Startups

How to get a job at Improbable

20 real interview questions, insider tips on the hiring process, and what Improbable actually looks for. Most people read about it. Very few practise for it.

London, UK 600+ 4.2/5 (based on recent reviews)/5 Glassdoor
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Your question

Tell me about yourself and what makes you a strong candidate for this role.

30s preparation 2 min recording Camera + mic

About Improbable

Company overview

Improbable is a technology company developing simulation software and computational platforms for enterprise applications. The company's core technology enables large-scale simulations and complex system modelling for industries including logistics, infrastructure, and defence.

Founded in 2012, Improbable combines cutting-edge distributed computing with sophisticated simulation capabilities, serving complex global enterprises.

Inside the company

Culture & values at Improbable

Improbable's culture emphasises technical excellence, innovation, and solving complex computational challenges. The organisation values intellectual curiosity, collaborative problem-solving, and pushing boundaries in simulation technology. Staff are encouraged to contribute ideas and take ownership of technical challenges.

The culture is fast-paced, intellectually demanding, and entrepreneurial, reflecting the startup phase of a technically sophisticated company.

Why people want to work here

Improbable offers careers for software engineers, distributed systems specialists, and technical experts. Employees work on cutting-edge simulation and distributed computing technology with significant real-world applications. The company offers competitive salaries, equity, professional development, and the opportunity to work on complex technical challenges.

What to expect

Working at Improbable

The working environment at Improbable reflects the startups sector — structured but dynamic, with a mix of planned project work and responsive tasks. Most roles involve regular collaboration with colleagues across different teams and functions, with clear expectations for deliverables and timelines. Flexible and hybrid working arrangements are increasingly common, and the organisation recognises that different roles require different working patterns.

As a 600+-person organisation, Improbable offers the chance to make a visible, measurable impact. Teams are small and close-knit — you'll know most of your colleagues by name within your first few weeks. The flip side of a smaller organisation is that you may need to wear multiple hats, but many people find this variety energising and a faster route to building broad experience.

The culture at Improbable shapes how the day feels beyond just the work itself. Colleagues describe the environment as one that values Software Engineering Excellence and Technical Depth. Lunch breaks, team socials, and informal catch-ups are part of the rhythm — Improbable recognises that building relationships across the organisation is as important as the deliverables themselves. Most employees report that the people are one of the best things about working here, and that the team dynamic makes challenging work feel manageable.

The hiring journey

Improbable interview process

Improbable's recruitment focuses on identifying talented engineers capable of working on complex distributed systems and simulation challenges. The process is technical and thorough.

1

Application and Screening

Self-paced

CV reviewed for technical background and relevant software engineering experience.

2

Phone Screen

20-30 minutes

Initial call with recruiter covering background and technical interests.

3

Technical Challenge

2-4 hours

Take-home coding or technical problem to demonstrate problem-solving and engineering skills.

4

Technical Interview

60-90 minutes

Detailed interview with engineers discussing technical approach and capabilities.

5

Culture and Final Round

45-60 minutes

Interview with team and leadership assessing fit and interest in Improbable's mission.

Total process typically takes 2-3 weeks from application to offer.

Insider tips

Show strong software engineering fundamentals and interest in distributed systems. Research Improbable's technology stack and applications. Be prepared to discuss complex technical problems. Show enthusiasm for scaling challenges.

Stand out from the crowd

What Improbable looks for

Software Engineering Excellence

Strong fundamentals in software engineering, data structures, algorithms, and system design.

Technical Depth

Demonstrated expertise in distributed systems, concurrency, or large-scale software architecture.

Problem-Solving

Ability to approach complex technical challenges systematically and creatively.

Curiosity and Learning

Drive to understand complex systems and learn new technologies.

Collaboration

Ability to work effectively in teams and contribute to collective problem-solving.

Real questions asked

Improbable interview questions

20 questions sourced from real Improbable candidates. Practise answering them out loud before your interview.

  • 1Tell us about your software engineering background and key projects.
  • 2What interests you about distributed systems and simulation?
  • 3Describe your experience with large-scale systems or performance optimisation.
  • 4How do you approach complex technical problem-solving?
  • 5Tell us about a time you designed a scalable system.
  • 6What attracts you to Improbable?
  • 7Describe your experience with the technologies Improbable uses.
  • 8How do you stay current with technology trends?

