Software Engineer

Undisclosed; Sheffield; On-site; GBP 65,000 - 95,000; Full time

Job summary

Undisclosed is seeking a Software Engineer – Strategic Engineering in Sheffield to join a Cyber Security-focused team. You will design and build production-grade backend services, APIs, and tooling, operating in AWS/Azure with Terraform automation.

The role combines strong coding with cloud/SRE practices, ensuring reliability, security, and scalability across enterprise data platforms. Onsite support is required three days per week in Sheffield.

Qualifications

• Strong software engineering background with production-grade backend services.
• Experience delivering APIs, microservices and tooling in cloud environments.
• Proficient in Go, Python, Java or C# with modern DevOps practices.

Responsibilities

• Design, develop, test, and maintain backend services, APIs, and tools.
• Build production software using Go, Python, Java, or C# in cloud environments (AWS/Azure).
• Implement automated testing, CI/CD pipelines, and observability practices.
• Deploy and operate services, automate provisioning with Terraform, and ensure security.

Skills

Go

Python

Java

C#

AWS

Azure

CI/CD

API design

SRE basics

Tools

Kong API Gateway

Databricks

Terraform

Job description

Software Engineer – Strategic Engineering, Cyber Security

Location: Sheffield (3 days per week onsite mandatory)

Contract End Date: 22 September 2027

About the Role

An exciting opportunity has arisen for a talented Software Engineer to join a Strategic Engineering team within Cyber Security. This role is ideal for a strong software engineer who enjoys building production-grade applications, backend services, APIs, developer tooling, and automation solutions that support enterprise-scale cyber security and data platforms.

This is a software engineering-focused position with significant hands‑on development responsibilities. It is not a traditional infrastructure, DevOps, or platform engineering role. The successful candidate will combine strong coding expertise with experience operating services in cloud environments using modern DevOps and Site Reliability Engineering (SRE) practices.

Key Responsibilities

Software Engineering

• Design, develop, test, and maintain backend services, APIs, and engineering tools.
• Build production-quality software using technologies such as Go, Python, Java, or C#.
• Apply software engineering best practices including SOLID principles, design patterns, refactoring, and peer code reviews.
• Develop scalable, maintainable, and highly testable systems and services.
• Implement automated testing, including unit, integration, and behavioural testing.
• Produce clear technical documentation and contribute to engineering standards and best practices.
• Deploy, support, and operate services within AWS and/or Azure environments.
• Automate platform provisioning through Infrastructure as Code using Terraform.
• Work with cloud networking concepts and secure service integrations.
• Support engineering platforms used across security and data‑focused teams.

DevOps & SRE

• Build, maintain, and optimise CI/CD pipelines.
• Implement monitoring, alerting, logging, and observability solutions.
• Troubleshoot production incidents and contribute to operational support activities.
• Continuously improve service reliability, security, scalability, and performance.
• Strong software engineering background with significant hands‑on development experience.
• Proven experience building production systems using Go, Python, Java, or C#.
• Experience designing and building APIs, microservices, and backend services.
• Strong understanding of software architecture, design principles, and engineering best practices.
• Experience with automated testing approaches including TDD, BDD, unit testing, and integration testing.
• Experience working with AWS and/or Azure cloud platforms.
• Knowledge of Terraform and Infrastructure as Code methodologies.
• Experience with CI/CD pipelines and supporting production environments.
• Experience with Kong API Gateway.
• Exposure to Cyber Security engineering environments.
• Knowledge of Databricks, Spark, or Data Lake technologies.
• Experience supporting Data Engineering platforms.
• Understanding of API security concepts including OAuth2, JWT, and mTLS.
• Knowledge of Site Reliability Engineering (SRE) and observability practices.