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- Tasks: Build and scale innovative software features that transform financial systems.
- Company: Join a dynamic startup revolutionising capital management in London.
- Benefits: Competitive salary, collaborative environment, and opportunities for rapid career growth.
- Why this job: Make a real impact on cutting-edge projects with ownership and fast-paced development.
- Qualifications: 5+ years in web app development with React and TypeScript; AWS experience preferred.
- Other info: Work in a high-energy team where your contributions truly matter.
The predicted salary is between 36000 - 60000 £ per year.
PortF is building tools that help private equity and debt investors automate portfolio monitoring, valuations, and reporting. We’re a small team with a big opportunity - to change how billions in capital are managed by replacing spreadsheets and PDFs with smarter, more connected workflows. Funds managing billions already use PortF. If you want to help rethink how financial systems work – fast, hands‑on, and with real ownership – we’d love to chat.
The role involves working across our stack (React, TypeScript, Node, Postgres, AWS), owning features end‑to‑end – from designing data models to polishing UX flows. You’ll help shape our architecture as we scale, and you’ll be trusted to ship quickly and responsibly. We’re an in‑person‑first team based in London because speed and collaboration matter the most. Three days a week minimum.
You might be a fit if you:
- Have 5+ years of experience building production web apps in React + TypeScript.
- Are comfortable across the stack.
- Have worked with AWS or similar cloud infrastructure.
- Take ownership – you care about impact.
- Are curious about AI, automation, and code‑assist tools (you’ve used Cursor, Copilot, or similar).
- Move fast, test properly, and can think like a product person.
- Love to work in a startup environment.
- Are excited to work in our central London office (mostly).
- Thrive in small, high‑energy teams where decisions happen quickly.
- Have experience with Postgres, Prisma, GraphQL, or Next.js.
- Have exposure to LangChain / LangGraph / AI‑driven workflows.
- You’ve built something end‑to‑end on your own (a side project, startup, or open source).
What you’ll do:
- Build and scale core product features – some from 0→1 (like AI agents and event‑driven workflow automation), others scaling existing systems as we grow.
- Work closely with the founders on product direction and trade‑offs.
- Help refine our architecture as we scale multi‑tenant AI‑driven systems.
- Ship to production fast.
- Experiment with AI tools to accelerate how we build.
- Build real, complex products used by leading investors.
- Work with a small, elite team who care deeply about craft and velocity.
- Be part of an early team where your work genuinely moves the company.
Mid/Senior Software Engineer in London employer: PortF
Contact Detail:
PortF Recruiting Team
StudySmarter Expert Advice 🤫
We think this is how you could land Mid/Senior Software Engineer in London
✨Tip Number 1
Network like a pro! Reach out to folks in your industry, especially those already at PortF. A friendly chat can open doors and give you insider info on the company culture and what they really value.
✨Tip Number 2
Show off your skills! If you've built something cool, whether it's a side project or an open-source contribution, make sure to highlight it. Bring it up in conversations or even better, share it during interviews to demonstrate your hands-on experience.
✨Tip Number 3
Prepare for technical chats! Brush up on your React, TypeScript, and AWS knowledge. Be ready to discuss how you've tackled challenges in past projects and how you can contribute to building and scaling features at PortF.
✨Tip Number 4
Apply through our website! It’s the best way to ensure your application gets seen. Plus, it shows you're genuinely interested in being part of our team. Don’t forget to follow up after applying – a little persistence goes a long way!
We think you need these skills to ace Mid/Senior Software Engineer in London
Some tips for your application 🫡
Show Your Passion for Building: When you write your application, let us see your enthusiasm for building software. Share specific examples of projects you've worked on, especially those where you took ownership and drove them from concept to completion.
Tailor Your Application: Make sure to customise your application to highlight your experience with the technologies we use, like React, TypeScript, and AWS. This shows us that you understand our stack and are ready to hit the ground running.
Be Clear and Concise: Keep your application straightforward and to the point. We appreciate clarity, so avoid jargon and focus on what makes you a great fit for the role. Highlight your relevant skills and experiences without fluff.
Apply Through Our Website: We encourage you to apply directly through our website. It’s the best way for us to receive your application and ensures you’re considered for the role. Plus, it shows you’re keen to join our team!
How to prepare for a job interview at PortF
✨Know Your Tech Stack
Make sure you’re well-versed in React, TypeScript, Node, Postgres, and AWS. Brush up on your knowledge of these technologies and be ready to discuss how you've used them in past projects. This will show that you can hit the ground running.
✨Showcase Your Ownership
Prepare examples of projects where you took full ownership, from design to deployment. Highlight how your contributions made a tangible impact. This aligns perfectly with what PortF is looking for in a candidate who cares about their work.
✨Be Ready to Discuss AI and Automation
Since the role involves experimenting with AI tools, come prepared to talk about any experience you have with AI-driven workflows or tools like Cursor and Copilot. Share your thoughts on how these technologies can enhance productivity in software development.
✨Emphasise Collaboration and Speed
PortF values quick decision-making and collaboration. Be ready to discuss how you thrive in fast-paced environments and how you’ve worked effectively within small teams. Share specific instances where your quick thinking led to successful outcomes.