Senior Software Engineer

Jobtailor; Cheltenham; On-site; GBP 70,000 - 120,000; Full time

Job summary

Jobtailor is seeking engineers to design and deliver secure, scalable software within small agile teams in Cheltenham. You will stay hands-on while shaping architecture and technical direction, set engineering standards, mentor others, and work directly with customers to tackle complex problems.

A security-first mindset and cloud/DevSecOps emphasis are essential to succeed. The role values proficiency in Java, TypeScript, Python or Go, strong experience with CI/CD, and the ability to influence

Qualifications

• Clearance: Active or recently active SC or DV (essential).
• Experience delivering production systems in complex environments.
• Deep knowledge in at least one modern language (Java/TypeScript/Python/Go).
• Cloud/container experience with a security-first mindset.

Responsibilities

• Design and deliver secure, scalable software in small agile teams.
• Stay hands-on while shaping architecture and technical direction.
• Set engineering standards and mentor others.
• Work directly with customers to solve complex problems.
• Champion modern engineering practices (cloud, CI/CD, DevSecOps).

Skills

Java

TypeScript

Python

Go

CI/CD

DevSecOps

Software Architecture

Agile Methodologies

Security Practices

Cloud/Container Experience

Technical Decision Influence

Mentoring

Job description

• Design and deliver secure, scalable software in small agile teams


• Stay hands-on while shaping architecture and technical direction


• Set engineering standards and mentor others


• Work directly with customers to solve complex problems


• Champion modern engineering practices (cloud, CI/CD, DevSecOps)

Requirements

• Active, or recently active, SC or DV clearance (essential)


• Strong experience delivering production systems in complex environments


• Depth in at least one modern language (Java, TypeScript, Python, Go etc.)


• Cloud/container experience and a security-first mindset


• Confidence influencing technical decisions and improving teams

Core Competencies

Demonstrates expertise in designing and delivering secure, scalable software while mentoring teams and influencing technical decisions. Proficient in modern engineering practices, including cloud technologies and CI/CD methodologies.

Highest-signal resume keywords

• Active SC Clearance


• Production Systems Delivery


• Modern Language Proficiency


• Cloud/Container Experience


• Technical Decision Influence

Hard Skills

• Java


• TypeScript


• Python


• Go


• CI/CD


• DevSecOps


• Software Architecture


• Agile Methodologies


• Security Practices

Soft Skills

• Mentoring


• Problem Solving


• Influencing