At a Glance
- Tasks: Lead technical strategy and tackle complex engineering challenges across teams.
- Company: Fast-growing tech company transforming public services with AI.
- Benefits: Competitive salary up to £250k, hybrid work, and mentorship opportunities.
- Other info: Join a dynamic team with a focus on innovation and career growth.
- Why this job: Make a real impact by shaping technology that supports frontline workers in crisis.
- Qualifications: Proven experience in architecture, full-stack engineering, and AI integration.
This role is with one of Dex's trusted partner companies.
We work closely with their teams to truly understand their culture, goals, and what they're looking for, so we can match you with the right opportunity and give you context about the role before you commit to a process.
The role Over 120,000 frontline public-service workers across hundreds of organisations rely on this company's platform every day to handle real-time interpretation, note-taking, and call management.
Backed by leading global tech founders and scaling rapidly, they are deploying production AI where system reliability directly affects people in crisis, converting high-friction civic administration into immediate human support.
As the product organisation expands, the hardest technical challenges no longer sit neatly within a single squad—they live in the seams between them.
As Principal Product Engineer, you will set the technical strategy for the entire department, untangle systemic cross-team risks, and stay hands-on with high-leverage code shipping to production multiple times a day.
This is not an ivory-tower architecture role isolated from delivery, nor is it a squad lead with a loftier title; it is the technical anchor for the entire engineering organisation.
The work Set the overarching technical architecture and engineering standards as AI capabilities are embedded across the core product.
Identify and resolve systemic architectural risks, bottlenecks, and dependencies that sit between individual product squads.
Write and deploy critical systems that scale globally, shipping to more than 100,000 active users multiple times a day in tight iteration cycles.
Partner with executive and cross-functional leadership to turn business goals into pragmatic technical roadmaps.
Mentor and raise the ceiling for the department's most senior engineers through system design reviews and hands-on pairing.
What You Bring Proven track record defining architecture and technical strategy across multiple squads, not just an isolated team.
Deep full-stack engineering foundations with direct experience evolving and hardening high-throughput production systems under scale.
Strong commercial and product instinct, with the communication clarity to advise executives and translate engineering constraints into business decisions.
Active technical fluency with AI and a clear perspective on how modern model capabilities should be integrated into product engineering.
Ability to work in a hybrid capacity from central London.
Principal Product Engineer employer: Dex
At Dex, we pride ourselves on being an exceptional employer, offering a dynamic work culture that fosters innovation and collaboration. Our London-based team enjoys a hybrid working model, competitive benefits, and ample opportunities for professional growth, all while contributing to cutting-edge technology in the healthcare sector. Join us to make a meaningful impact in real-time systems and edge deployment, surrounded by a supportive team dedicated to excellence.
StudySmarter Expert Advice🤫
We think this is how you could land Principal Product Engineer
✨Join Local Tech Meetups
Get out there and mingle with fellow developers by joining local tech meetups. It’s a fantastic way to meet people who might be working at Dex or know someone who does. Plus, you can pick up some trendy tech skills and trends while you're at it!
✨Contribute to Open Source Projects
Show off your coding chops by jumping into open-source projects. Not only does this give you practical experience, but it also gets you noticed in the dev community. You'll create a killer portfolio that speaks volumes about your skills to Dex.
✨Tap into Online Developer Communities
Don’t underestimate the power of online developer communities like GitHub, Stack Overflow, and even Reddit. Participate in discussions, share your projects, and build your visibility. We can often find opportunities through these channels that can lead to a full-time gig at companies like Dex.
✨Explore Job Boards Specifically for Tech Roles
Keep your eyes peeled on job boards that focus on tech roles. Sites like TechCareers or Stack Overflow Jobs can often have listings for companies like Dex that might not show up on broader job sites. Make it a habit to check these regularly, and don’t hesitate to apply directly through our website!
We think you need these skills to ace Principal Product Engineer
Some tips for your application 🫡
Show off your coding skills:When applying for a software engineering role, it's super important to showcase your coding skills. Make sure your CV includes your tech stack, any relevant programming languages you’re comfortable with, and examples of projects you've worked on. If you have a GitHub profile, link it up! We love to see code in action.
Tailor your portfolio:For a full-time role, we’d expect to see some solid examples of your work in your portfolio. Make sure to include at least two or three projects that highlight your problem-solving skills and your ability to work with different technologies. Focus on the projects that are most relevant to the position at Dex.
Craft a killer cover letter:Your cover letter is your chance to stand out—make it personal! Explain why you want to work at Dex and how your skills align with the role. Show us your passion for software development. We dig enthusiastic candidates who understand the value of collaboration and continuous learning!
Be clear and concise:When it comes to writing your CV and cover letter, clarity is key. Avoid jargon that could confuse us and stick to simple, direct language. Highlight your achievements with quantifiable results where possible, and keep everything easy to read. A well-organised application goes a long way!
How to prepare for a job interview at Dex
✨Brush Up on Your Coding Skills
For a full-time software engineering role, it's crucial that we stay sharp with our coding abilities. Expect technical questions that might involve solving problems on the spot or discussing algorithms. Practise on platforms like LeetCode or HackerRank to get comfortable with the types of questions that often come up.
✨Know Your Tools and Frameworks
Make sure we’re well-acquainted with the tools and technologies listed in the job description. Familiarise ourselves with any specific frameworks or programming languages mentioned. If Dex uses React or Node.js, for instance, be ready to discuss how we’ve used them in previous projects or coursework.
✨Showcase Your Projects
Bring along a portfolio that highlights our best work. This could be code samples, GitHub repositories, or any side projects we’ve built. Make sure we can talk through our thought process for each project, especially the challenges we faced and how we solved them—this shows our problem-solving skills in action.
✨Prepare for Behavioural Questions
While technical skills are key, full-time positions also require cultural fit. Be ready to discuss our previous experiences and how we handle teamwork, conflict, and deadlines. Brush up on the STAR method—Situation, Task, Action, Result—to clearly articulate our past experiences when discussing how we've contributed to a team.
