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Principal Software Engineer

ImmersumSheffield, UK

6 days ago

Job type

Full-time

Job description

Title : Principal Software Engineer (AI Engineer with Customer-Facing)

Location : Remote

Salary : £140,000 - £170,000

Tech : Python, JavaScript, Azure, AWS, AI

Industry : AI Consultancy

This is a senior-level, hands-on technical role for someone who can lead AI solution design , build advanced prototypes , and advise high-level customer stakeholders with credibility and confidence.

You’ll work directly with CTOs, chief architects, and engineering leaders to uncover real challenges, design smart solutions, and drive full-cycle AI delivery—from first sketch to deployed system.

You're not just a leader—you’re a builder. You love writing software, prototyping ideas, and using AI tools across every part of the development process.

Key Responsibilities

Strategic Technical Leadership

Act as the go-to AI technical expert in customer environments.
Drive discovery with senior technical stakeholders to identify high-impact AI opportunities.
Architect full-stack AI systems using LLMs, RAG pipelines, and robust evaluation frameworks.
Make informed decisions on model choice, fine-tuning, and deployment strategies.

AI System Development

Build production-grade prototypes with deep awareness of AI system limitations.

Apply deep knowledge of transformer architectures to real-world use cases.

Implement thoughtful evaluation systems to measure performance, bias, and business value.

Design with scalability and maintainability in mind from the very beginning.

Customer AI Enablement

Facilitate workshops to align AI strategy and implementation plans.

Lead assessments of AI readiness and architecture design.

Handle complex objections with calm, confident technical insight.

Build lasting partnerships that position the consultancy as the trusted AI integrator.

Internal Capability Building

Mentor engineers and upskill teams across the organisation.

Contribute to reusable components, design patterns, and shared best practices.

Lead internal discussions on the latest GenAI tools and trends.

Define quality benchmarks for how we design, implement, and evaluate AI systems.

What We’re Looking For

GenAI Mastery

Deep experience with transformer-based models and GenAI pipelines.

Strong understanding of prompt engineering, model finetuning, and toolchain integration.

Hands-on experience with top GenAI tools (ChatGPT, Claude, Copilot, Cursor).

Ability to build AI systems that are measurable, explainable, and responsibly deployed.

Bonus : Comfort combining classical ML techniques (clustering, classification, embeddings) with GenAI.

Engineering Leadership

8+ years building scalable, maintainable, enterprise-grade software.

Comfortable leading architecture decisions and full-stack implementation.

Proven track record of delivering systems that make it to production—and work at scale.

Ability to guide and mentor engineering teams in fast-moving environments.

Customer-Facing Expertise

Experience working directly with senior stakeholders, including C-level decision-makers.

Skilled at navigating complex client environments and building long-term technical trust.

Comfortable leading workshops, aligning priorities, and facilitating technical strategy.

Known for being calm, clear, and credible in challenging or high-pressure settings.

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Principal Software Engineer • Sheffield, UK

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