Haystack
Senior Software Engineer
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We’re supporting a growing organisation looking for an experienced Senior Software Engineer to join its engineering community and play a key role in delivering large-scale, operationally critical client projects.
This is a hands-on technical role for an experienced engineer who is ready to take ownership of key areas of a project while supporting and mentoring more junior members of the team.
What you’ll be doing
- Taking ownership of one or more areas of a project and delivering high-quality, well-tested code.
- Upholding technical quality standards across your project, including build pipelines, code quality, testing and source control.
- Contributing to technical discussions and helping stakeholders and teams align around effective solutions.
- Contributing to requirements analysis and solution design.
- Leading the breakdown of requirements into development tasks and providing task-level estimates.
- Supporting Mid-Level Engineers with delivery activities, including stakeholder communication, task estimation and technical quality practices.
- Supporting impact assessments for proposed changes.
- Reviewing processes and tools to identify opportunities for continuous improvement.
- Building deep expertise in one or more technologies aligned with the organisation’s technology ecosystem.
- Contributing to solutions that are secure, scalable and cost-conscious.
- Using AI-assisted engineering tools, such as AI coding assistants, automated code review and test generation, to support delivery while applying sound engineering judgement to their output.
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What we’re looking for
- Experience working in client-facing delivery teams, with strong stakeholder communication skills.
- Hands-on experience delivering features within large-scale software development projects.
- Experience working within Agile software development environments and continuous delivery.
- Strong experience with .NET Core, ASP.NET Core and C#.
- Experience with SQL and NoSQL databases.
- Experience with cloud platforms such as AWS and/or Azure.
- Experience with JavaScript/TypeScript frameworks.
- A good understanding of Agile software development practices and tools.
- Experience incorporating AI-assisted development tools, such as GitHub Copilot, Claude Code or similar, into your day-to-day workflow.
It would be great if you also have experience with
- Client-facing experience gained within a technical consultancy or software vendor.
- Mentoring or supporting junior engineers.
- System-to-system integration and interoperability.
- Common design patterns and approaches, such as event-driven architecture, CQRS or Domain-Driven Design.
- Integrating AI-powered features, such as chatbots or intelligent automation, into existing applications.
- Platform engineering practices, such as internal developer platforms, paved-road tooling or self-service infrastructure.
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What’s on offer?
- Competitive salary.
- Flexible annual leave, including options to buy, sell and carry forward leave.
- Twice-yearly tax-free bonus opportunities, subject to company performance.
- Continuous training, development and career support.
- Employer pension contributions.
- Flexible healthcare benefits.
- A strong social calendar, including annual events, away days and regular team socials.
- Cycle-to-work and green vehicle schemes.
- Opportunities to support charity, community and initiatives that encourage greater diversity in technology.
- Hybrid and flexible working, allowing you to vary when and where you work to support collaboration, creativity and focused working.
Location: Hybrid / Flexible
Role: Senior Software Engineer
If you’re an experienced Software Engineer looking for a hands-on senior role where you can take ownership of technical delivery, support other engineers and work on large-scale projects, get in touch to find out more.
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