Quantum Algorithms Intern

Phasecraft is the quantum algorithms company. We are building the mathematical foundations for quantum computing applications that solve real-world problems. Founded in 2019 by Toby Cubitt, Ashley Montanaro and John Morton, we are based in London and Bristol in the UK and opened an office in Washington DC in 2024, led by Steve Flammia. In 2023 we completed a $17m Series A funding round led by leading Silicon Valley deep tech VC, Playground Global.

Phasecraft’s unprecedented access to today’s best quantum computers – through partnerships with Google, IBM, Rigetti, and QuEra – provides us with unique opportunities to develop foundational IP, inform the development of next-generation quantum hardware, and accelerate commercialisation of high-value breakthroughs.

We are delighted to launch our 2025 Quantum Algorithms Internship programme. As a Quantum Algorithms Intern you will have the opportunity to join the Phasecraft team for a few (typically 3) months. Not only will you work on a technical research project focusing on the design, implementation or analysis of quantum algorithms and related techniques in near-term quantum computing, but you will also have the chance to experience life in a young and vibrant startup that is constantly pushing the boundaries of our knowledge of quantum computing. Past projects have ranged from theoretical work on the underpinning mathematics of quantum algorithms to writing code for real or simulated quantum hardware.

Our recent internship programmes have proven to be meaningful and successful. In 2022 we hired our first permanent staff member who had previously participated in our Internship programme and we have several ongoing collaborations with former interns. Some of the work undertaken during internships has led to high-quality publications (such as Optimizing fermionic encodings for both Hamiltonian and hardware and Extracting the spin excitation spectrum of a fermionic system using a quantum processor). Our team has enjoyed working on challenging projects with talented interns with diverse academic backgrounds including Quantum Information Theory, Materials Science, Physics and Computer Science.

The internship is a paid position with a competitive salary. Interns are based with the Phasecraft team in our offices in Bristol and London in the UK, and Washington DC in the US. Internships usually take place over the summer months, though dates can be flexible.