
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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Required Skills for the Java role :
- Experience in Core Java, CXF, Spring.
- Experience in spring boot, microservices.
- Extensive experience in developing enterprise-scale n-tier applications for the financial domain. Should possess good architectural knowledge and be aware of enterprise application design patterns.
- Should have the ability to analyze, design, develop and test complex, low-latency client-facing applications.
- Good development experience with RDBMS, preferably Sybase database
- Good knowledge of multi-threading and high volume server side development
- Experience in sales and trading platforms in investment banking/capital markets
- Basic working knowledge of Unix/Linux
- Excellent problem solving and coding skills in Java
- Strong interpersonal, communication and analytical skills.
- Should have the ability to express their design ideas and thoughts.
- Bachelor's/Master’s degree in Computer Science or related field from a top-tier institute (IIT, NIT, BITS, etc.).
What You’ll Do
• Build and scale backend services using Java & Spring Boot
• Work on API integrations (REST, SOAP), caching & rate limiting
• Contribute across the full SDLC – design, development, testing & deployment
• Solve problems around performance, scalability & reliability
What We’re Looking For
• Strong knowledge of Data Structures & Algorithms
• Experience with Java, Spring Boot, REST/SOAP
• Hands-on with system & solution design
• Database experience: MongoDB / PostgreSQL / MySQL / Oracle
• Good debugging skills & unit testing
• Familiarity with Git and AI coding assistants (Copilot, Claude, etc.)
Job Summary:
We are seeking a skilled and experienced Java Developer with hands-on expertise in AWS, Spring Boot, and Microservices architecture. As a core member of our backend development team, you will design and build scalable cloud-native applications that support high-performance systems and business logic.
Key Responsibilities:
- Design, develop, and maintain backend services using Java (Spring Boot).
- Build and deploy microservices-based architectures hosted on AWS.
- Collaborate with DevOps and architecture teams to ensure scalable and secure cloud solutions.
- Write clean, efficient, and well-documented code.
- Optimize application performance and troubleshoot production issues.
- Participate in code reviews, technical discussions, and architecture planning.
Must-Have Skills:
- 4.5+ years of experience in Java development.
- Strong proficiency in Spring Boot and RESTful APIs.
- Proven hands-on experience with AWS services (EC2, S3, Lambda, RDS, etc.).
- Solid understanding of microservices architecture, CI/CD, and containerization tools.
- Experience with version control (Git), and deployment tools.
At Primathon, we strive to deliver world-class software for our clients and empower our engineers to become full-stack in technology and provide them 360° experience. We are looking for champions in backend development with experience in NodeJs/Python. You would be working on NodeJs, Python, PostgreSQL, MongoDB, Redis Elastic search, RabbitMq, SQS, Docker, AWS.
Responsibilities and Duties
● Participate in agile software development, prototyping and code reviews
● As a backend engineer, you will work on backend services in Node JS, MongoDB, PostgreSQL, Redis.
● Design, implement and/or use RESTful web services
● Designing database schema
● Writing automation test cases
● Write testable, well-thought-out code within the ecosystem, embracing additional languages and frameworks when appropriate
Required Experience, Skills and Qualifications
● 1+ years of experience as a Backend developer.
● Experience designing, implementing and using RESTful Web Services with Service-Oriented Architecture.
● Knowledge & basic understanding of JavaScript frameworks like React, D3, etc and strong experience working with MVC.
● Solid understanding of version control principles, preferably using Git
● Experience using mocking frameworks, testing frameworks, dependency injection, NoSQL and/or relational databases
● Strong knowledge on how to navigate the vast and quickly evolving collection of open source projects and select the right tool for the job
● Attention to detail and the ability to build reliable, scalable, and flexible software.
Work Experience ** Minimum 2+Years
• BS/MS in Computer Science or equivalent from a premier institute Strong development, coding experience in one or more programming languages like OO Programming (Java), Functional/Scripting languages.
• Expertise in Data Structures, Algorithms, Concurrency.
• Expertise in Micro-services Architecture, multi-threading, performance-oriented programming and designing skills
• Strong software design/development experience in building massively large-scale distributed internet systems and products
• Experience of working on Big Data technologies and applications
• Expertise in one or more persistence technologies (Cassandra, Redis, ElasticSearch, RDBMS).
