Senior Software Engineer

TechCorp London
Full-time Senior Level Technology
London, EC2A
Posted 2 days ago · Closes 15 June 2026
24 applicants so far
Ref: PT-ENG-2026-0447

About the Role

TechCorp London is seeking an experienced Senior Software Engineer to join our rapidly growing engineering division in the heart of London's tech district. This is a pivotal role within our flagship fintech product team, where you will have direct influence over architectural decisions and the opportunity to shape the technical direction of our next-generation platform.

You will be embedded within a cross-functional squad alongside product managers, designers and QA engineers, working in two-week sprints to ship high-quality features that serve over 500,000 business users. Our engineering culture is built on psychological safety, continuous learning and engineering excellence — you'll be expected to challenge the status quo and bring fresh perspectives to complex problems.

This is not a role for someone who wants to be told exactly what to do. We're looking for a self-directed, thoughtful engineer who can balance delivering at pace with maintaining code quality and best practices. You'll have meaningful autonomy over your work and genuine career progression into Staff or Principal Engineer levels.

Key Responsibilities

  • Design and implement scalable, resilient microservices using Node.js and TypeScript, deployed on AWS using ECS and Kubernetes
  • Lead technical design reviews, producing clear architectural decision records (ADRs) and presenting to senior stakeholders
  • Own end-to-end delivery of major product features — from technical specification through development, testing and deployment
  • Mentor and coach junior and mid-level engineers through pair programming, code reviews and technical workshops
  • Collaborate closely with the product and design teams to refine requirements and provide accurate delivery estimates
  • Champion engineering best practices including TDD, CI/CD, observability and security-first development
  • Participate in on-call rotation for production systems, with a clear escalation path and well-documented runbooks
  • Contribute to the engineering hiring process through technical interviews and take-home assessment reviews

Requirements & Skills

  • 5+ years of professional software engineering experience with at least 2 years at a senior level in a product-focused environment
  • Deep expertise in TypeScript and Node.js; strong understanding of asynchronous programming patterns and event-driven architectures
  • Proven experience with React (v18+) and modern frontend tooling, including testing with Jest and Playwright
  • Hands-on AWS experience: EC2, Lambda, ECS, RDS, SQS, SNS and CloudWatch; AWS Solutions Architect certification advantageous
  • Solid understanding of relational and NoSQL databases (PostgreSQL, DynamoDB) and query optimisation
  • Strong grasp of RESTful API and GraphQL design principles; experience with OpenAPI specification
  • Experience working in agile/scrum environments with a track record of consistent, high-quality delivery
  • Excellent written and verbal communication skills with the ability to present technical concepts clearly to non-technical stakeholders

What We Offer

Competitive salary of £75,000 – £95,000 plus annual performance bonus of up to 15%
EMI stock options with a 12-month cliff and 4-year vesting schedule — grow with us
30 days annual leave plus 8 bank holidays and an extra birthday day off
£2,500 per year learning and development budget for conferences, courses and certifications
Hybrid working: 2 days in our Shoreditch HQ, 3 days remote — flexible for school runs and personal commitments
Comprehensive health cover including dental, vision and mental health support via Bupa

About TechCorp London

Founded in 2014, TechCorp London is a leading B2B fintech company serving over 500,000 SMEs across the UK and Europe. Our cloud-native payments and cash management platform processes over £2 billion in transactions annually, helping businesses streamline their financial operations.

We're a team of 320 across London, Warsaw and Singapore, backed by top-tier VCs including Balderton Capital and Atomico. We've been named one of the UK's top 50 tech companies to work for three years running and are B-Corp certified, committed to having a net positive impact on society.

Our engineering team of 85 operates across 8 cross-functional squads, each with full ownership of their domain. We believe in giving engineers the tools, time and trust to do their best work.

TechCorp London Powering the future of business finance