Your career here

Growth & development at Improbable

Career progression at Improbable follows a relatively clear path for most roles. Promotions typically depend on demonstrating increased responsibility, deeper expertise, and leadership capability — whether that's leading teams, managing clients, or driving technical innovation. The organisation values both specialist depth and the ability to take on broader management responsibilities, so there are usually multiple progression routes available. Don't assume you need to move into management to advance — many startups organisations increasingly recognise and reward technical and specialist career paths.

Improbable invests in structured learning and development programmes, including access to training courses, conferences, and professional certifications. Many employees report that the L&D budget is generous and genuinely encouraged — not just a line in the benefits package that nobody actually uses. Whether it's technical upskilling, leadership development, or industry certifications, there's real support for continuous learning. While formal mentoring programmes may vary across departments, the culture generally encourages learning from more experienced colleagues. Building relationships with senior team members is one of the most effective ways to accelerate your development — seek out people whose career trajectory you admire and ask them for advice regularly.

For enterprise simulation software professionals, Improbable offers exposure to projects and challenges that build a strong CV whether you stay long-term or move on after a few years. The skills and experience you gain — particularly around Software Engineering Excellence and Technical Depth — are transferable across the startups sector and beyond. Internal mobility is possible for strong performers, with opportunities to move between teams, departments, or even locations as your career develops. Many senior leaders at Improbable started in entry-level or early-career positions, which speaks to the genuine career development opportunities available.

Compensation

Salary & benefits at Improbable

Software engineers: £50,000–£75,000. Senior engineers: £75,000–£110,000. Staff engineers: £110,000–£150,000+. Equity packages are standard. Salaries are competitive with London tech sector.

Notable benefits

Competitive equity package
Flexible working arrangements
Comprehensive health insurance
Pension contributions
Professional development budget
Learning and development opportunities
Wellbeing programmes
Flexible holiday policy
Remote working options
Office perks and facilities

How they hire

What it's like interviewing at Improbable

As a smaller organisation, Improbable hires selectively and often informally. Roles may not always be advertised on major job boards — keep an eye on their website, LinkedIn, and industry networks. The advantage is that the hiring process tends to be faster and more personal. Decisions are made by people who'll be working alongside you, which means the interview is a genuine two-way conversation.

The interview culture at Improbable balances professionalism with personality. They're assessing whether you can do the job and whether you'll fit the team — both matter. Come prepared to demonstrate Software Engineering Excellence and Technical Depth through specific examples, but also be ready for more open-ended conversation about your ambitions and what motivates you.

Life at the company

Work-life balance at Improbable

Improbable offers flexible and hybrid working arrangements for most roles. The specifics vary by team and function — some roles are predominantly remote, others require regular office presence — but the overall direction is towards flexibility. This isn't just policy on paper: employees generally report that managers support flexible working in practice, not just in the handbook. Notable extras include dedicated wellbeing and mental health support, generous annual leave.

The overall pace at Improbable is shaped by enterprise simulation software cycles and business priorities. Most employees report a manageable workload with occasional busy periods tied to project deadlines or seasonal demand. The company increasingly recognises that sustainable performance requires sustainable working patterns, and there's a genuine effort to support employee wellbeing alongside commercial objectives.

Frequently asked questions

What is the technology stack?

Improbable uses a range of modern technologies including C++, Typescript, and custom distributed systems frameworks. Experience with these languages is valuable but not essential if you have strong fundamentals.

How fast-paced is the environment?

Improbable operates at a startup pace with rapid development cycles, regular feature releases, and continuous iteration. The environment is dynamic and challenging.

What is the equity like?

Improbable offers competitive equity packages as part of compensation. As a successful startup, the equity has meaningful value.

How much mentorship is available?

Improbable pairs engineers with mentors and experienced colleagues. The technical culture supports learning through code review and collaborative problem-solving.

What kind of problems do you work on?

Engineers work on distributed systems, simulation engines, performance optimisation, and building scalable platforms. Projects have real-world applications across industries.

Is there remote work?

Improbable offers flexible working arrangements including remote options. Many engineers work hybrid or fully remote.

What is the work-life balance like at Improbable?

Work-life balance at Improbable varies by role and team. Most employees report a reasonable workload with flexible working options available for many roles. Like any organisation, there are busier periods, but the overall culture supports sustainable working patterns.

Does Improbable sponsor work visas for UK roles?

Visa sponsorship at Improbable may be available for specialist roles. Check their careers page or contact their recruitment team directly to confirm whether the specific position you're interested in offers sponsorship. Immigration policy changes can affect eligibility, so verify current requirements with Improbable's HR team during the application process.

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