Staff Software Engineer - Flights in London

Staff Software Engineer - Flights in London

London Full-Time 70000 - 90000 £ / year (est.) Home office (partial)
United States Digital Space LLC

At a Glance

  • Tasks: Own the entire lifecycle of software features, from design to deployment and impact measurement.
  • Company: Join a fast-growing tech company with a collaborative and innovative culture.
  • Benefits: Enjoy competitive salary, health benefits, remote work options, and professional development opportunities.
  • Other info: Dynamic environment with excellent career growth and mentorship opportunities.
  • Why this job: Make a real impact on customer experiences while working with cutting-edge technology.
  • Qualifications: Experience in software development, team collaboration, and a passion for problem-solving.

The predicted salary is between 70000 - 90000 £ per year.

Are you a Software Engineer who thrives on real ownership? At the company, we know that we feel most fulfilled when we can own the problem and the solution. This means taking responsibility for the entire lifecycle of a feature, from being part in understanding what our customers' pains are with our product team, design documents, coding to deployment, and measuring impact. You will see how your technical decisions move the needle for our customers daily.

We prioritize autonomy and pragmatism, giving you the space to solve complex problems without unnecessary friction. Engineering excellence here is measured by the reliability and simplicity of the systems you build to power a global platform.

Join the Flights team. Flights is one of the company's fastest-growing engineering areas — expanding from one team to four since 2025, with more growth ahead. The domain is genuinely complex. A single flight booking involves far more steps, suppliers, and failure modes than most people realise. Our job is to hide that complexity and deliver a seamless customer experience. We're not there yet — and that's the opportunity.

You'll be working across mission-driven teams tackling core platform reliability, self-serve post-booking, booking error recovery, and airline inventory scaling. Each team is cross-functional, so you'll work alongside product, design, and operations — not just engineers. We know where we want to get to. We don't have all the answers for how to get there — and we want the people we hire to help us figure that out.

At the company, we believe the best work happens when great people come together in small teams with a shared sense of purpose. Each team has real ownership of its domain, a genuine say in what gets built, and the autonomy to make it happen. We care about impact, and we trust our people to deliver it.

AI is embedded in how we work and what we build. On the engineering side, it spans the whole workflow: our Notion, Jira, GitHub and Slack are AI-connected so you get up to speed fast, and day-to-day it helps with specifying features, writing and reviewing code, and automated AI PR review on every pull request. When something goes wrong in production, AI surfaces context across systems quickly. We also embrace agentic coding, using AI as an active collaborator, not just a prompt-by-prompt co-pilot.

We expect candidates to use AI tools in our coding interviews. The bar is understanding your code and owning what you produce. That reflects how we work every day.

What it means to be a staff engineer at the company:

  • Own the technical vision across teams. You’ll work across multiple teams to coordinate a shared technical direction. This means contributing to the creation of annual and quarterly plans in collaboration with product managers, engineering managers, and other engineers — and translating that into clear, actionable priorities that teams can work to today.
  • Be hands‑on, with purpose. Staff engineers at the company are mostly hands‑on — spending the majority of their time actively contributing within one or two teams, and the rest mentoring engineers, unblocking delivery, and working with dependent teams to move shared projects forward. You won't be pulled into excessive meetings or committees with a focus on impactful collaboration.
  • Shape how we work, not just what we build. You’ll take higher‑level business goals and turn them into engineering approaches. That means proposing the shape of annual objectives, identifying architectural changes needed for scale, and making sure the team is investing its energy where it counts most — not just staying busy.
  • Raise the bar for everyone around you. Staff engineers are mentors and multipliers. You'll support engineers through direct mentorship, design reviews, and pairing. You'll help explain technical complexity to the wider business — including why certain things take the time they do — and help the whole team level up their skills to better apply them to the domain.
  • Lead across boundaries. Your influence won't stop at your own team. You'll coordinate across squads, contribute to engineering initiatives, and drive alignment across the broader organisation. When there are dependencies or blockers, you'll be the one connecting the dots.

Desired skills and experience:

  • Product engineering mindset: you work end to end — from understanding customer problems alongside product, through to deployment and measuring impact. Technical skill alone isn't enough; you need to be able to own a problem fully.
  • Cross‑team technical leadership: proven experience coordinating significant, multi‑team technical initiatives where you've had to manage dependencies, align stakeholders, and keep a longer‑horizon project moving.
  • Architectural judgment: ability to design scalable, evolvable systems and articulate a clear technical roadmap — balancing long‑term thinking with pragmatic, near‑term delivery.
  • “You build it, you run it” experience: you've run your own services — monitoring, testing, rolling out, and operating them in production. The tools may differ; the mindset shouldn't.
  • Domain complexity: experience working in a domain with significant underlying complexity — ideally flights or travel, but also fintech or any industry where you've had to build reliable, customer‑facing products on top of messy, constrained underlying systems.
  • Backend‑heavy, full‑stack comfortable: our stack is roughly 80% backend, 20% frontend. You should be comfortable across both, with the depth in backend systems. We use Python and AWS; we're open to people who've used different tools, as long as they can demonstrate they learn quickly.
  • Operational maturity: experience leading observability and reliability practices; defining SLOs, handling incidents, and conducting blameless post‑mortems.
  • Mentorship and influence: a track record of levelling up engineers around you through mentorship, design reviews, and by modelling what great engineering looks like.
  • AI‑driven development: experience with — or a strong interest in — modern AI‑augmented workflows, including agentic coding and AI‑assisted code review.

