– Full-stack Software Engineer (AI-Native)

Company: One of our portfolio companies (Cross-Border Fintech)

Location: Mumbai (Onsite)

Type: Full-time

Experience: ~3 years

About the Company

One of our portfolio companies is a fast-growing fintech in the cross-border payments space, building modern infrastructure that simplifies and accelerates global trade transactions. Led by seasoned operators, the company is scaling rapidly, solving complex 0-to-1 challenges, and building the banking rails that let Indian exporters collect and move money across the world. This is a rare chance to build core systems from India, for the world.

About the Role

We are looking for a Full-stack Software Engineer with around 3 years of experience to build across the stack and ship product systems end-to-end. This is a build role, not a maintenance role: the systems that will run this business are being written now, and you will write a lot of them, from merchant onboarding and compliance automation to collections logic and the internal tooling that lets a small team move like a large one.

The company operates AI-native. You will be expected to build with AI tools as a first instinct, using them to design, prototype, test, and ship faster than a conventional team would. They would rather have one solid generalist who ships product systems with AI leverage than three specialists who each own a slice.

Key Responsibilities

- Build product systems end-to-end, from database and API through to the interface, owning the whole path rather than an isolated component.
- Ship with AI leverage across the build cycle: prototyping, code generation, testing, and iteration.
- Own reliability, security, and quality of systems that move money and handle compliance-sensitive data.
- Work across the stack and beyond it, picking up adjacent operational, data, and automation tasks when the moment needs it.
- Translate business problems into practical systems,



working closely with founders and the go-to-market team.
- Execute independently on ambiguous problems with minimal hand-holding, communicating clearly on progress and tradeoffs.

Must-Have Skills & Experience

- ~3 years of software engineering experience with strong, hands-on full-stack coding ability.
- Habitual use of AI tools and workflows in building, with real examples of what you have shipped faster because of it.
- Experience building product systems, not just isolated features – you think about how the pieces fit together.
- Comfort operating in a fast-moving, ambiguous startup environment where scope and priorities shift.
- A smart-generalist profile: you would rather own a problem across boundaries than defend a narrow specialization.
- Strong ownership, execution, and communication skills, with a practical, business-oriented approach to problem solving.

Required Tech Stack

- Backend: Python / Django.
- Frontend: React, TypeScript, HTML, CSS frameworks.
- RESTful API design and development.
- Databases: PostgreSQL / MySQL.
- Docker containerisation.
- Solid system-design and microservices fundamentals, security and data-protection practices, and clean coding with Git / version control.

Preferred

- Prior experience at an early-stage startup or in a 0-to-1 product build.
- Exposure to fintech, payments, or other compliance-sensitive, mission-critical systems.
- Agile and CI/CD exposure, scalable system-design experience, and familiarity with collaboration / PM tools (Jira, Asana, Trello).

Why Join?

- Build the core systems of a licensed cross-border trade bank while they are still being written.
- Direct access to the founding team – you help decide what gets built, not just how.
- An AI-native environment deliberately structured to let a small team of strong builders outperform a large one.
- Meaningful ownership and upside, and a genuine seat in a 0-to-1 story building from India for the world.

Interested, or know someone who fits? Comment or DM us.

📌 Full Stack Engineer (Mumbai)
🏢 Reasoned.
📍 Mumbai