
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.).
Strong Senior Backend Engineer profiles
Mandatory (Experience 1) – Must have 5+ years of hands-on Backend Engineering experience building scalable, production-grade systems
Mandatory (Experience 2) – Must have strong backend development experience using one or more frameworks (FastAPI / Django (Python), Spring (Java), Express (Node.js).
Mandatory (Experience 3) – Must have deep understanding of relevant libraries, tools, and best practices within the chosen backend framework
Mandatory (Experience 4) – Must have strong experience with databases, including SQL and NoSQL, along with efficient data modeling and performance optimization
Mandatory (Experience 5) – Must have experience designing, building, and maintaining APIs, services, and backend systems, including system design and clean code practices
Mandatory (Domain) – Experience with financial systems, billing platforms, or fintech applications is highly preferred (fintech background is a strong plus)
Mandatory (Company) – Must have worked in product companies / startups, preferably Series A to Series D
Mandatory (Education) – Candidates from Tier - 1 engineering institutes (IITs, BITS, are highly preferred)
Minimum Qualifications:
5+ years of experience with Linux/Unix system administration and networking fundamentals 3+ years in a Software Engineering role or equivalent experience
4+ years of working with AWS
4+ years of experience working with Kubernetes, Docker.
Strong skills in reading code as well as writing clean, maintainable, and scalable code
Good knowledge of Python
Experience designing, building, and maintaining scalable services and/or service-oriented architecture Experience with high-availability
Experience with modern configuration management tools (e.g. Ansible/AWX, Chef, Puppet, Pulumi) and idempotency
Bonus Requirements:
Knowledge of standard security practices
Knowledge of the Hadoop ecosystem (e.g. Hadoop, Hive, Presto) including deployment, scaling, and maintenance Experience with operating and maintaining VPN/SSH/ZeroTrust access infrastructure Experience with CDNs such as CloudFront and Akamai
Good knowledge of Javascript, Java, Golang
Responsibilities:
- Good understanding of programming language
- Concepts of Java, Maven
- Source Control
- Logically Strong in coding practices
- Data structure Understanding.
- Security encryption and decryption
- Data encoding decoding
Requirements:
- Strong core Java development skills.
- Exposure to security tools.
- Experience in working with customers, understanding business requirements
- Good analytical and troubleshooting skills.
- Working knowledge of Jenkins/Maven
- Key requirements: Core Java, CI/CD, Docker, Maven, Jenkins, REST API, Kafka, Redis, cache, elastic cache
Responsibilities:
Lead the design and development of sophisticated, high availability, and secured
server-side applications with a primary focus on Golang.
● Collaborate with cross-functional teams to understand requirements, architect
solutions, and deliver high-quality software products.
● Mentor and guide junior engineers, sharing your engineering expertise and best
practices to foster skill development within the team.
● Analyze and optimize performance, scalability, and reliability of existing Golang
applications, making strategic improvements where necessary.
● Design and implement automated unit and integration tests to ensure code quality,
maintainability, and stability.
● Stay up-to-date with the latest advancements in software technologies,
recommending their adoption when appropriate.
● Champion code reviews, architectural discussions, and technical documentation to
maintain high development standards.
● Troubleshoot and resolve complex issues, providing innovative solutions to overcome
challenges.
● Contribute to the recruitment and hiring process by participating in interviews,
evaluating candidates, and providing input on hiring decisions.
Requirements
Bachelor's or Master's degree in Computer Science, or a related field.
● 3+ years of experience in software development, with substantial experience in
Golang and cloud infrastructure.
● Expert-level proficiency in designing and developing high-performance, concurrent
applications with Golang.
● Experience with distributed systems, microservices architecture, and containerization
(e.g., Docker, Kubernetes).
● Solid knowledge of software testing methodologies and tools, including unit testing
and integration testing for Golang applications.
● Demonstrated ability to lead projects, collaborate effectively with teams, and mentor
junior engineers.
● Excellent problem-solving and analytical skills, with the ability to tackle complex
technical challenges.
● Having prior experience in the FinTech domain would be an added advantage.
● You should be able to take ownership of a project end to end.
● Your primary focus will be to build, implement & maintain the complete back-end stack of the product.
● You will create production-grade code and will implement the solutions which run bug-free.
● Participate in product development discussions and product development road-maps.
● Collaborate with members across departments to identify and build on
improvements to products, processes, and systems.
Required Experience and Qualifications:
2 to 6 years of software development experience.
● Experience in working on application architecture design will be preferred.
● Experience in working on at least 1 or 2 projects, managing or leading the entire
tasks.
● Experience in Docker/Kubernetes, Agile methodologies & CI/CD automation process.
● Knowledge of Queueing technologies like Kafka, RabbitMQ, ActiveMQ, and Version control using Git.
● Experience in microservices architecture, in-memory systems like Redis and basic knowledge of Linux/Unix systems.
● Experience in building applications processing large volumes of streaming data will be preferred.
● Experience from a middle size company or from a startup will be preferred.
● BE/MCA/MSc in Computers/Information technology with a good academic record.
