Senior Full-Stack Engineer – Lead, Build Scalable APIs

Crane Authentication; Gateshead; On-site; GBP 65,000 - 95,000; Full time

Benefits offered by this job

Health Insurance

Life Insurance

Modern offices

Job summary

Crane Authentication in Gateshead is seeking a Senior Full Stack Software Engineer to join our collaborative, engineering‑driven team. You will design, build, test, deploy, and support enterprise software across backend and frontend layers.

Expect to work with .NET/C#, Java/Spring Boot, and modern frontend frameworks like React, with mentoring responsibilities and active participation in CI/CD and cloud deployment. You will contribute to scalable, reliable systems and drive technical excellence.

Qualifications

• 5+ years developing commercial software.
• Experience with Git, Slack, Teams, Jira.
• Strong engineering practices and code quality.
• Mentoring and collaboration across teams.

Responsibilities

• Collaborate with PO and engineers to shape technical solutions.
• Design and implement backend services and APIs.
• Develop user interfaces with modern JS frameworks.
• Contribute to CI/CD pipelines and deployment processes.
• Mentor team members and promote engineering standards.

Skills

API development

Frontend frameworks

Mentoring

Agile practices

Tools

Java / Spring Boot

.NET / C#

React / Angular / Vue

CI/CD (Octopus)

SQL Server / Postgres

Job description

Crane Authentication in Gateshead is seeking a Senior Full Stack Software Engineer to join our collaborative, engineering‑driven team. You will design, build, test, deploy, and support enterprise software across backend and frontend layers.

Expect to work with .NET/C#, Java/Spring Boot, and modern frontend frameworks like React, with mentoring responsibilities and active participation in CI/CD and cloud deployment. You will contribute to scalable, reliable systems and drive technical excellence.