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Flexciton

Junior-Mid Software Engineer - Optimisation/Operations Research

Greater London
Posted about 2 months ago
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About Flexciton

At Flexciton, we work with high-tech factories built with investments worth hundreds of millions of dollars, producing advanced chips at the atomic level. It can take up to nine months to fabricate these cutting-edge products.

We are proud to be the only SaaS product in the world that plans and schedules production in high-tech semiconductor fabs, using complex algorithms in real-time, all from our London office.

Our technology consistently delivers the best production schedules, and leading companies like Seagate trust Flexciton to run their production 24/7. With operations across the US, Europe, and expansion into Asia, we are on a path to realise our vision for the Autonomous Factory.

Job Summary

We're seeking an optimisation engineer to join our tight-knit software development team. We are working towards one common goal: to automate and optimise decision-making across the chipmaking industry. As a member of the team, you will build innovative scheduling models and algorithms within a SaaS platform that already serves some of the most advanced factories in the world.

Key Responsibilities

  • Be part of an agile software delivery team building the Flexciton app suite for scheduling and planning semiconductor operations.
  • Research and implement new methods for tackling interesting combinatorial problems using approaches such as Linear Programming (LP), Mixed Integer Linear Programming (MILP).
  • Develop heuristic search and discrete event simulation algorithms.
  • Partner with customer-facing teams to trial the developed solutions live in some of the world’s most advanced semiconductor fabrication plants.
  • Characterise quality and performance of different modelling approaches using benchmarks and data analytics.

Required Experience

  • University degree in computer science, operations research, engineering, mathematics, physics or related.
  • 0-2 years of relevant experience (or recent graduate with strong academic background in optimisation).
  • An interest or experience in exact or heuristic optimisation methods for solving combinatorial problems such as LP, MILP, constraint programming, metaheuristics.
  • Understanding of software engineering, algorithms and data structures.
  • Experience in Python or another object-oriented programming language.
  • Eagerness to communicate complex technical concepts clearly.
  • Ability to balance mathematical rigour with an appetite to ship software and learn via iteration.

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I’m in my final year doing Economics and I don’t know whether to apply for grad schemes now or do a masters first. What do you think?

Honest answer β€” it depends on where you want to end up. A lot of top grad schemes (Big 4, civil service, banking) don’t need a masters. Let’s look at the ones you’d be competitive for now, and we can decide if a masters actually adds anything.

Also worth knowing: most autumn 2026 applications are open now. Timing matters more than you think.

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Graduate Consultant β€” 2026 Scheme

PwCΒ·London, UK
Β£35,000/yr

Why you're a good match

Strong

Your economics background and your summer at a regional bank line up with what PwC looks for on the consulting scheme. Applications close in four weeks.

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Why you're a good match

You’ve got the grades and the economics background, and your bank internship is exactly the experience this scheme looks for. Apply soon β€” deadlines close within the month.

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Experience fit

Your summer at the bank plus your econometrics coursework map directly to the day-one responsibilities on this scheme β€” client modelling, market briefings, and deal support.

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The following are a plus but not required:

  • Experience working with solvers like CPLEX, Gurobi, FICO etc.
  • Experience with scheduling and planning problems in other domains (e.g. logistics, energy).
  • Experience with Rust.

Above all, we are looking for curious and motivated individuals that are eager to grow while changing the face of semiconductor manufacturing. If this sounds like you, even if you don’t feel like you meet all the criteria above, apply today and help us build the future.

Benefits

  • Competitive salary based on skills and experience.
  • Stock Options πŸ’° so when we make it big - so do you!
  • L&D Opportunities πŸ“š.
  • We are determined to continuously develop ourselves, our company and our teams. We have a Β£500 training allowance for every employee. We also have our mini library where we keep adding books every week. We want to be able to create as many opportunities for our teams' growth.
  • Hybrid working model of 3 days in the office (Monday, Tuesdays and Fridays) and 2 days working from home.
  • Breakfasts and Snacks 🍩 πŸͺ 🍫 Our office is stocked with snacks, drinks, fruits, cereal.
  • Monthly lunches πŸ• in the office.
  • Quarterly team activity or dinner 🍽.
  • Annual Team Trip 🌍 Every year, we take our team to an annual retreat where we have strategy workshops, foster our culture and do lots of fun activities.
  • Additional day of holiday every year (up to 30 days) after two years of service.
  • Discounts with Charlie HR perks πŸ€‘ Get discounts on brands, cinema tickets, shopping, travel and many more!
  • Season Ticket Loan/Cycle to Work Scheme 🚴.
  • 2 Weeks Work From Anywhere Policy πŸ’».

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Why Join Us

Welcome to Flexciton, where innovation meets impact! We're not just a startup; we're a powerhouse of creativity, at the forefront of revolutionising the semiconductor industry. Picture this: our software, crafted by brilliant minds like yours, is shaping the very devices you're using right now.

We're not stopping here. We're scaling up, fast. We've been recognised globally as one of the most disruptive companies, and our potential is limitless. Our strength lies in our people – in a space where ideas flow freely, and every voice, including yours, can shape the future.

What we do matters. The factories we optimise create the technology that defines our world, from healthcare breakthroughs to cutting-edge communication devices. Join us, and you're not just joining a team; you're becoming a part of progress, a force that's transforming industries and leaving a mark on the world.

At Flexciton, your passion, your ideas, and your hard work don't just contribute; they drive us forward. There has never been a more exciting time to be a part of our story. Join us, and let's create a future where your innovations don't just matter – they inspire.

At Flexciton, we celebrate diversity and thrive in an inclusive atmosphere. We wholeheartedly embrace equal employment opportunities and believe in making our recruitment process accessible to all. Your unique abilities and perspectives are valued here. If you require any accommodations due to a disability or specific needs, please don't hesitate to inform us. Your comfort and success are our priority. Welcome to a place where everyone belongs.

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Skills

Linear programming
Mixed integer linear programming
Heuristic search
Discrete event simulation
Python
Object-oriented programming
Algorithms
Data structures
Data analytics
Combinatorial optimization
Constraint programming
Metaheuristics
Software engineering
Benchmarking
Mathematical modeling

Location

Greater London, England, United Kingdom

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