
Software Development Engineer
at B2C Marketplace for FMCG products.
- Work on building scalable backend platform for customer & seller apps, brands platform, demand generation platform, supply chain & logistics platform, credit platform and several cross platform software components
- Participate in the process to fundamentally change the food and grocery ecosystem in India, and impact billions of people through technology, mobile, and data science
Requirements:
An ideal candidate for this role is someone who has-
- BE/BTech degree in Computer Science from a top engineering school
- 1-5 years of professional software development experience
- Strong problem solving skills and strong command on object oriented design, data structures, algorithms and other computer science fundamentals.
- Strong coding skills - professional experience in developing production-quality software in Java/Python
- Expertise in Web Services, Service-oriented architecture, Databases, NoSQL, Distributed systems, Cloud Technologies.
- Extreme software engineering skills to design and develop low-latency, high availability, internet-scale web services
- Solid understanding of the full software development life cycle and software engineering best practices
- Ability to understand business requirements and translate them into technical requirements
- Demonstrated ability to own software design and development end to end from requirements to launch.
- Ability to collaborate with cross-functional teams to define, design, and ship new features.
- A startup mindset - An athlete who can run at breakneck speed of a startup, yet someone who can bring method to madness through processes suitable for different stages of the company - early stage prototyping and rapid experimentation, before product/market fit, after product/market fit, and scaling.
- Familiarity with Agile development, Scrums, continuous integration, and test driven development processes
- Data driven product development approach - strong focus on data backed engineering decisions.
- Ability to develop products incrementally in fast iterations
- Ability to do collaborative problem solving and design/build chaos resilient systems
- Strong focus on software quality
- Ability to mentor junior developers, and help build an excellent engineering team
- Ability to be a talent magnet - attract great talent to join the core team.

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Quick Facts About the Role
Role:
Senior Software Developer (Backend) - .Net with Microservices & Cloud
YOE:
6.5+ years
Skills:
C#, ASP. Net, Microservices Architecture, ASP.NET Core, Web API development, Azure Kubernetes Service (AKS), API Gateway / Azure API, Entra (Authentication), Azure Service Bus, Azure Functions, Azure Blob storage, Caching, NoSQL Databases
About the Role
The Software Developer Senior Designs, builds, tests, and – most importantly – ships high-value software that solves real problems. Strives for security, performance, simplicity, usability, and maintainability. Mentors and guides less experienced software engineers.
Responsibilities
1. Team Contribution
- Works within established agile methods, promoting an atmosphere of continuous improvement.
- Continuously learns new technologies and patterns and practices.
- Documents knowledge for the benefit of the team.
- Reports to the team on obstacles and roadblocks.
- Participates in, and occasionally leads, sprint planning, standups, retrospectives, and other team meetings.
- Promote patterns and best practices on the team.
- Mentors and guides the less experienced software engineers.
2. Planning and Design
- Works with the product team and stakeholders to refine and document requirements.
- Estimates effort for planning purposes.
- Designs and documents enterprise-level software architecture, consulting with Enterprise Architecture when appropriate.
3. Development
- Writes code to develop software that meets requirements and specifications.
- Follows established software development life cycle (SLDC).
- Writes code with readability and future maintenance in mind.
- Follows established source control standards and best practices.
- Adheres to established secure coding practices.
- Reviews code for other developers.
- Leads team-based development efforts.
4. Quality Assurance
- Validates QA findings and fixes defects.
- Develops integration and testing points in the software that allow for QA testing.
- Assists QA in running performance and load tests.
5. Release
- Assists with release planning and releases.
6. Support
- Assists the support team as needed, including root cause analysis.
- Writes maintenance and metric statistics scripts and entry points for measuring and monitoring.
Requirements
Solid Understanding of The Following:
Microservices Architecture:
- Microservices design principles (bounded contexts, loose coupling)
- API-first design and contract management
- Event-driven design principles
- Asynchronous messaging patterns
- Eventual consistency concepts
- Idempotency and message replay handling
Technical Skills:
- ASP.NET Core Web API development
- Web Apps
- Azure Kubernetes Service (AKS)
- Azure Blob Storage usage and lifecycle management
- API Gateway / Azure API Management concepts
- Entra (Authentication)
- Azure Service Bus
- Azure Functions
- Caching
- NoSQL Databases
Processes & Standards:
Git, GitFlow, OO Programming, Kanban, Secure Coding, & Agile Methodologies
Bonus Skills
- Excellent written and verbal communication
- Excellent documentation
- Continuous learning
- Collaboration across team and functional boundaries
- Troubleshooting and creative problem solving
- Design simple architecture that supports complex applications and APIs
- Architect extensible databases
- Author complex component-based client applications and restful APIs
- Perform advanced CRUD operations against multiple data sources
- Manipulate enterprise level data structures
- Mentor less experienced team members
- Take ownership of team processes and legacy applications
- Perform business analysis tasks, such as requirements gathering and wireframing
Evaluation Criteria
- Consider candidates with 6.5+ years of experience only (do not go below this threshold).
