Principal Software Engineer
Principal Software Engineer

Principal Software Engineer

Colchester Full-Time 120000 - 180000 £ / year (est.) No home office possible
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At a Glance

  • Tasks: Lead AI solution design, build prototypes, and advise high-level stakeholders.
  • Company: Dynamic AI consultancy focused on innovative solutions.
  • Benefits: Competitive salary, remote work, and opportunities for professional growth.
  • Why this job: Make a real impact in AI while collaborating with industry leaders.
  • Qualifications: 8+ years in software engineering and strong customer-facing skills.
  • Other info: Mentorship opportunities and a chance to shape the future of AI.

The predicted salary is between 120000 - 180000 £ per year.

Principal Software Engineer – Node / TypeScript

£130,000 – £150,000

100% Remote – UK / Europe

Tech stack: Node.js, TypeScript, Cloud, Distributed Systems, APIs, Async Processing

Immersum is supporting a bootstrapped CyberSecurity SaaS company specialising in vulnerability scanning as they look to hire a Principal Software Engineer. With a team of just six, they are building a security-focused cloud platform that helps organisations continuously reduce risk across their digital estate. Fully remote and engineering-led, the business prioritises clean architecture and long-term technical quality.

Who They're Looking For

A T-shaped engineer with deep Node.js and TypeScript expertise who enjoys owning complex systems, influencing technical direction, and staying hands-on.

The Role

• Design and evolve backend services supporting APIs and asynchronous workflows

• Own architecture decisions focused on scalability and reliability

• Set high standards for code quality, testing, and observability

• Address performance, reliability, and technical debt

• Contribute to technical strategy while remaining hands-on

What You'll Bring

Strong production experience with Node.js and TypeScript

Background in distributed systems and event-driven architecture

Experience designing multi-consumer APIs

Solid understanding of cloud environments, data, and reliability

Clear communicator with principal-level impact

Why Join?

Mission-critical product with real engineering impact

Senior, low-ego team with high ownership

Fully remote, high-trust environment

Genuine influence over technical direction

Please note this role does not offer sponsorship.

Principal Software Engineer employer: Immersum

As a Principal Software Engineer at our AI consultancy, you will thrive in a dynamic remote work environment that champions innovation and collaboration. We offer competitive salaries, opportunities for professional growth through mentorship, and the chance to work directly with industry leaders on cutting-edge AI solutions. Our culture prioritises creativity and technical excellence, making it an ideal place for those looking to make a meaningful impact in the AI landscape.
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Contact Detail:

Immersum Recruiting Team

StudySmarter Expert Advice 🤫

We think this is how you could land Principal Software Engineer

✨Tip Number 1

Network like a pro! Reach out to your connections in the AI and software engineering space. Attend meetups, webinars, or even online forums where you can chat with industry leaders. You never know who might have a lead on that Principal Software Engineer role!

✨Tip Number 2

Show off your skills! Create a portfolio showcasing your best projects, especially those involving AI systems and prototypes. This is your chance to demonstrate your hands-on experience and technical leadership. Make sure to share it during interviews or on your LinkedIn profile.

✨Tip Number 3

Prepare for those tricky interviews! Brush up on your knowledge of transformer architectures and GenAI tools. Be ready to discuss how you've tackled real-world challenges and led teams in high-pressure situations. Confidence is key when you're speaking with CTOs and senior stakeholders.

✨Tip Number 4

Don’t forget to apply through our website! We’re always on the lookout for talented individuals like you. Plus, applying directly gives you a better chance to stand out and show us why you’d be a great fit for the team.

We think you need these skills to ace Principal Software Engineer

Python
JavaScript
Azure
AWS
AI Solution Design
Prototyping
Transformer Architectures
Model Fine-Tuning
Prompt Engineering
GenAI Tools (ChatGPT, Claude, Copilot, Cursor)
Full-Stack AI Systems Architecture
Customer Engagement
Technical Leadership
Mentoring
Scalability and Maintainability in Software Development

Some tips for your application 🫡

Tailor Your CV: Make sure your CV reflects the skills and experiences that match the Principal Software Engineer role. Highlight your experience with AI systems, customer-facing projects, and any leadership roles you've held. We want to see how you can bring value to our team!

Craft a Compelling Cover Letter: Your cover letter is your chance to shine! Use it to tell us why you're passionate about AI and how your background makes you the perfect fit for this role. Don’t forget to mention specific projects or achievements that showcase your expertise.

Showcase Your Technical Skills: In your application, be sure to highlight your proficiency in Python, JavaScript, and cloud platforms like Azure and AWS. We’re looking for someone who can lead AI solution design, so share examples of your hands-on experience with AI tools and systems.

Apply Through Our Website: We encourage you to apply directly through our website for the best chance of getting noticed. It’s super easy, and you’ll be able to submit all the necessary documents in one go. Plus, we love seeing applications come through our own platform!

How to prepare for a job interview at Immersum

✨Know Your Tech Inside Out

Make sure you’re well-versed in Python, JavaScript, Azure, and AWS. Brush up on your knowledge of transformer architectures and GenAI tools like ChatGPT and Claude. Being able to discuss these technologies confidently will show that you’re not just a leader but also a hands-on builder.

✨Prepare for Customer-Facing Scenarios

Since this role involves working with senior stakeholders, think about past experiences where you’ve navigated complex client environments. Be ready to share examples of how you’ve built trust and facilitated workshops, as this will demonstrate your customer-facing expertise.

✨Showcase Your Leadership Skills

Highlight your experience in mentoring engineers and leading architecture decisions. Prepare to discuss how you’ve guided teams in fast-moving environments and contributed to reusable components or best practices. This will illustrate your capability to lead and build internal capabilities.

✨Think About AI Strategy

Be prepared to discuss how you would drive discovery with technical stakeholders to identify AI opportunities. Think about how you would architect full-stack AI systems and handle objections with calm, credible insight. This will show that you can align AI strategy with business needs effectively.

Principal Software Engineer
Immersum
Location: Colchester

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