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Back End Developer

Technology
Haystack
1 months agoUntil 17/05/2026
Full timeFully remote

Job description

  • *About the Team 🚀**

Our client is hiring

  • *two Senior Backend Engineers**
to join their team, working closely with the CTO during the next phase of growth.

It’s an exciting time for the business. Our client has a rapidly growing customer base in a market that’s genuinely excited about their product. They’ve built a strong reputation for a high-performance platform with an intuitive user experience, combined with close partnerships with customers, many of whom rely on the platform to keep their businesses running effectively.

The platform has been built on solid technical foundations over several years. The company is profitable, secure, and well-positioned for growth. With proven technology and strong market traction, our client is now scaling the team to capitalise on the opportunity to disrupt a stagnant market dominated by outdated, expensive, and underperforming competitors. 👀

🔥 This is a crucial role within the business and an excellent opportunity to accelerate your career in a fast-growing scale-up. You’ll work alongside experienced, pragmatic, and friendly colleagues, bringing technical leadership that will help scale the development team over the next two years and beyond.

This is a primarily remote role. However, our client values in-person collaboration and aims to bring the team together for two consecutive days every 4–6 weeks to work and socialise. These meet-ups take place in the South or East of England (rotating locations), so you’ll need to be able to travel, ideally with access to a car.

  • *The Role**
You’ll have the opportunity to work across all aspects of the platform - backend services, core technology (and web applications, if of interest). You’ll collaborate closely with customer-facing teams to ensure the platform performs exceptionally well and remains highly responsive to user needs.

You’ll use your experience operating cloud services or complex systems to tackle the technical and operational challenges that come with scaling. You’ll help develop new features and products and play a key role in growing the engineering team over time.

Joining a small but highly experienced and talented team, you’ll gain responsibility and influence quickly. Our client operates in a low-ego environment where decisions are evidence-based rather than hierarchy-driven.

  • *Tech Stack**
Our client has chosen technologies that effectively solve their challenges and are rewarding (and fast) to work with:
  • Backend services:
  • *Go
  • Databases:
  • *PostgreSQL
  • Infrastructure:
  • *Kubernetes**
on
  • *GCP**

and

  • *AWS
  • Supporting services:
  • *Redis
,
  • *Temporal**
,
  • *Timescale**
, plus selected third-party services
  • Core technology:
  • *C#**

and

  • *C++
  • Web apps:
  • *Svelte

and

  • *TypeScript**
They prioritise a short, frictionless development and testing loop.
  • *What They’re Looking For**
  • 10+ years of commercial engineering experience, ideally including time in a start-up or scale-up environment
  • Experience developing and operating cloud services or complex systems
  • 2+ years of commercial Go experience
  • 10+ years’ experience in one or more of: Go, C#, Java, C, or C++
  • Strong understanding of building reliable, scalable, maintainable systems, balanced with pragmatism and speed
  • Ownership mindset: able to drive work (large or small) to completion
  • Comfortable in a Linux development environment
  • Experience mentoring less-experienced engineers
  • Strong customer focus and product mindset
  • Experience using AI agents in the development process, with enthusiasm for pushing boundaries
  • Strong interest and capability in either:
  • DevOps/operational excellence (observability, infrastructure, deployments), or
  • User experience and UI design
  • Willingness to join the on-call rota once up to speed
  • Adaptable, open-minded, personable, and highly motivated
If you’re excited about joining a small, friendly, high-performing business with flexibility and strong career prospects, this could be an excellent fit.

Get in touch today to find out more 😊

Keywords
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