Full Stack Backend Developer - Tech Lead

Job highlights

• 8+ years development experience with 5+ years full stack in Node.js, React, TypeScript, strong Next.js and PostgreSQL skills, experience with CRM or lending systems
• Own and maintain CRM platform, build integrations with Twilio WhatsApp API, SendGrid, manage PostgreSQL database, handle deployments and production issues, mentor developers
• Competitive base salary with 20 paid holidays and monthly team events

About Welcome Finance

Welcome Finance is a London-based FinTech helping businesses in the UK and Ireland access tailored business finance. Our in-house CRM and platform manage the full loan journey, from enquiry and customer communication to lender matching and funding.

Role Overview

We are looking for a senior, hands-on developer to take complete ownership of our live CRM platform, built on Next.js, React, TypeScript, Node.js and PostgreSQL. You will be our main developer: maintaining and improving the system, building new features, and able to design a CRM of this kind from scratch if needed. You will work directly with the management team in our Delhi office. This is a long-term role for someone who wants to stay and grow with us.

Key Responsibilities

• Own our CRM end to end: lead management, staff roles and permissions, telecaller assignment, lender matching, reports and customer portal
• Build and maintain integrations for WhatsApp (Twilio WhatsApp Business API), SMS (Twilio) and email (SendGrid and Google Workspace), including webhooks
• Manage the PostgreSQL database: schema design, safe migrations, backups and performance
• Manage authentication and role-based access control, and keep customer and financial data secure (UK GDPR)
• Handle deployments (Netlify, GitHub) and fix production issues quickly
• Write clean, documented, tested code
• Guide and mentor developers as the team grows

What We Look For

Core Requirements:

• 8+ years of development experience, including 5+ years full stack in Node.js, React and TypeScript
• Strong Next.js experience in production
• Strong PostgreSQL skills
• Experience with REST APIs, webhooks and third-party integrations
• Experience taking over and maintaining an existing live system
• Built or worked on a CRM, lead management, ERP or lending system
• Uses AI coding tools (Claude, Cursor, Copilot) responsibly, reviewing and testing every change
• Stable career history, with at least one role of 3+ years at a single company

Preferred:

• Twilio (SMS/WhatsApp), SendGrid, Clerk, Neon or Netlify experience
• Fintech, lending or financial services background
• Experience mentoring or leading developers

Mindset & Soft Skills:

• Ownership: you treat the platform as your own
• Long-term commitment: youre looking for a stable role, not a short stop
• Clear communication: you can explain technical issues simply
• Reliability: available for urgent issues during UK hours when needed

Position Details & Benefits

• Location: Prime office location in West Delhi (5 days a week in-office).
• Compensation: Competitive base salary
• Perks: 20 paid annual holidays, monthly team events, and an environment with zero red tape.