Backend Developer Intern

• *About Kwill**

Kwill is the client portal for the world's service businesses — a SaaS platform used by freelancers, small studios, and independent professionals across 40\+ countries. We're building the alternative to HoneyBook, Dubsado, and Bonsai. Our team is small, based in Amritsar, with the founding team in Waterloo, Canada. Launching July 2026\.

• *About the Role**

We're hiring a Backend Developer Intern to help ship Kwill's API layer, database work, payment integrations, and webhook handlers. You'll work alongside our Backend Developer and directly with the founder — writing real code that handles real user data and real payments, not tutorials.

Kwill is a two\-sided B2B SaaS: a freelancer\-facing dashboard and a client\-facing portal, sharing one Postgres database with Row\-Level Security. You'll touch every part of that — from Stripe webhook handlers that mark invoices as paid, to Supabase queries that scope data by tenant, to transactional email flows that deliver proposals and contracts.

Our stack: **Next.js 14 (API routes), TypeScript, Supabase (PostgreSQL \+ RLS), Clerk (auth), Stripe (billing), Resend (email), Vercel.** If you've built a couple of full\-stack projects — even small ones — you're ready to apply.

• *Responsibilities**

• Build and maintain Next.js API routes for the freelancer dashboard and client portal
• Write Supabase queries scoped by tenant, with proper RLS awareness
• Work on Stripe integrations — checkout, subscriptions, webhooks, refunds
• Handle transactional email flows via Resend (proposal sent, invoice paid, receipt)
• Contribute to database migrations and schema changes
• Write PDF generation flows (proposals, contracts, invoices)
• Debug production issues — read logs, replay webhooks, fix data
• Ship at least one meaningful backend feature per week

• *Requirements**

• Working knowledge of Node.js and TypeScript (or JavaScript with willingness to learn TS)
• Understanding of REST API design — routes, methods, status codes, JSON payloads
• Familiarity with SQL and relational database basics — joins, indexes, foreign keys
• Comfort with async / await, error handling, and promises
• Basic Git workflow — branching, PRs, resolving simple merge conflicts
• Ability to work full\-time in Amritsar (in\-person, not remote)
• A GitHub profile or 1–2 code samples showing what you can build

• *Nice to Have**

• One or two full\-stack projects deployed and running (Vercel, Railway, Fly, etc.)
• Experience with Next.js API routes or serverless functions
• Familiarity with PostgreSQL — queries, migrations, indexes
• Experience with Supabase, Firebase, or another BaaS
• Understanding of authentication flows (JWT, sessions, OAuth)
• Any Stripe integration experience — checkout, webhooks, or payment intents
• Basic understanding of Row\-Level Security or multi\-tenant architecture
• Any open\-source contributions

• *What We Offer**

• Real production backend code shipping to real users from week one
• Direct mentorship from our Backend Developer and weekly 1:1s with the founder
• Full ownership of the features you build — you'll drive them from schema to deploy
• Working hours: Mon–Fri 12:30 PM – 7:30 PM IST, Sat 1:00 PM – 6:00 PM IST
• 1 paid leave day per month plus public holidays
• 3\-month probation period

• *Interview Process**

30\-minute video call with the founder. Come ready to walk through your GitHub or a project you've built — how you designed the data model, what you'd change, what you struggled with.

• *How to Apply**

Email a short note about why this role, along with

• Your GitHub profile (or 1–2 links to code samples)
• A backend or full\-stack project you've deployed
• Which parts of the Kwill stack you already know

Send to **hello@getkwill.com** with subject line: **"Backend Developer Intern — \[Your Name]"**.

Pay: ₹18,000\.00 \- ₹23,000\.00 per month

Benefits

• Paid sick time
• Paid time off

Work Location: In person