- 8+ years of relevant work experience
- Well-versed in data structures, algorithms, and software design. Programming experience with at least one of
- Java or Python and object-oriented design
- Knowledge on SQL, NoSQL databases, Messaging/Caching technologies and AW deployments is a plus
- Exposure to the architecture and design (design patterns, security, reliability and scaling) of new and current systems. Experience in building highly scalable business applications, which involve implementing large complex business flows involving multiple third-party integrations
- Prior startup experience is a plus
• Solid experience with application frameworks such as Springboot and strong familiarty with micro services architecture and design patterns
• Familiarity with databases like MySQL, MongoDB, Redis etc
• Hands-on experience in analysis, design, coding, and implementation of complex, custom-built applications
• Exposure to CI/CD using Gitlab, Jenkins preferred
• Familiarity with Docker, Kubernetes, EFK Stack is highly desired
• Broad knowledge of web standards relating to APIs (OAuth, SSL etc.)
• Exposure to product development.
• Understand Architecture Requirements and ensure effective design, development and maintenance of multiple micro services in Java Springboot deployed in cloud within containers consuming data present in relational as well as NoSQL databases.
o The microservices shall expose APIs which allow ease of integration with variety of client apps
o Microservices should handle a scale of thousands of requests per second
• Develop communication patterns between microservices which are efficient, lightweight and secured using Kafka
• Debugging issues on a live setup
• Lead a small team of engineers
• Create test cases and technical documentation
• Maintain a high level of code quality and consistency by adhering to and enhancing the coding standards, design methodology and programming practices
Job description
- Lead design, development, implementation and maintenance of applications & back-end services demonstrating service-oriented architecture.
- Design, build, test, and maintain scalable APIs, services, and systems within the platform.
- Choose the right Data Structures, tools, and tech stacks and do high-level design with guidance.
- Build, develop, mentor, review code and coach junior team members.
- Extensive programming experience with cross-platform development: Java/SpringBoot, Javascript/Node.js, Express.js or Python
- Extensive knowledge of ElasticSearch, MongoDB or Cassandra, Redis, SQS and data streaming (Spark, Flink, Kafka streams, storm, etc.).
- Well versed in Kafka Understanding cloud native technologies such as Docker and Kubernetes, capable to cover full development lifecycle including CI/CD
- Experience in use of source code management system like GIT, bitbucket and build tools like ant, maven, Gradle or make.
- Take great pride in Code quality and developer productivity.
- Put in Microservcies architecture in place that paves road for scalability, efficiency, observability, and availability.
- Build (and open source) data processing, storage and fetch systems at the petabyte scale with the lowest cost/GB while still responding in milliseconds at the 99th percentile.
- Write algorithms and services to influence personalisation and recommendation from a real-time recommendation engine for both home feed to surface most viral videos + video e-commerce
- Build machine learning pipelines using Kinesis,Spark/Flink/TensorFlow etc
- Agile methodologies, Sprint management, Roadmap, Mentoring, Documenting, Software architecture
- Proven experience in handling large infrastructure and distributed systems Liaison with Product Management, DevOps, QA, Client and other teams Your Experience Across The Years in the Roles You’ve Played
Requirement:
- Have total or more 7 - 9 years of experience with 2-3 years in a startup. Have B.Tech or M.Tech or equivalent academic qualification from premier institute. Experience in Product companies working on Internet-scale applications is preferred
- Thoroughly aware of cloud computing infrastructure on AWS leveraging cloud native service and infrastructure services to design solutions.
- Follow Cloud Native Computing Foundation leveraging mature open source projects including understanding of containerisation/Kubernetes.
We Value Engineers Who Are :
- Customer-focused: We believe that doing what’s right for the creator is ultimately what will drive our business forward.
- Obsessed with Quality: Your Production code just works & scales linearly
- Team players. You believe that more can be achieved together. You listen to feedback and also provide supportive feedback to help others grow/improve.
- Pragmatic: We do things quickly to learn what our creators desire. You know when it’s appropriate to take shortcuts that don’t sacrifice quality or maintainability
Chingari Benefits
The glory. Almost too much responsibility.
A fun-life balance
A ticket on our rocket ship to the moon. ��
Primary Location: Pune
Description:
Responsibilities -
● The candidate is expected to lead one of the key business areas end to end. This is pure
hands on role but he/she may need to mentor junior person in the team.
● Requirement gathering with business and get this prioritized in the sprint cycle.
● Come up with Project Architecture design and get the same approved from Tech Review
committee.
● Ensure quality and timely delivery.
Technical and Professional Requirements-
Required Tech Skills
● Very Strong fundamental of OOPs programming
● Very Strong at Java fundamentals, Multithreading, Streams
● Good understanding of Data Structure
● Good knowledge of any distributed caching /computing framework/tools
● Good at SQL query/optimization
Nice To Have (willing to learn)
● AWS Lambda (Serverless), Redis, Kinesis , Big Data , Sparx , spring boot , NoSQL
database , React Js, JMS/SQS , AWS Cloud, nodejs, python
● Well versed with latest technology stack on server side programming
● Good to have business knowledge of Loan management.










