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Full Stack Engineer

Haystack
5 months ago
Applications closed

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About Us

We are on a mission to accelerate home decarbonisation by making it easy for anyone to start that journey today. We help households implement the most impactful energy and carbon-saving measures within their budgets and circumstances.


We’ve developed a comprehensive technology platform that simplifies the entire domestic heating electrification lifecycle, from decision-making to installation and ongoing monitoring. Our tech stack includes machine learning tools for analyzing energy tariffs, LiDAR for home scanning, and generative AI for installation tooling—offering an exciting array of technologies for you to work on.


As a Seed-stage company with institutional backing, we have ambitious growth plans and the necessary funding to achieve them. Join our small but expanding team to help shape our core platform technologies.


Your Role

Our core platform services are crucial in integrating householder and installer experiences. Your responsibilities will include:

  • Understanding core heating system and physics concepts underpinning our modeling.
  • Designing, developing, and maintaining our core platform services, including APIs, workflows, and data pipelines.
  • Supporting front-end teams with UI product integration.
  • Assisting product owners by providing technical insights during requirement refinement.
  • Supporting existing applications in production.
  • Collaborating with team members through peer review.


What We’re Looking For

You are motivated by our mission to reduce household energy consumption and carbon emissions, with a keen interest in heating systems and energy technologies.


Communication and Interaction

  • Excellent communicator with strong spoken and written English skills.
  • Attention to detail.
  • Experience working well within a hybrid/remote team environment.


Technical Skills

  • Proven experience in designing, implementing, and deploying .NET Core solutions (Web API, MVC) and delivering full-stack solutions, including web interfaces.
  • Strong experience with application security best practices.
  • Familiarity with OAuth/OpenID patterns for authentication and authorization.
  • Experience troubleshooting complex .NET solutions in production environments.
  • Broad knowledge of application infrastructure concepts like DNS, networks, and connectivity issues.
  • Experience with Azure infrastructure, topology, and deployment.
  • Experience collaborating with product owners to resolve design conflicts.
  • Proven track record of learning new skills and technologies.
  • Strong background in math/physics or other sciences equivalent to A-level.


Technologies/Skills

  • Required:C#, .NET Core, Entity Framework, Git/GitHub Workflow, Azure Application Deployment, OAuth2/OpenID, MSSQL.
  • Desirable:Mass Transit, Docker, Content Management, Azure Infrastructure Management, Azure Functions, ARM/Terraform, JavaScript, MySQL.
  • Bonus:Experience in training/refining GPT models, Google Analytics Configuration.


What You Can Expect From Us

  • Impactful work towards net-zero carbon emissions.
  • Autonomy in shaping core platform technologies.
  • Backed by institutional funding with ambitious growth plans.
  • Exposure to a range of cutting-edge technologies.
  • Collaboration with a talented and supportive team.


Interview Process

We prioritise hiring and want to ensure mutual compatibility. Our process includes:

  • Initial introductory call from a hiring manager.
  • Time-constrained technical task for shortlisted candidates.
  • Technical interview with a team member.
  • Final culture fit interview with a senior leader.
National AI Awards 2025

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