of the proposal, not the proposer.
- You proactively support knowledge-sharing and build good working relationships within the team and with others in Amazon.
- You communicate clearly with your team and with other groups and listen effectively.
Skills & Experience
- Bachelors or Masters in Computer Science or relevant technical field.
- Experience in software development and full product life-cycle.
- Excellent programming skills in any object oriented programming languages - preferably Java, C/C++/C#, Perl, Python, or Ruby.
- Strong knowledge of data structures, algorithms, and designing for performance, scalability, and availability.
- Proficiency in SQL and data modeling.
- 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
Java Developer(java8,spring boot,microservices, rest api, SQL,JPA)
- Should have strong hands-on experience in JUnit, Spring Framework, Spring Boot.
- Should have experience in Microservices, WebSphere.
- Preferred to have experience in Jenkin and CI and CD pipeline.
- Should have worked in Agile methodologies.
- Experience in Web development, Responsive UI.
- Ability to recognize user experience needs and convert them into the design.
- Knowledge in REST services
- Basic knowledge in HTML, CSS
- Experience in Microservices
Your Day-to-Day Tasks Include:
Works in requirements like Engineering, Design, Development, and Deployment. All the tasks involves working with Java, SQL Server and Couchbase.
Build and monitor data pipelines that serve 100+ websites, 150M+ unique impressions daily. Write code that can handle 4x more scale than the given requirement.
Maintain uptime of multiple distributed web applications.
Build data pipelines to pull data from upstream partners like Google.
You Should Have:
Minimum 3 years of experience with Java.
Minimum 2 year of experience with any SQL database (MySql, MSSql, Oracle, DB2, Sybase). Minimum 3 years of experience with web development.
Experience with any NoSql database (MongoDb, Couchbase, CouchDb, DynamoDb). Experience of designing/implementing/maintaining scalable systems.
Experience with any cloud platform (AWS/Azure/GCP).
Good To Have:
Experience with BI and data reporting.
Experience with Elastic search.
Understanding of data warehousing.
Experience in Node.js.











