Senior Data Engineer (Defence) in Newcastle upon Tyne

• Location: Newcastle upon Tyne
• Security clearance: must be eligible for UK SC-level security clearance (UK national)
• Visa sponsorship: we are not able to sponsor visas for this role
• Closing date: applications reviewed on a rolling basis
• About Neptune North

Neptune North is a high-performing technical consultancy.

We build data, AI and software solutions for clients in defence, financial services and private capital, working on demanding problems in challenging environments.

We were founded in 2024 as a joint venture between Oliver Wyman and Rokos Capital Management.

We're headquartered in the centre of Newcastle upon Tyne, with a growing international footprint, and we're recruiting exceptional engineers across every level.

The role

We're looking for a Senior Data Engineer to build data capabilities for defence clients and to help provide technical oversight to a new and rapidly growing team.

You will help define and strengthen the data engineering capabilities that differentiate Neptune North and build a trusted reputation across defence clients.

Responsibilities also include contributing to business development, providing technical expertise and mentoring, overseeing the quality of deliverables, and hands-on involvement in projects.

This is a technical leadership role that requires depth beyond assembling pipelines from managed services.

Potential projects span fully engineered production platforms, developing Proof of Concepts (POCs), and applied work in constrained or accredited environments.

Responsibilities

• Influence the technical direction and play a key role in strengthening Neptune North’s data engineering capabilities
• Provide leadership and hands‑on delivery in a wide range of data projects
• Work directly with clients to shape requirements, manage expectations, and to build trust
• Contribute to winning work by helping to write compelling bids and high-quality technical proposals
• Demonstrate flexibility in taking on work aligned to evolving company priorities
• Advocate knowledge sharing across the team and identify opportunities for reuse of capabilities
• Set the standard for data quality, testing and reliability, and hold the team to it
• Regularly provide career and technical mentorship to other engineers to build a high calibre data engineering team
• What makes a great candidate
• Minimum 5 years employment experience designing, building and overseeing data-intensive applications and pipelines
• Excellent programming skills in Python and SQL, and ideally other modern programming languages
• Experience with distributed computing frameworks such as Spark or Databricks
• Experience with cloud platforms such as AWS, Azure or GCP, and orchestration tools such as Airflow
• A track record of establishing data quality, testing and observability practices across a team
• A solid understanding of software engineering processes, and a drive to embed best practices in teams
• Excellent verbal and written communication skills and the ability to adapt communication according to the audience
• Experience working effectively in a team and a commitment to knowledge‑sharing and collaboration
• Strong academic foundations, typically a first-class or 2:1 degree from a leading university in Computer Science, Mathematics, Engineering or Physics, or a related discipline
• Ability to work effectively with ambiguity, while maintaining a disciplined, outcome‑focussed approach
• Experience in defence or national security is a strong plus
• Experience writing technical proposals or bids is a plus
• What you can achieve
• Shape data capabilities that strengthen UK defence and national security
• Play a critical role in building and nurturing a rapidly expanding world‑class engineering team
• Gain broad experience across interesting data projects applied to challenging environments
• Be part of a collaborative, low‑ego team
• Why join us
• Work on a wide variety of interesting problems alongside high‑calibre colleagues.

Our culture is collaborative and supportive.

Neptune North is a place where people help each other grow and feel a real sense of belonging

• 25 days’ holiday allowance plus bank holidays
• Matching pension contributions up to 6%
• Private health insurance through Bupa
• Discretionary bonus
• Travel

Neptune North works with clients across the UK’s defence sector.

Many engagements involve regular travel and time on client site.

This could mean two to three days per week over an entire assignment, or shorter periods of full‑time on‑site working anywhere in the UK, at sites including Cheltenham, Bristol, Glasgow, Portsmouth or other defence hubs.

We support travelling staff with full expenses and hotel arrangements, and we discuss client placements with you in advance.

We are looking for engineers who see this variety as part of the appeal of consultancy work rather than a downside.

Interview process

Our interview process is rigorous because the standard internally is high. For this role, it has three stages:

• Written questions, which you complete at a time that suits you
• A first interview covering your CV, experience and career aspirations
• A technical interview with members of our engineering team
• Equity, diversity and inclusion

At Neptune North we are committed to a work environment that embraces diversity, equity and inclusion.

We believe diverse backgrounds, perspectives and experiences help us attract, develop and retain the best talent.

We do not discriminate on the basis of gender, age, race or ethnicity, identification as an LGBTQIA+ individual, religion, disability, or any other characteristic protected by relevant local law.

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