- Must have excellent communication skills.
- Ensure the mandatory technical skills are clearly reflected in the resume:
- C# (async/await, dependency injection, LINQ)
- ASP.Net Core
- RESTful APIs
- Microservices Architecture
- ASP.NET Core
- Web API development
- Azure Kubernetes Service (AKS)
- API Gateway / Azure API
- Entra (Authentication)
- Azure Service Bus
- Azure Functions
- Azure Blob storage
- Caching
- NoSQL Databases
- Candidates should have at least 3 years of hands-on experience with Azure and Microservices.
- This Azure and Microservices experience must be from their current or a recent previous project.
We are looking for a Senior Backend Engineer with a strong background in building distributed, scalable, and high-performance backend systems. The ideal candidate has 6+ years of backend engineering experience, including 3+ years in microservices or distributed architecture, and deep expertise in Python, FastAPI, PostgreSQL, Redis, and async I/O patterns.
The candidate will own backend services end-to-end — from architecture and design to implementation, optimization, and production support — while working closely with cross-functional teams to deliver mission-critical systems.
Key Responsibilities
1. Backend Architecture & Development
- Architect, design, and implement backend services using Python (preferably FastAPI) with clean, maintainable, and scalable code.
- Develop microservice components, service communication layers, and distributed workflows.
- Build APIs and backend modules optimized for performance, fault tolerance, and low latency.
2. Distributed Systems & Scalability
- Design and maintain distributed systems capable of handling high throughput and large-scale operations.
- Implement inter-service communication patterns (REST, event-driven, message queues, pub/sub).
- Ensure system resiliency through redundancy, graceful degradation, and autoscaling strategies.
3. Asynchronous & Event-Driven Architecture
- Build async workflows, background tasks, and pipeline services leveraging asyncio or async frameworks.
- Develop event-driven components including producers, consumers, and event processors.
- Optimize I/O-heavy operations to maximize concurrency and throughput.
4. Data Storage, Pipelines & Caching
- Design relational schemas, write optimized SQL queries, and work with PostgreSQL performance tuning (indexes, partitions, query planning).
- Implement caching strategies, rate limiting, distributed locks, and session storage using Redis.
- Build data validation pipelines and compliance-driven data flows ensuring data correctness and auditability.
5. Security, Reliability & Observability
- Implement authentication, authorization, encryption, and secure API practices.
- Build monitoring, alerting, metrics, and tracing systems using modern observability tools.
- Diagnose production issues, identify bottlenecks, and drive long-term fixes and improvements.
6. Code Quality & Technical Leadership
- Conduct detailed code reviews and ensure engineering best practices across the team.
- Participate in technical roadmap planning, architectural discussions, and system design decisions.
- Mentor junior and mid-level engineers; drive a culture of technical excellence and ownership.
Required Qualifications
- 6+ years backend engineering experience.
- 3+ years building microservices or distributed systems.
- Strong expertise in Python and frameworks like FastAPI (or Flask/Django with async exposure).
- Deep understanding of async I/O, concurrency models, and asynchronous programming in Python.
- Strong experience with PostgreSQL (schema design, advanced queries, optimization).
- Hands-on experience with Redis for caching, queues, session management, and distributed patterns.
- Experience with event-driven architectures, message processing, or streaming systems.
- Solid understanding of system design, scalability principles, and API lifecycle management.
- Experience working with CI/CD pipelines, containerization (Docker), and cloud environments.
- 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.
Required Skills:
- 2+ year of experience in Development in JAVA technology.
- Strong Java Basics
- SpringBoot or Spring MVC
- Hands on experience on Relational Databases (SQL query or Hibernate) + Mongo (JSON parsing)
- Proficient in REST API development
- Messaging Queue (RabitMQ or Kafka)
- Microservices
- Any Caching Mechanism
- Good at problem solving
Good to Have Skills:
- 4+ years of experience in using Java/J2EE tech stacks
- Good understanding of data structures and algorithms.
- Excellent analytical and problem solving skills.
- Ability to work in a fast paced internet start-up environment.
- Experience in technical mentorship/coaching is highly desirable.
- Understanding of AI/ML algorithms is a plus.
Job Description:
Engage in code design, testing, integration, deployment, and enhancements
Write high-quality code and take responsibility for tasks
Solve performance bottlenecks
Communicate and collaborate with product manager, QA, and UI/UX teams
Deliver with quality, on-time in a fast-paced start-up environment
Have a strong sense of code quality
Candidate Profile:
Bachelor’s/Master’s degree in Engineering, Computer Science (or equivalent experience)
At least 5+ years of relevant experience as a back-end engineer
Excellent Java and object-oriented development skills
Experience in building and scaling microservices
Strong problem-solving skills, technical troubleshooting, and diagnosing
Solid knowledge of RDBMS and NoSQL technologies
Experience in developing back-ends for enterprise systems
Knowledge of debugging performance and optimization techniques
Experience in Java, Mongo, MySQL, AWS technologies, ELK stack, Spring boot, Kafka
Good knowledge of cloud technologies eg. AWS
Demonstrated ability to deliver in a fast-paced environment
• Experience in the financial domain preferred.
