At a Glance
- Tasks: Own and solve complex engineering problems, design AI systems, and mentor fellow engineers.
- Company: Throxy, a cutting-edge research lab in London focused on the future of sales.
- Benefits: Real ownership, fast-paced environment, and the chance to make a significant impact.
- Other info: Fast shipping culture; design docs to production in days.
- Why this job: Join a small, talented team and shape the future of software-driven sales.
- Qualifications: 6+ years in software engineering, expertise in TypeScript, and strong problem-solving skills.
The predicted salary is between 80000 - 100000 € per year.
About Throxy
Throxy is a small applied research lab working on the future of sales. We are a group of researchers, engineers, and technologists in London inventing at the edge of what's useful and possible. At Throxy, we are building agents that generate sales pipeline for our customers. If you're interested in the types of problems we're working on, we'd love to hear from you. We're a small, talent dense team moving extremely fast. Our engineers ship to production daily, talk directly to customers, and own problems end‑to‑end.
Role
As a Staff Engineer, you'll be one of the most senior ICs on the team. You won't be handed tickets, you'll be handed problem spaces and trusted to figure out the right thing to build, then build it. You'll set technical direction across multiple product surfaces, make the architectural calls that the next 50 engineers will live with, and stay hands‑on in the code while doing it. This is a player‑coach role. ~70% IC, ~30% leverage (design docs, reviews, mentoring, unblocking).
What You'll Do
- Own ambiguous, cross‑cutting problems end‑to‑end — from 'this is slow / broken / missing' to shipped and measured.
- Design the systems behind our AI agents, LLM evaluations, data pipelines, and provider waterfalls.
- Set technical standards for the codebase.
- Mentor senior and mid‑level engineers; raise the bar through code review and design review.
- Partner directly with the founders and Head of Engineering on roadmap and technical strategy.
- Talk to customers, watch them use the product, and turn that into shipped improvements within days.
What We're Looking For
- 6+ years of production software engineering experience (or equivalent scope) at a high‑velocity company.
- Deep expertise in TypeScript and modern web infra, we run Next.js (App Router), Trigger.dev, Postgres/Drizzle.
- Strong systems thinking: you've designed distributed systems, data pipelines, or large‑scale background job infrastructure that actually held up.
- Comfort with LLM‑based systems, prompt design, evaluations, agentic workflows, structured outputs. You don't need to have built foundation models, but you've shipped real LLM features and know where they break.
- Track record of going from zero → one on ambiguous problems without a PM holding your hand.
- Strong written communication, you can write a design doc that aligns a room.
- Bias to action. You'd rather ship a working v1 today than a perfect v1 next month.
Why Throxy
- Real ownership, small team, big surface area, your fingerprints will be everywhere.
- Senior bar, everyone you work with will sharpen you.
- AI‑native from day one, we're not retrofitting AI onto a legacy product.
- Speed, design doc on Monday, in production by Friday, in front of customers by next week.
Staff Engineer employer: throxy (yc p25)
Throxy is an exceptional employer for those seeking to make a significant impact in the tech industry. With a small, talent-dense team based in London, employees enjoy real ownership of their work, rapid deployment cycles, and direct interaction with customers, fostering a dynamic and innovative work culture. The company prioritises employee growth through mentorship and collaboration, ensuring that every team member sharpens their skills while contributing to cutting-edge projects in AI and software development.
StudySmarter Expert Advice🤫
We think this is how you could land Staff Engineer
✨Tip Number 1
Network like a pro! Reach out to people in your field, especially those at companies you're interested in. A friendly chat can lead to opportunities that aren't even advertised yet.
✨Tip Number 2
Show off your skills! Create a portfolio or GitHub repo showcasing your projects and contributions. This gives potential employers a taste of what you can do and how you tackle problems.
✨Tip Number 3
Prepare for interviews by practising problem-solving on the spot. Throxy values hands-on skills, so be ready to discuss how you'd approach ambiguous challenges and share your thought process.
✨Tip Number 4
Apply through our website! It’s the best way to get noticed. Tailor your application to highlight your experience with TypeScript and systems thinking, and let us see how you can contribute to our fast-paced team.
We think you need these skills to ace Staff Engineer
Some tips for your application 🫡
Show Your Passion:When you're writing your application, let your enthusiasm for the role and our mission shine through. We want to see that you’re genuinely excited about tackling the challenges we face at Throxy and how you can contribute to our innovative team.
Be Specific About Your Experience:Don’t just list your past jobs; dive into the specifics of what you've built and the problems you've solved. We love seeing concrete examples of your work, especially in areas like TypeScript, distributed systems, and LLM features. Make it clear how your experience aligns with what we're looking for.
Craft a Clear Design Doc:Since strong written communication is key for us, consider including a mini design doc or a brief overview of a project you’ve worked on. This will showcase your ability to articulate complex ideas clearly and effectively, which is crucial for the role.
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 don’t miss any important updates. Plus, it shows you’re proactive and keen to join our team!
How to prepare for a job interview at throxy (yc p25)
✨Understand the Problem Spaces
Before your interview, take some time to really understand the types of problems Throxy is tackling. Familiarise yourself with their approach to building sales pipeline agents and think about how you would tackle ambiguous problems. This will show that you're not just a coder but a problem solver who can think critically about the challenges they face.
✨Showcase Your Technical Expertise
Make sure to highlight your experience with TypeScript, Next.js, and any relevant systems you've designed. Be prepared to discuss specific projects where you've built or improved systems, especially those involving LLMs or data pipelines. This is your chance to demonstrate your deep expertise and how it aligns with what Throxy is looking for.
✨Prepare for Hands-On Discussions
Since this role involves a player-coach dynamic, be ready to dive into technical discussions. Bring examples of your code or design docs to illustrate your thought process. This will help you convey your ability to mentor others while still being hands-on in the codebase, which is crucial for the Staff Engineer position.
✨Communicate Clearly and Confidently
Strong written and verbal communication skills are key for this role. Practice explaining complex technical concepts in simple terms, as you'll need to communicate effectively with both engineers and non-technical stakeholders. Being able to articulate your ideas clearly will set you apart and show that you can align teams around a shared vision.
