Fullstack Developer

About the Role

SwitchKart is on a mission to make technology more accessible and more sustainable — we're in the business of recommerce, giving old smartphones a second life, cutting down e-waste, and extending the lifecycle of every device we touch.

We're looking for a Senior Full Stack Developer to help us build and scale the ecosystem of platforms powering this mission — from our procurement app to our retailer app, pricing engines, and warranty systems. You'll take ownership of complex features end-to-end, mentor junior engineers, and make architectural decisions that shape how we grow.

What You'll Do

• Own Features End-to-End: Design, build, and ship full stack features across our procurement, retailer, pricing, and warranty platforms — from database schema to UI polish.

• Drive Architecture: Make key technical decisions on system design, scalability, and code structure as our ecosystem of apps grows.

• Build AI-First: Design and build systems with AI at the core — not bolted on. Think about where AI can automate, assist, or enhance the products you're building from day one.

• Build Scalable Architecture: Build and monitor a highly performant, failure-resistant platform — we take pride in doing this with a small, high-ownership team.

• Automate and Integrate: Develop tools that automate our integration processes and build data pipelines across our app ecosystem.

• Foster Technical Excellence: Champion unit and integration testing and lead meaningful code reviews across the team.

• Prototype and Validate: Create interactive prototypes to prove out technical concepts and participate in pilots for new initiatives.

• Mentor the Team: Guide junior developers through code reviews, pairing, and technical direction.

• Report Upward: Provide regular updates to management on milestones, risks, issues, and mitigation plans.

• Collaborate Cross-Functionally: Work closely with product and design to translate requirements into robust technical solutions across multiple products.

What We're Looking For

Must Have

• 4+ years of full stack development experience

• Strong proficiency in React and Node.js

• Solid experience with PostgreSQL or MySQL — schema design, query optimisation

• Experience designing and scaling production systems

• Experience deploying and managing applications on a cloud platform (AWS/GCP or similar)

• Comfortable owning a feature from concept to deployment

• Strong debugging and problem-solving skills

Good to Have

• Experience mentoring or leading junior engineers

• Track record of driving scalability and time-to-market in past cloud architecture decisions

• Exposure to CI/CD pipelines

• Experience with Docker, NoSQL databases, or distributed caching

• Experience integrating third-party REST/SOAP APIs

• Experience in a fast-moving startup environment

Why SwitchKart

• Real ownership over architecture and technical direction.

• Access to the latest AI coding agents and tools — we invest in keeping our engineers on the cutting edge.

• Work on a genuinely differentiated business with measurable impact.

• Be part of a lean team where your decisions shape the product.

• Opportunity to mentor and grow the engineering team.

About us

Cere Labs is a Mumbai based company working in the field of Artificial Intelligence. It is a product company that utilizes the latest technologies such as Python, Redis, neo4j, MVC, Docker, Kubernetes to build its AI platform. Cere Labs’ clients are primarily from the Banking and Finance domain in India and US. The company has a great environment for its employees to learn and grow in technology.

Software Developer

Job brief

Cere Labs is seeking to hire a skilled and passionate software developer to help with the development of our current projects and product. Your duties will primarily revolve around building software by writing code, as well as modifying software to fix errors, improve its performance. You will also be involved in writing of the test cases and testing

To be successful in this role, you will need extensive knowledge of programming languages like Java, Python, Java Script, React. 

Ultimately, the role of the Software Engineer is to build high-quality, innovative and fully performing software that complies with coding standards and technical design

Responsibilities

• Develop flowcharts, layouts and documentation to identify requirements and solutions
• Write well-designed, testable code
• Develop software verification plans and quality assurance procedures
• Document and maintain software functionality
• Troubleshoot, debug and upgrade existing systems
• Deploy programs and test the deployed code
• Comply with project plans and industry standards

Requirements

• BE (CS/IT) degree in Computer Science
• Ability to understand the requirements given and generate the design based on specification given.
• Ability to develop unit testing of code components or complete applications.
• Must be a full-stack developer and understand concepts of software engineering.
• Ability to develop software in Python, Java, Java Script 
• Excellent knowledge of relational databases, MySQL and ORM technologies (JPA2, Hibernate), in-memory data stores such as Redis
• Experience developing web applications using at least one popular web framework (JSF, Spring MVC, React) is preferred
• Experience with test-driven development
• Proficiency in software engineering tools including popular IDE’s such as PyCharm, Visual Studio Code and Eclipse
• Proven work experience as a Software Engineer or Software Developer will be an added advantage

