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Senior Software Engineer

Job in Greater London, London, Greater London, W1B, England, UK
Listing for: FORT
Part Time position
Listed on 2026-02-15
Job specializations:
  • Software Development
    Software Engineer, Full Stack Developer
Salary/Wage Range or Industry Benchmark: 125000 - 150000 GBP Yearly GBP 125000.00 150000.00 YEAR
Job Description & How to Apply Below
Location: Greater London

Senior Software Engineer – Hybrid (1–2 days per week onsite)

An opportunity to join one of the most exciting early-stage AI companies operating at the intersection of enterprise SaaS, data, and corporate travel.

The client is the AI-powered Mission Control for Corporate Travel — enabling global enterprises to manage $50M–$1B travel budgets with real-time data, accountability, and cost optimisation.

Backed by Series A funding and signing enterprise contracts bi-weekly (mid-to-high six figures on 3-year deals), this is a rare opportunity to join at just 25 employees — right at the inflection point of serious scale.

The Why? (Top 3 Reasons to Join)

1️⃣ Massive Impact at the Perfect Time

With just 25 employees split between Europe and the US, you’ll join at a stage where every line of code materially impacts enterprise customers managing over $4B in spend.

Trusted by world-leading companies representing over $4T in market value. Contracts are closing every two weeks. Product-market fit is proven — now it’s about scale.

You’ll own features end-to-end and demo your work to the entire company every Friday. Your contributions will be visible, valued, and directly tied to growth.

The What..

The client is looking for a Senior Software Engineer (4–7 years’ experience) to join their founding engineering team.

This is for builders.

  • People who thrive in ambiguity.
  • People who enjoy shipping fast.
  • People who want ownership, not tickets.
You’ll design, build, and deploy full-stack features across:
  • Frontend
  • Infrastructure

You’ll work closely with product and leadership to scale a high-performance B2B SaaS platform supporting enterprise clients across travel, fintech, and global corporates.

What They’re Looking For Seniority
  • 4–7 years’ experience in full-stack software engineering within B2B SaaS environments.
  • Experience
  • Startup experience — comfortable with velocity and ambiguity
  • Experience building from scratch
  • Travel tech or fintech experience preferred
Technical Skills
  • Strong full-stack capability
  • React / Type Script (frontend)
  • Node.js or Python (backend)
  • Experience with data pipelines, ETL, and analytics systems
Who Thrives Here
  • Autonomous builders
  • Engineers who enjoy demoing their work
  • Individuals comfortable self-managing their workload
  • People excited by fast growth and real responsibility
And finally... Who are we?

FORT – Future of Recruiting Technologists is a specialist technical search consultancy connecting exceptional engineers with transformative technology businesses.

We go beyond skills — focusing on ambition, trajectory, and cultural alignment to ensure long-term success for both candidate and client.

Our values are built on:

#J-18808-Ljbffr
Position Requirements
10+ Years work experience
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