
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: Senior Java Architect (12+ Years Experience)
Location: Remote (2 PM - 11 PM IST)
Experience: 12+ Years
Salary: ₹15L - ₹21L/yr
Employment Type: Contract (1 Year Extendable)
Job Description:
We are looking for a highly experienced Java Architect to join our team on a long-term contract basis. The ideal candidate should have deep expertise in designing scalable enterprise applications using Java and microservices architecture. The candidate should be capable of driving architecture decisions, mentoring development teams, and delivering high-performance solutions for enterprise-grade systems.
Key Responsibilities:
- Design and architect scalable enterprise applications using Java and microservices
- Lead system design and architecture decisions for complex applications
- Develop and implement microservices architecture patterns
- Drive technical architecture across multiple development teams
- Mentor and guide senior developers and engineering teams
- Handle high-traffic, scalable enterprise application architecture
- Collaborate with stakeholders to define technical requirements and roadmaps
- Ensure system performance, scalability, and reliability
- Review code and architecture designs for best practices
- Work with Spring Boot, Spring Cloud, and modern Java frameworks
Required Skills & Qualifications:
- 12+ years of hands-on experience in Java development and architecture
- Strong expertise in microservices architecture and design patterns
- Deep knowledge of system design principles and enterprise architecture
- Hands-on experience with Spring Boot and Spring Cloud
- Experience designing scalable, high-performance enterprise applications
- Proficiency in RESTful APIs, messaging systems, and API gateways
- Strong understanding of cloud platforms (AWS, Azure, or GCP)
- Experience with containerization (Docker) and orchestration (Kubernetes)
- Knowledge of database design (SQL and NoSQL)
- Expertise in JVM tuning and performance optimization
Technical Skills:
- Java 11+ (Java 17/21 preferred)
- Spring Boot, Spring Cloud, Spring Security
- Microservices architecture and design patterns
- RESTful APIs, GraphQL, gRPC
- Apache Kafka, RabbitMQ, or similar messaging systems
- Docker, Kubernetes, CI/CD pipelines
- PostgreSQL, MySQL, MongoDB, or similar databases
- Redis, Elasticsearch, or caching solutions
- Maven, Gradle, Git
Additional Requirements:
- Ability to work 2 PM - 11 PM IST (US/Europe Shift Timing)
- Immediate availability or short notice period (15 days max)
- Strong problem-solving and analytical skills
- Excellent communication skills for stakeholder collaboration
- Experience mentoring technical teams
- Contract commitment for a minimum of 1 year (extendable)
Good to Have (Preferred Skills):
- Experience with reactive programming (WebFlux, Project Reactor)
- Cloud certification (AWS Solutions Architect, etc.)
- Experience with observability tools (Prometheus, Grafana)
- Knowledge of domain-driven design (DDD)
- Experience with multi-cloud or hybrid cloud architectures
- Freelance/contract experience (preferred)
What We Offer:
- 1.2 ~ 1.8 LPM fixed contract salary
- Long-term contract (1-year extendable)
- Remote work with a flexible 2-11 PM IST schedule
- Work with cutting-edge enterprise technologies
- Opportunity to architect large-scale systems
- Collaborate with experienced engineering teams
- Immediate start for the right candidates
Strong Software Engineer, Engineering Manager Profiles
Mandatory (Experience) – Must have minimum 4+ years of hands on experience in software development
Mandatory (Tech Skillset) – Must have 3+ years of hands-on experience in backend development using Java / Node.js / Go / Python (any 1) OR 3+ YOE in frontend Development using React / Angular / Vue (any 1)
Mandatory (Mentoring Skillset) – Must have at least 1+ year of experience leading or mentoring a team of software engineers.
Mandatory (Tech Skills) – Must have a solid understanding of microservices architecture, APIs, and cloud platforms (AWS / GCP / Azure).
Mandatory (DevOps Skillset) – Must have hands-on experience working with Docker, Kubernetes, and CI/CD pipelines.
Mandatory (Company) – Top-tier/renowned product-based company (preferred Entreprise B2B SaaS)
Mandatory (Education) – Undergraduation from Tier-1 Engineering College (IIT, BITS, IIIT, NSUT, DTU, etc.)
Mandatory (Note): No hire policy from Sprinklr
Strong Backend Engineer Profiles
Mandatory (Experience 1) – Must have 2+ years of hands-on Backend Engineering experience building production-grade systems in a B2B SaaS or product environment
Mandatory (Experience 2) – Must have strong backend development experience using at least one backend framework such as FastAPI / Django (Python), Spring (Java), or Express (Node.js)
Mandatory (Experience 3) – Must have a solid understanding of backend fundamentals, including API development, service-oriented architecture, data structures, algorithms, and clean coding practices
Mandatory (Experience 4) – Must have strong experience working with databases (SQL and/or NoSQL), including efficient data modeling and query optimization
Mandatory (Experience 5) – Must have experience designing, building, and maintaining APIs and backend services, including integrations with external systems (CRMs, payment gateways, ERPs, data platforms, etc.)