Working conditions

Hours: 9:00 AM to 6:00 PM

Weekly off: Sunday, First and Third Saturdays

Mode: Work from office

Recruitment process

The selection process includes:

1. Written test
2. Technical interview
3. Final interview

Compensation

CTC: Rs. 3-4 lacs pa, depending on performance in the selection process.

Senior Software Engineer.

• A degree in Data Science, Artificial Intelligence, Computer Science, or a related field
• Strong proficiency in Python, with a solid understanding of object-oriented programming principles.
• Proven experience in developing applications powered by Large Language Models (LLMs).
• Demonstrated experience in building and maintaining robust ETL (Extract, Transform, Load) data pipelines.
• Ability to build full-stack applications using JavaScript; experience with modern frameworks like React and Next.js is highly desirable.
• A pragmatic and self-starting individual, capable of executing tasks effectively with minimal supervision.
• Experience developing modern frontend applications, with specific expertise in using Web Components.
• Knowledge of simulation principles and discrete optimisation techniques.
• Relevant professional certifications in AI, Machine Learning, or cloud platforms are a plus.

Experience

• Proven track record building AI (e.g. LLM-powered solutions, Agent-Based Applications), data science, or numerical computing projects end-to-end—from initial concept through to deployment and maintenance.
• Extensive hands-on experience (4+ years) with core technologies, including:
• Advanced Python, utilising libraries such as NumPy, Pandas, and frameworks for multiprocessing and asynchronous programming.
• Relational database management systems.
• Development and deployment within Linux environments.
• Collaborative development workflows using Git.

Why This Role Matters

• We are looking for a Staff Engineer to lead the technical direction and hands-on development of our next-generation, agentic AI-first marketing platforms. This is a high-impact role to architect, build, and ship products that change how marketers interact with data, plan campaigns, and make decisions.

What You'll Do

• Build Gen-AI native products: Architect, build, and ship platforms powered by LLMs, agents, and predictive AI
• Stay hands-on: Design systems, write code, debug, and drive product excellence
• Lead with depth: Mentor a high-caliber team of full stack engineers.
• Speed to market: Rapidly ship and iterate on MVPs to maximize learning and feedback.
• Own the full stack: From backend data pipelines to intuitive UIs—from Airflow to React - from BigQuery to embeddings.
• Scale what works: Ensure scalability, security, and performance in multi-tenant, cloud-native environments (GCP).
• Collaborate deeply: Work closely with product, growth, and leadership to align tech with business priorities.

What You Bring

• 8+ years of experience building and scaling full-stack, data-driven products
• Proficiency in backend (Node.js, Python) and frontend (React), with solid GCP experience
• Strong grasp of data pipelines, analytics, and real-time data processing
• Familiarity with Gen-AI frameworks (LangChain, LlamaIndex, OpenAI APIs, vector databases)
• Proven architectural leadership and technical ownership
• Product mindset with a bias for execution and iteration

Our Tech Stack

• Cloud: Google Cloud Platform
• Backend: Node.js, Python, Airflow
• Data: BigQuery, Cloud SQL
• AI/ML: TensorFlow, OpenAI APIs, custom agents
• Frontend: React.js

What You Get

• Meaningful equity in a high-growth startup
• The chance to build global products from India
• A culture that values clarity, ownership, learning, humility, and candor
• A rare opportunity to build with Gen-AI from the ground up

Who You Are

• You’re initiative-driven, not interruption-driven.
• You code because you love building things that matter.
• You enjoy ambiguity and solve problems from first principles.
• You believe true leadership is contextual, hands-on, and grounded.
• You’re here to build — not just maintain.
• You care deeply about seeing your products empower real users, run reliably at scale, and adapt intelligently with minimal manual effort.
• You know that elegant code is just 30% of the job — the real craft lies in the engineering rigour, edge-case handling, and production resilience that make great products truly dependable.