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For Companies At a Glance
- Tasks: Design, build, and deploy full-stack features for a cutting-edge B2B SaaS platform.
- Company: Join an exciting early-stage AI company transforming corporate travel management.
- Benefits: Competitive salary, hybrid work model, and opportunities for rapid career growth.
- Why this job: Make a massive impact with your code at a pivotal moment in the company's journey.
- Qualifications: 4–7 years of full-stack software engineering experience, preferably in B2B SaaS.
- Other info: Be part of a small, dynamic team where your contributions are valued and visible.
The predicted salary is between 36000 - 60000 £ per year.
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)
- 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 / TypeScript (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.
Senior Software Engineer in London employer: FORT
Contact Detail:
FORT Recruiting Team
StudySmarter Expert Advice 🤫
We think this is how you could land Senior Software Engineer in London
✨Tip Number 1
Network like a pro! Reach out to people in the industry, attend meetups, and connect with potential colleagues on LinkedIn. You never know who might have the inside scoop on job openings or can refer you directly.
✨Tip Number 2
Show off your skills! Create a portfolio showcasing your projects, especially those that highlight your full-stack capabilities. This is your chance to demonstrate your expertise in React, Node.js, or Python — make it shine!
✨Tip Number 3
Prepare for interviews by practising common technical questions and coding challenges. But don’t forget to brush up on your soft skills too; being able to communicate your thought process is just as important as solving the problem.
✨Tip Number 4
Apply through our website! We’re always on the lookout for talented engineers who thrive in fast-paced environments. Your application will get the attention it deserves, and we can’t wait to see what you bring to the table!
We think you need these skills to ace Senior Software Engineer in London
Some tips for your application 🫡
Tailor Your CV: Make sure your CV reflects the skills and experiences that align with the Senior Software Engineer role. Highlight your full-stack capabilities, especially in React, TypeScript, Node.js, or Python, and don’t forget to mention any startup experience!
Craft a Compelling Cover Letter: Your cover letter is your chance to show us your personality and passion for the role. Share why you’re excited about working in a fast-paced environment and how you thrive in ambiguity. Let us know what makes you a great fit for our team!
Showcase Your Projects: If you've worked on relevant projects, whether personal or professional, make sure to include them. We love seeing real examples of your work, especially if they demonstrate your ability to build from scratch and deliver impactful features.
Apply Through Our Website: We encourage you to apply directly through our website. It’s the best way for us to receive your application and ensures you don’t miss out on any important updates. Plus, it shows us you’re keen to join our team!
How to prepare for a job interview at FORT
✨Know Your Tech Stack
Make sure you’re well-versed in the technologies mentioned in the job description, like React, TypeScript, Node.js, and Python. Brush up on your full-stack capabilities and be ready to discuss how you've used these technologies in past projects.
✨Showcase Your Impact
Prepare examples of how your contributions have made a difference in previous roles. Since this company values ownership and impact, be ready to explain how your work has directly influenced project outcomes or improved processes.
✨Embrace Ambiguity
This role is all about thriving in fast-paced environments with a bit of uncertainty. Think of instances where you’ve successfully navigated ambiguity and delivered results. Share these stories to demonstrate your adaptability and problem-solving skills.
✨Engage with the Team
Since you'll be working closely with product and leadership, show your enthusiasm for collaboration. Ask insightful questions about their current projects and express your eagerness to contribute to the team’s success. This will highlight your team-oriented mindset.