Senior Full Stack Engineer

Role: Senior Full-Stack Engineer

Industry: B2B SaaS

Company Size: Under 150

Funding: Series A

Salary: £90,000 - £110,000 basic

Bonus: £10,000

Wedo has partnered with a B2B SaaS bases Series A start-up who’s built an AI KYC product which is impacting millions of people on a global scale. We’re looking for a Senior Full Stack Developer which is front end leaning and an expert in React. We need engineers who can do more than write clean code. We’re looking for people who think, communicate, collaborate, and grow themselves and others around them.

We need Engineers who can push product forward without drama, navigate ambiguity and are energised by being part of a high-trust, high-ownership engineering culture. This isn’t a role for feature-deliverers. It’s for individuals who can shape the way the team solves problems, communicates, and scales.

Role Overview – What You’ll Be Doing

You’ll help build & scale their platform, taking ownership across the UI, core services and the connective tissue between them. You’ll work closely with product, design, and other engineers to ship resilient features that serve high-signal customer value.

You Will:

• Build modern React interfaces + well-structured TypeScript code
• Develop backend services in Go (happy to look at people from Node, Go, Java, C#, Ruby or Python backend) who are willing to cross train to Go
• Design & consume RESTful APIs + microservice components
• Contribute to system performance, reliability, observability

About you as a person:

• Surface issues early instead of firefighting late
• Take ownership without needing permission first
• Communicate calmly especially when things don’t go right
• Challenge decisions thoughtfully, constructively
• Adapt communication to audience + context
• Give credit freely, share context proactively
• Continuously reflect, learn, and self-improve
• High standards + low ego = the winning pattern here.

Interview Process (Behaviour First, Then Technology)

Stage 1 – Behavioural Interview

Deep dive into ownership, communication, conflict, self-awareness.

Stage 2 – Technical: Front-End Leaning (45 mins, Zoom)

With Lead FE + Staff Engineer

Focus: React, TypeScript, product-thinking.

Final Stage – CTO Conversation

Alignment, motivation, scaling behaviours, team contribution.

Package

• £100–£110k
• 10% cash bonus
• £1,000 wellness & development allowance
• Trust-based unlimited holiday
• Competitive pension
• Hybrid: London office Tues + Thurs

To apply, please connect with Jack Cole and drop through a message as to why you feel you’re right for this role.

Hit quick apply today