• Superior organization, communication, interpersonal and leadership skills
• Must be a proven performer and team player that enjoy challenging assignments in a high-energy, fast-growing and start-up workplace
• Must be a self-starter who can work well with minimal guidance and in a fluid environment
• Provide good attention to details
• Must be excited by challenges surrounding the development of highly scalable & distributed system for building audience targeting capabilities
• Agility and ability to adapt quickly to changing requirements and scope and priorities
- 3+ years of SDE work experience from Product based companies
- Experience in Java, Spring Boot, MySQL, Kafka, Hbase, AWS
- Experience in Multi threading, distributed systems, Best practices of coding, scaling
You will be building efficient, scalable & high performance microservices and applications which will power the network of thousands of retailers across the country and at the same time improve the efficiency and visibility of information flow in our supply chain systems.
Your core responsibilities:
- Create elegant, efficient and maintainable software to support and extend our current products.
- Solve complex architectural challenges when implementing new features.
- Integrate with databases, file systems, cloud services when delivering scalable solutions.
- Troubleshoot and fix reported customer issues, delivering software patches as needed.
- Assisting in making design decisions based on performance, scalability, security, and future expansion.
- Communicating and collaborating with management, product, QA teams.
What will help you thrive in this role?
- Degree in Computer Science, similar technical field of study or equivalent practical experience.
- 5+ years of experience as a Backend Engineer.
- Proficiency in web development using any of the languages: PHP, Python, Java, NodeJS or Golang.
- Should possess a solid grasp of object-oriented programming, system architecture & design, databases, development, and testing methodologies.
- Good in Design (HLD and LLD).
- Good in Database schema design.
- Good to have experience with AWS or Google Cloud or Azure and serverless architecture.
- Excellent verbal communication skills.
- Track record of delivering successful products as an engineer.
- Experience with large applications of some scale will be a plus.
- Ability to deep dive, understand & improve the legacy code.
- Domain knowledge of supply chain & retail industry is a plus.
Whom you will be sharing your work day with?
We are a language agnostic engineering team of independent thinkers who understand the priorities of a rapidly growing startup and excel at choosing high impact projects. Our core beliefs are:- We are in the forefront of disrupting traditional retail & supply chain industry by building distributed systems
- We are hardcore open source lovers and believe in the strength of open source community.
- We believe technology can change the way information is consumed.
- We use a data driven approach to build new products and features.
- Build new tech solutions to improve business processes and enable our various departments to help service our teams better.
- We embrace and enable DevOps culture within the organisation.
And yes! We do have new furry friends coming to our office everyday.
Work Perks
- Hybrid work environment with flexibility to work from anywhere.
- A great salary, commensurate with experience.
- Unlimited vacation policy which means Paid Vacations.
- A relaxed & flexible working atmosphere.
- Weekly parties (Unofficial).
- Paid outings to remote work locations and industry events/conferences.
- Paid Health Insurance for you and your loved ones.
- Develop creative solutions and write technical design based on the requirements.
- Work closely with peer teams to ensure that applications are written to allow for overall system performance.
- Assist in tuning and optimization.
- Develop and execute unit tests for product components.
- Perform peer code reviews and provide feedback.
- Promote high quality, scalability, and timely completion of projects.
- Apply agile approach to coordinate development and determine project scope and limitations.
- Bachelor degree in Engineering, CS or equivalent experience
- Development in Core Java, J2EE, Struts, spring, Client-Side scripting, Hibernate, Database
- Development of scalable core-java applications, Web Applications and Web Services
- OOP concepts
- Data Structures, algorithms and their applications
- Strong problem-solving skills
- Experience in building microservices
- Strong experience with Spring Boot stack (spring cloud, spring-data)
- Extensive experience in developing and consuming REST APIs
- Experience in Kafka distributed messaging
- Hands-on experience in Redis, Apache Ignite, Hazelcast
- Strong experience in RDMS and NoSQL databases Mongo
- Experience in using Elastic Search
- Experience in profiling applications
- Strong analytical skills and general logical reasoning
- Excellent written and verbal communication skills.
- Good understanding of Software development life cycle (SDLC)
- Basic SQL queries
- Own development, design, scaling and maintenance of application and messaging engines that power the central platform of Capillary's Cloud CRM product.
- Contribute to overall design and roadmap.
- Mentor Junior team members.
Required Skills:
- Innovative and self-motivated with passion to develop complex and scalable applications.
- 3-5 years of experience in software development with strong focus on algorithms and data structures.
- Strong coding and design skills with prior experience in developing scalable & high availability applications using Core Java/J2EE, Spring, Hibernate.
- Work experience with Relational databases is required (Primarily MySQL)
- Prior work experience with Non-Relational databases (primarily Redis, MongoDb) is an added plus.
- Strong Analytical and Problem Solving Skills.
- BTech