• Hands-on developer in Core Java with an excellent understanding of computer science fundamentals, data structures, algorithms and design patterns.
• Experience with frameworks like Spring, Restful Webservices, Queuing systems, Angular, and Python is highly desired.
• Deep understanding of several cloud providers such as AWS, Azure, Google etc.
• Hands-on experience developing CI/CD pipelines for continuous development and integration.
• Deep knowledge and experience of Java/J2EE and servers like Tomcat.
1. Strong knowledge in Front end scripting like EJS, JavaScript, Jquery.
2. Proficiency with fundamental front-end languages such as HTML, CSS.
3. Familiarity with JavaScript frameworks such as Angular JS, React, and Amber.
4. Proficiency with server-side languages such as Python / Ruby / Java / PHP/ .Net.
5. Good Understand with database technology such as MySQL, Oracle, and MongoDB.
An ideal candidate must possess excellent Logical & Analytical skills. You will be working in a team as well on diverse projects. The candidate must be able to deal smoothly and confidently with the Clients & Personnel.
Key roles and Responsibilities:
⦁ Able to design and build efficient, testable and reliable code.
⦁ Should be a team player sharing ideas with the team for continuous improvement and development process.
⦁ Good Knowledge on Spring Boot, Spring MVC, J2EE and SQL Queries.
⦁ Stay updated of new tools, libraries, and best practices.
⦁ Adaptable, Self-Motivated, must be willing to learn new things.
⦁ Sound Good knowledge on HTML, CSS, JavaScript.
Basic Requirements:
⦁ Bachelors' Degree in Computer Science Engineering / IT or related discipline with a good academic record.
⦁ Excellent communication skills and interpersonal skills.
⦁ Knowledge on SDLC flow from requirement analysis to deployment phase.
⦁ Should be able to design, develop and deploy applications.
⦁ Able to identify bugs and devise solutions to address and resolve the issues.
Swift is building a next generation checkout stack for India - a platform rolling up payments and logistics solution for all fulfillment needs. We give businesses the opportunity to provide a customer experience at par with the likes of Amazon and Flipkart, all the while saving money and time.
Its basically Amazon without the website listing - we let our sellers design their own sales channel :-)
We believe there are many things a seller or small business has to worry about when selling online, logistics/payments/etc shouldn't be one of them. With our solution, SMBs and D2C brands get access to technologies and services like next day delivery, same day delivery, live package tracking, Card/Cash on delivery, scheduled delivery etc, making parcel delivery just as simple as collecting payment.
We also provide robust APIs which makes it easy for developers to add shipping capabilities to their multichannel online store.
We want to be the #1 checkout platform that’s reliable, easy to use and affordable.
About you:
You have experience in Java/Scala/JVM based languages and have an understanding of server design and implementation. You are looking for challenges in growing a product from hundreds to millions of visitors per month making thousands of transactions a day.
You like working with streaming/reactive architectures and have experience/interest in setting up MongoDB based cloud infra from scratch. You generally prefer to use a minimal set of simple tools to a diverse range of complex ones.
We are looking to build a back-end cloud infrastructure (on Java/Scala with Google Cloud Platform preferably) which will be a fault-tolerant real-time stream processing system on the cloud - Our system will need to meet liveliness guarantees from a web/API application perspective (and not a big data/ETL perspective).
You like to work on a variety of projects - at this job, you’ll be developing a complex backend API infra, a reactive streaming architecture and a cloud-native, highly available API for our customers.
You have:
Experienced in any JVM based language.
Have some experience in NoSQL and architecting APIs
Strong verbal and written communication skills and the ability to work well cross-functionally.
We offer:
You to be a part of a small, but a super capable team.
The opportunity to work closely with founders to define, scope, estimate and plan various aspects of the product. Being one of the first hires at Swift, you will be involved in both high and low-level decision making. This means a lot of ownership, which we cultivate by having a flat structure.
Competitive salary and stock options from a high-growth company.
Must Have
- 1+ to 6 year’s development experience in Java/J2EE Development.
- 1+ years’ experience in Spring, Hibernate.
- 1+ years’ experience in developing REST API’s
- 1+ years’ experience in developing Spring boot applications.
- Hands-On experience in Unit testing.
- Hands On experience in MVC frameworks –AngularJS/Angular7/8
- Understanding of Micro services.
- Understanding of Agile Methodologies.
- Working experience with DB technologies
- Strong analytical and problem-solving skills.
- Aptitude for innovation, working independently and thinking ‘outside of the box’.









