Principal Software Engineer
Principal Software Engineer

Principal Software Engineer

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

  • Tasks: Lead AI solution design and build advanced prototypes for high-level clients.
  • Company: Dynamic AI consultancy focused on innovative solutions and customer success.
  • Benefits: Competitive salary, remote work, and opportunities for professional growth.
  • Why this job: Make a real impact in AI while collaborating with top industry leaders.
  • Qualifications: 8+ years in software engineering with expertise in GenAI and customer engagement.
  • Other info: Mentorship opportunities and a culture of continuous learning.

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. Share it on platforms like GitHub or your personal website. This gives potential employers a taste of what you can do before they even meet you.

✨Tip Number 3

Prepare for interviews by practising common technical questions and scenarios related to AI and software engineering. Use mock interviews with friends or mentors to build confidence. Remember, it’s not just about answering questions; it’s about demonstrating your thought process and problem-solving skills.

✨Tip Number 4

Apply through our website! We’re always on the lookout for talented individuals like you. Tailor your application to highlight your experience with AI systems and customer-facing roles. Let’s get you in front of the right people!

We think you need these skills to ace Principal Software Engineer

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

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. Be sure to mention specific projects or achievements that demonstrate your expertise.

Showcase Your Technical Skills: Since this role involves hands-on technical work, don’t shy away from showcasing your coding skills. Include links to your GitHub or any relevant projects that highlight your experience with Python, JavaScript, and AI tools. We love seeing what you can build!

Apply Through Our Website: We encourage you to apply directly through our website. It’s the best way to ensure your application gets into the right hands. Plus, it shows us you’re serious about joining the StudySmarter team!

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, practice articulating complex technical concepts in a way that’s easy to understand. Think about past experiences where you’ve navigated challenging client environments and be ready to share those stories during the interview.

✨Showcase Your Leadership Skills

Be prepared to discuss your experience in leading architecture decisions and mentoring teams. Highlight specific examples where you’ve successfully guided engineering teams through fast-paced projects, demonstrating your ability to build trust and credibility with both your team and clients.

✨Demonstrate Problem-Solving Abilities

Think of real-world challenges you’ve faced in AI system development and how you approached them. Be ready to discuss your decision-making process regarding model choice, fine-tuning, and deployment strategies. This will showcase your strategic thinking and technical expertise.

Principal Software Engineer
Immersum
Location: Bath

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