Mandatory (Experience 6) – Must have experience working in cloud-based environments (AWS / GCP / Azure) and be familiar with Git-based collaborative development workflows
Mandatory (Domain) – Experience with financial systems, billing platforms, fintech applications, or SaaS revenue-related workflows is highly preferred
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
Preferred
Preferred (Education) – Candidates from Tier - 1 engineering institutes (IITs, BITS are highly preferred)
Job Title: IAC SRE Engineer
Location: Pune, Mumbai, Bangalore
Experience Required: 4 Years
Role Overview:
We are looking for experienced IAC Engineers with a strong background in Akamai, Data Structures & Algorithms (DSA), Java, and DevSecOps. The ideal candidate should have hands-on development experience, be proficient in writing Infrastructure as Code using Terraform, and demonstrate strong problem-solving skills.
Core Skills:
- Akamai – Strong experience in CDN, caching, and performance optimization.
- Data Structures & Algorithms (DSA) – Strong problem-solving and coding abilities.
- Java – Solid programming background and experience in development.
- DevSecOps – Understanding of integrating security in CI/CD pipelines and infrastructure.
Good to Have:
- WAF (Web Application Firewall) – Knowledge of WAF is a plus, though not mandatory.
Additional Skills:
- Experience with SRE (Site Reliability Engineering) practices is beneficial.
- Strong hands-on with Terraform for managing cloud infrastructure.
What you will be doing
- Building and maintaining Java micro services.
- Develop new features and improve existing features of the application.
- Coding, Implementing, Unit Testing and Documenting Java based services.
- Design, build, and maintain efficient, reusable, and reliable Java code.
- Code reviews and ensuring adherence to software development standards.
- Contribute to team and organizational improvements in process and infrastructure.
- Participating in requirements gathering and functional specification activities.
- Resolving and helping to mitigate production issues.
What you need to be successful
- Has proven himself as a solid individual contributor and has some initial management ability
- Understands the culture and upholds it
- Well respected with the team
- Looking to grow more as a manager than as an engineer
- Split time b/w hands-on technical work and people management of a small team
- Be a role model for the people in your team
- Responsible for team mentorship, technical planning, resource allocation & project delivery
- Build solid working relationships with counterparts outside engineering
- If we shortlist you for a lead role, then you'll have to mentor SDE-1 towards their SDE-2 journey.
- Progress up to manager in 2-3 years
- Strong Data Structure and Algorithms
- Experience of building micro services architectures, developing RESTful services,continuous integration, unit and integration testing.
- Proficient with SpringBoot, Hibernate, JUnit and other Java frameworks apart from RDBMS and NoSQL databases - PostgreSQL, MongoDB
- Gauge or other BDD frameworks and experience in Fintech would be preferred.
XpressBees– a logistics company started in 2015 – is amongst the fastest growing companies of its
sector. While we started off rather humbly in the space of ecommerce B2C logistics, the last 5 years
have seen us steadily progress towards expanding our presence. Our vision to evolve into a strong full-
service logistics organization reflects itself in our new lines of business like 3PL, B2B Xpress and cross
border operations.
Our strong domain expertise and constant focus on meaningful innovation have helped us rapidly evolve
as the most trusted logistics partner of India. We have progressively carved our way towards best-in-
class technology platforms, an extensive network reach, and a seamless last mile management system.
While on this aggressive growth path, we seek to become the one-stop-shop for end-to-end logistics
solutions. Our big focus areas for the very near future include strengthening our presence as service
providers of choice and leveraging the power of technology to improve efficiencies for our clients.
Job Description
XB is looking for driven & talented engineers to build highly scalable, reliable and performant cloud-
based platforms to drive the logistics business. You will have opportunities to make a big impact at XB
on the software solutions being built for Logistics businesses. We build a variety of technology products
that span multiple businesses.
The challenges that SDEs at XB solve are big (handle 50 Lakh shipments per day!) and influence the E-
Commerce business in India in coming years. We are looking for individuals who are passionate about
creating new products, features, and services from scratch while managing ambiguity and the fast pace
of the company. The challenges span areas like highly scalable and reliable orchestration
platforms, Client Integration API frameworks, Billing Solutions, Workforce Engagement. Further you may
solve complex optimization problems like Vehicle routing, Allocation, Network Optimization etc.