At the company, we take an IRL‑first approach to work, where our team works together in-person 3 days a week. As such, this role requires you to be based within commuting distance of our hubs. We fundamentally believe in the value of meeting in real life to improve connectivity, productivity, creativity and ultimately making us a great place to work.

For certain roles, we can help with relocation from anywhere in the world, English is the official language at the office. Please submit your resume in English if you choose to apply. Do not forget to submit an updated portfolio and/or resume.

The company is a global company with a diverse customer base, and we want to make sure the people behind our product reflect that. We’re an equal opportunity employer, which means you’re welcome at the company regardless of how you look, where you’re from, or anything else that makes you, well, you.

Staff Software Engineer - Flights in London employer: United States Digital Space LLC

At our company, we pride ourselves on fostering a culture of ownership and collaboration, where Staff Software Engineers can thrive in a dynamic environment that prioritises autonomy and impactful work. With a focus on mentorship and cross-functional teamwork, you'll have the opportunity to shape technical direction while contributing to innovative solutions in the fast-paced Flights domain. Our commitment to in-person collaboration three days a week enhances connectivity and creativity, making this an exceptional place for professional growth and meaningful contributions.

United States Digital Space LLC

Contact Details:

United States Digital Space LLC Recruitment Team

StudySmarter Expert Advice🤫

We think this is how you could land Staff Software Engineer - Flights in London

Join Local Tech Meetups

Get out there and mingle with fellow developers by joining local tech meetups. It’s a fantastic way to meet people who might be working at United States Digital Space LLC or know someone who does. Plus, you can pick up some trendy tech skills and trends while you're at it!

Contribute to Open Source Projects

Show off your coding chops by jumping into open-source projects. Not only does this give you practical experience, but it also gets you noticed in the dev community. You'll create a killer portfolio that speaks volumes about your skills to United States Digital Space LLC.

Tap into Online Developer Communities

Don’t underestimate the power of online developer communities like GitHub, Stack Overflow, and even Reddit. Participate in discussions, share your projects, and build your visibility. We can often find opportunities through these channels that can lead to a full-time gig at companies like United States Digital Space LLC.

Explore Job Boards Specifically for Tech Roles

Keep your eyes peeled on job boards that focus on tech roles. Sites like TechCareers or Stack Overflow Jobs can often have listings for companies like United States Digital Space LLC that might not show up on broader job sites. Make it a habit to check these regularly, and don’t hesitate to apply directly through our website!

We think you need these skills to ace Staff Software Engineer - Flights in London

Software Engineering
Technical Leadership
Cross-Team Coordination
Architectural Design
Scalable Systems Design
Production Monitoring
Backend Development

Some tips for your application 🫡

Show off your coding skills:When applying for a software engineering role, it's super important to showcase your coding skills. Make sure your CV includes your tech stack, any relevant programming languages you’re comfortable with, and examples of projects you've worked on. If you have a GitHub profile, link it up! We love to see code in action.

Tailor your portfolio:For a full-time role, we’d expect to see some solid examples of your work in your portfolio. Make sure to include at least two or three projects that highlight your problem-solving skills and your ability to work with different technologies. Focus on the projects that are most relevant to the position at United States Digital Space LLC.

Craft a killer cover letter:Your cover letter is your chance to stand out—make it personal! Explain why you want to work at United States Digital Space LLC and how your skills align with the role. Show us your passion for software development. We dig enthusiastic candidates who understand the value of collaboration and continuous learning!

Be clear and concise:When it comes to writing your CV and cover letter, clarity is key. Avoid jargon that could confuse us and stick to simple, direct language. Highlight your achievements with quantifiable results where possible, and keep everything easy to read. A well-organised application goes a long way!

How to prepare for a job interview at United States Digital Space LLC

Brush Up on Your Coding Skills

For a full-time software engineering role, it's crucial that we stay sharp with our coding abilities. Expect technical questions that might involve solving problems on the spot or discussing algorithms. Practise on platforms like LeetCode or HackerRank to get comfortable with the types of questions that often come up.

Know Your Tools and Frameworks

Make sure we’re well-acquainted with the tools and technologies listed in the job description. Familiarise ourselves with any specific frameworks or programming languages mentioned. If United States Digital Space LLC uses React or Node.js, for instance, be ready to discuss how we’ve used them in previous projects or coursework.

Showcase Your Projects

Bring along a portfolio that highlights our best work. This could be code samples, GitHub repositories, or any side projects we’ve built. Make sure we can talk through our thought process for each project, especially the challenges we faced and how we solved them—this shows our problem-solving skills in action.

Prepare for Behavioural Questions

While technical skills are key, full-time positions also require cultural fit. Be ready to discuss our previous experiences and how we handle teamwork, conflict, and deadlines. Brush up on the STAR method—Situation, Task, Action, Result—to clearly articulate our past experiences when discussing how we've contributed to a team.