Software Engineer – Backend (On-site)

JR United Kingdom; Portsmouth; On-site; GBP 70,000 - 90,000; Full time

Job summary

A leading technology company is looking for a Software Engineer – Backend to design and develop scalable systems in Portsmouth. The role involves working with cloud-native technologies and collaborating closely with a forward-thinking Machine Learning team. Candidates should have solid experience in backend development and a passion for learning and problem-solving.

Qualifications

• 2-3 years of experience in backend development.
• Experience with cloud-native technologies like AWS, Docker, and Terraform.
• Curiosity and willingness to learn.

Responsibilities

• Design and develop backend infrastructure for Machine Learning workloads.
• Collaborate with the Machine Learning team on best practices.
• Mentor colleagues to elevate the technical standards.

Skills

Cloud computing

Problem solving

Collaboration

Analytical skills

Tools

AWS

C# (.NET 9)

Terraform

Docker

Postgres

SNS/SQS

Redis

Job description

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Software Engineer – Backend (On-site), Portsmouth, Hampshire

Location: London (Liverpool Street)

Employment Type: Full-time and Permanent

Remuneration (London; On-site): £70–90k Base Salary + Discretionary Bonus + Equity

We are a stealth-mode AI laboratory researching and developing Machine Learning models.

The founding team consists of Cambridge graduates and former engineers at Microsoft, Bloomberg, and Goldman Sachs. We are backed by prominent investors from the US and the UK, including institutional VC funds and C-level executives of global technology companies.

The role involves designing and developing backend infrastructure for Machine Learning workloads. You will work closely with the Machine Learning team but are not required to have a background in Machine Learning. This is an applied role, seeking a software engineer with experience in cloud computing and distributed systems.

In this role, you will:

• Design and develop highly scalable, fault-tolerant, and event-driven systems.
• Take ownership of tasks with a high degree of autonomy.
• Collaborate with the founding team to contribute to best practices, standards, and company culture.
• Mentor colleagues to raise the company's technical bar.
• Leverage AWS extensively, managing it with Terraform.
• Write services in C# (.NET 9) and deploy to ECS or Lambda via GitHub Actions.
• Use Postgres, SNS/SQS, and Redis.
• Maintain good end-to-end test coverage and reliable deployments.

What we are looking for:

• Back-end development: 2-3 years of experience developing reliable, scalable systems with an object-oriented language.
• Cloud-native technologies: Experience with cloud deployment (AWS, GCP, Azure), containerization (Docker), infrastructure-as-code (Terraform), and observability tools (Datadog, Grafana).
• Curiosity: Eagerness to learn and grow.
• Problem solving: Strong analytical skills and attention to detail.
• Collaboration and communication: Excellent skills with technical and non-technical stakeholders.

We acknowledge that no candidate checks every box—passion for solving complex challenges and willingness to learn are key. We look forward to your application if you fit this mindset.

Nice to have:

• Experience with generative models, LLMs, multi-modal models, and Deep Learning.
• Contributions to open-source projects.
• Startup experience.
• Experience in cutting-edge AI research environments.
• Official role of “Founding Engineer” for immediate impact.