Full Stack Engineer | C#, .NET, React

JR United Kingdom; Birmingham; On-site; GBP 50,000 - 100,000; Full time

Job summary

Join an ambitious early-stage start-up as a Full Stack Software Engineer. Work directly with experienced founders in a collaborative environment to rebuild infrastructure for a legacy industry using C#, .NET, React, and Azure. This role offers autonomy, involvement in strategy, and the chance to create products that users love.

Benefits

Meaningful equity

Fast-paced, collaborative startup environment

Qualifications

• Experience of 3+ years in full stack software engineering.
• Passion for building user-centric products.
• Experience in FinTech or B2B SaaS is advantageous.

Responsibilities

• Work across frontend and backend to develop software features.
• Engage in commercial decisions and product strategy.
• Provide end-to-end ownership of projects.

Skills

C#

.NET

React

Azure

Job description

Full Stack Software Engineer

SaaS | Early-Stage Start-Up | Experienced Founders | C# | .NET | TypeScript | React | Azure

I’m hiring a Full Stack Software Engineer to join one of the most ambitious, talented, and genuinely brilliant teams I’ve worked with. This is a rare opportunity to work directly with proven founders on an early-stage product with huge potential. They're rebuilding the infrastructure of a legacy industry from the ground up — no silos, no red tape.

Location: London

Working Policy: Onsite full-time — it's early stage, and the team gets massive value from in-person collaboration

Salary: Up to £100,000 (depending on experience) + meaningful equity — it's a brilliant time to join

Interview Process: 3 stages. We keep things fast, focused, and respectful of your time.

You'll be a Full Stack Software Engineer in a small, fast-paced team, working across frontend and backend to ship real features using C#, .NET, React, and Azure. You must be confident across the stack — this role offers real autonomy and end-to-end ownership.

This isn’t just an engineering role. You’ll be actively involved in commercial decisions, product strategy, and user conversations — not just handed tickets.

• Mid–Senior Full Stack Software Engineers — while we don’t fixate on years, 3+ years' experience is typically what we'd expect. We need engineers to hit the ground running.
• Strong across C#, .NET, and React
• Passionate about building great products users actually love. Experience in FinTech or B2B SaaS would be highly advantageous but by no means an essential.
• Excited by early-stage, in-office startup life
• Hungry to build something with lasting impact

You’ll work closely with founders, shaping both product and business from the inside. If you're a Full Stack Software Engineer who wants real ownership, fast learning, and to build with C#, .NET, React, and Azure — apply now.