Junior/Mid Software Engineer

What You'll Do

Collaborate closely with other engineers to deliver end-to-end product functionality spanning experiment scheduling, automated image analysis, and remote operation of our devices.
Develop and improve our frontend applications using TypeScript, React, and GraphQL to create intuitive interfaces for complex biological workflows.
Build backend services that communicate with our hardware systems and learn about data integrity throughout the cell manufacturing process.
Collaborate across disciplines with hardware engineers, biologists, and commercial teams to build reliable and effective systems in record time.
Learn and contribute to our testing methods to help us deliver quality software at speed.
Learn and contribute to architecture and infrastructure, system performance, and interesting distributed system challenges.
Write code that you can immediately see the real-world impact: testing on our prototype machines in our own lab.
Up-skill in domains outside software engineering, from donning a lab coat and be trained on the nuances of stem cells, to the basics of fluid mechanics.
Be given a lot of autonomy, responsibility, and ownership of product problems and the technical solutions you design and deliver to address customer needs.

What We're Looking For (depending on experience level)

Are early in your software career and want to join an environment that gives you the chance to grow quickly
Have demonstrated technical promise so far in your studies or work
Want to work on difficult technical challenges in a field that will define the biggest scientific advancement this century
Self-starter attitude with a drive for producing quality work.
Care and compassion for customers and colleagues.
Experience with full-stack web development using TypeScript or other typed languages.
Experience with modern frontend frameworks (React preferred).
Experience with backend development and API design (Node.js preferred).
Experience working with databases (PostgreSQL and Prisma or similar ORM experience ideal).

Our technologies

Frontend (Netlify): React, TypeScript, GraphQL, Storybook
Backend (AWS & Heroku): NodeJS, TypeScript, GraphQL, MQTT, PostgreSQL, Python, Pulumi IaC
Physical Device (on-premise): NodeJS, Typescript, FastAPI, Python, MQTT
Firmware: C++, GTest, GMock, Bazel, Platformio

How We Use AI

Every engineer gets an AI tools budget. Pick what makes you faster.

AI and its tooling keep getting better. We want to keep getting better at using it to ship quality code. So we keep an eye on the latest developments, and we try out & share workflows across the team. You'll find a setup that fits how you work.

Right now, our team runs on Linear, and most of us use Claude Code. We’re trialling AI review platforms and low-friction cloud agents to tighten the loop from ‘needs doing’ to ‘shipped code’. Our company knowledge base is Notion — perfect for AI information retrieval and document drafting.

The bar for quality doesn't drop because AI wrote the first draft. You own your code, you understand it, and you can stand behind every line - whoever or whatever typed it.

Nice-to-Haves:

Understanding of distributed systems concepts.
Experience with Python for data processing or image analysis.
Background or interest in biology, lab automation, or scientific instrumentation.
Any experience with regulated environments (GMP, HIPAA, etc.)
Any experience with UI/product design processes and tools (wireframes, mockups, looks-like prototypes, etc.).

Why You'll Love Working Here

• Impact: Your work will directly enable the production of cell therapies that can transform patients' lives.
• Growth: We're solving complex problems at the intersection of software, hardware, and biology—you'll constantly learn and develop new skills.
• Autonomy: You'll have the freedom to shape our approach to GMP readiness, with support from a talented cross-disciplinary team.
• Team: Work with the best engineers and scientists in a collaborative environment where diverse perspectives drive innovation.
• Your tools, your call: An AI tools budget and the freedom to build the setup that makes you fastest - held to a high bar for code you own and understand.

Salary and Benefits

Competitive salary with stock options
Collaborative team environment with very high potential to learn new skills
32 days holiday (bank holidays, end-of-year closure, and 21 days discretionary PTO)
Workspace with office, workshop and wet lab facilities in the Imperial College Innovation hub, White City
Strong in-person culture with team lunches covered daily when in office
Flexible working with core hours (10am to 4pm) to support team collaboration
Hybrid working (typically 2-3 days on-site per week) that respects where you do your best work while maintaining overall team efficiency
Competitive pension scheme with tax-efficient salary sacrifice option