Roles & Responsibilities
You will be responsible for working with cross functional teams to deep dive into the
business and technology problems related to our portfolio of products, understanding the
gaps that exist in our current tools, and work within our team and with partner teams to
design best in class solutions.
You will have the opportunity to influence, invent, and design system architecture
across multiple product and technology spaces.
You will lead and mentor other talented engineers. You will be responsible for building
the best customer experience, keeping latency, security, and usability in mind.
You will interact with Product Managers and Designers and convert their vision into
a technical solution.
You will own portions of software deliverables including major critical path code from
your designs while finding opportunities to grow and mentor the team around you.
You will collaborate with other engineering leads and guide the team on software
development best practices and set examples by using them in solutions that you build.
You will own the end-to-end design of major deliverables, working closely with a team
of SDEs and Front-End Engineers to execute them. This is a high visibility and fast-paced
environment where you will make a direct impact on the customer experience and the
bottom line of the company.
You should have a commanding understanding of object-oriented design, data
structures and algorithms which you use to mentor a team of engineers. You should have
experience with agile methodologies, experience building scalable services and robust user
interfaces. We make extensive use of AWS Services (API Gateway, Lambda, SQS, etc.) and
prior experience is a plus. Experience with modern JavaScript frameworks (like angular,
react, backbone, and node.js) would be a plus.
Qualifications
Experience developing cloud software services and an understanding of design for
scalability, performance, and reliability.
Development experience defining, developing and maintaining web service API's
Demonstrated ability to mentor other software developers to maintain architectural
vision and software quality.
Experience in communicating with users, other technical teams, and senior
management to collect requirements, describe software product features, technical designs,
and product strategy.
Experience taking a leading role in building complex software systems that have been
successfully delivered to customers.
Knowledge of professional software engineering practices & best practices for the full
software development life cycle, including coding standards, code reviews, source control
management, build processes, testing, and operations.
Experience with distributed computing and enterprise-wide systems
Deep understanding of CS fundamentals including data structures, algorithms and
complexity analysis.
Experience building large-scale, high-performance systems in a complex, multi-tiered,
distributed environment.
Design and architecture expertise as well as familiarity with object-oriented analysis and
design patterns (OOA/OOD).
Ability to thrive in a fast-paced, dynamic environment.
• 3+ years of software development experience on web applications
• Experience in working in an onsite and offshore development model
• Must have hands-on design and development experience in Cloud (GCP/AWS/Azure), Kubernetes, Microservices,
Java, J2EE, Spring/Boot, Hibernate, JUnit and Integration with front end via rest interfaces.
• Must have Hands-on experience in Multi-threading, Non-blocking IO, Kafka, JMS
• Strong integration background required. Experience with Microservices, REST, JSON and APIs is required
• Experience with as many of the following is highly desirable: Tomcat, Node.js, XML, XSLT, XPath, Web Services,
MongoDB, MYSQL, and query performance tuning
• Experience with code management and continuous integration techniques and tools such as Maven, Gradle, Github,
JMeter, Jenkins, NPM etc. is highly desirable
• Experience building complex software systems that have been successfully delivered to customers
• Strong Computer Science fundamentals and working knowledge in data structures, algorithms, problem-solving and
complexity analysis
• Knowledge of professional software engineering practices and best practices for the full software development life
cycle (SDLC), including coding standards, code reviews, source control management, build processes, testing, and
operations
• Proven ability to troubleshoot issues in production including root cause analysis
• Self-directed and capable of working effectively in a highly innovative and fast-paced environment
• Experience with Agile software development in a UNIX/Linux environment
• Experience with system architecture/design
Out of many tools and technologies, we use Java, MongoDb, Cassandra, Redis, Twem, Netty extensively for our back-end development.
- Leading the entire Backend platform for a product portfolio.
- End to end delivery new features.
- Evolving the architecture for performance and scalability.
- Design, develop and own components of a highly scalable, distributed web services platform.
- Constantly strive to improve software development process and team productivity.
- Mentor and train team members
- Lead module development independently
Required background, Knowledge, Skills and Abilities
- 5.5+/ 7+ Years of experience in a scalable product/ecommerce organization·
- Excellent Java skills, Understanding of Spring framework & MVC approach
- Strong knowledge of Performance optimization and caching techniques.
- Strong Object Oriented Programming concepts, data structure and algorithms
- Experience in developing scalable, fault-tolerant, distributed backend services
- Experience with prevalent design patterns and advanced system designing
- Good experiences with databases and Schema design. We heavily use NoSQL databases
- Strong Problem Solving skills











