Senior Engineer - Hertfordshire

Senior Engineer
- Hertfordshire Senior Engineer Home-based with occasional travel Permanent | Full Time Competitive salary  bonus and benefits About the role Passionate about building great software and excited by what AI can bring to modern engineering? If so, we'd love to hear from you! Haven is looking for a Senior Engineer to join our talented Technology team, playing a pivotal role in shaping how we design, build and evolve the digital products behind memorable holidays for millions of guests.

As a Senior Engineer, you'll be a "go to" person within your squad, bringing deep technical expertise to both hands-on delivery and the wider engineering approach. You'll define how features get built, drive them through to completion, and help others grow along the way. Around 80% of your time will be hands-on engineering, with the remainder spent guiding, mentoring and shaping technical direction.

This is a fantastic opportunity for an engineer who's excited by the current AI-driven shift in software development, keen to embed AI capabilities across the engineering lifecycle, and eager to help evolve how a modern team plans, designs, builds and validates software. Your Opportunity Design and deliver well-crafted, tested and maintainable solutions across our digital estate Make effective use of AI capabilities throughout the engineering lifecycle, continually evolving your practice as tools and techniques develop Act as a technical "go to" for your squad, with a near-complete understanding of the systems you look after Define the approach to features and drive them through to completion Engage actively in product and engineering ceremonies, sharing ideas and constructively challenging assumptions Support and enable more junior engineers through knowledge sharing, coaching and mentoring Drive continual improvement within your squad and the wider engineering team Communicate progress, blockers and ideas clearly and openly Simplify and continually improve Haven's digital estate Keep developing your own capability, taking advantage of internal development tools and opportunities What we'd like you to bring Proven experience as a software engineer within a similar environment, using relevant modern technology Excellent working knowledge of one of C#, Dart or Type Script Excellent working knowledge of one of .NET,

Flutter, React or Node.js Excellent working knowledge of AI-enabled software engineering, including AI tooling, context management, prompting, agentic workflows and appropriate human validation Strong grounding in software design principles (SOLID, Clean Code) and testing practices such as TDD Good working knowledge of key technical areas including HTTP, REST, HTML and CSS, and/or relational databases depending on your focus Solid understanding of requirements engineering, story writing and acceptance criteria Familiarity with Agile, Lean and OKRs, along with CI/CD, logging, monitoring and alerting tools Good working knowledge of AWS or Azure, Dev Ops and SRE principles, and security concerns such as OWASP Top 10 Strong communication, collaboration and stakeholder management skills A curious, pragmatic mindset with the ability to balance quality, sustainability, risk and pace Why Haven?

Haven is the UK's leading holiday operator, welcoming around 4 million guests every year to our 38 parks and 3 exclusive owners-only sites. From Scotland to Cornwall, Norfolk to Wales, our parks are dotted along some of the most breath-taking parts of the great British coastline. A career here is more than just a job. We're one great team of up to 12,500 during peak season, united by a passion for creating experiences and memories that last a lifetime - for guests, owners and each other.

It's what we call our Breath of Fresh Air culture: valuing and supporting every team member to be their authentic self and putting people at the heart of every decision we make. This role is remote-first. You'll be based from home most of the time, with occasional visits to our Hemel Hempstead head office or Haven parks - typically around three days on Park per quarter - for team collaboration, workshops and external events.

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