Software Development Engineer in Test

Dns Info Ltd; City of Westminster; On-site; GBP 40,000 - 70,000; Full time

Job summary

A technology company in London is seeking an experienced Software Development Engineer in Test (SDET) for a full-time contract role. The ideal candidate will have strong proficiency in Python3 and significant experience designing automated testing frameworks for Back End applications. Responsibilities include working with microservices and CI/CD pipelines. The position offers flexibility and a competitive remuneration package.

Qualifications

• Prior experience as an SDET or Software Developer.
• Proficiency in Python3 with testing frameworks, preferably pytest.
• Experience with automated testing frameworks for Back End applications.

Responsibilities

• Designing and supporting automated testing frameworks for Back End applications.
• Creating and running Docker containers.
• Implementing CI/CD pipelines.

Skills

SDET or Software Developer experience

Proficiency in Python3

Automated testing frameworks for Back End

Understanding of REST API

Microservice architecture

Docker containers

AWS, Azure, or GCP experience

CI/CD pipelines with Jenkins

Tools

Jenkins

GitHub Actions

Job description

SDET (Software Development Engineer in test)

London Contract/Full Time Posted: Tuesday, 27 January 2026

(Fixed term Employment)

Required Skills:

• Prior experience as an SDET or Software Developer;
• Proficiency in Python3 and experience with testing frameworks (pytest preferred);
• Experience designing and supporting automated testing frameworks for Back End applications;
• Understanding of REST API design and principles with relevant hands-on experience;
• Understanding and experience with modern microservice architecture and concepts including resiliency, failover, load-balancing, caching, etc.;
• Hands-on experience creating and running Docker containers;
• Hands-on experience with at least one cloud provider: AWS, Azure, or GCP (AWS preferred);
• Experience with creating CI/CD pipelines using such tools as Jenkins, GitHub Actions, or similar (Jenkins preferred);

Nice to Have:

• Experience with monitoring tools (Prometheus, Grafana, Elasticsearch/Logstash/Kibana, Datadog, Splunk, etc.)
• Experience with Back End frameworks like Spring/Micronaut/Dropwizard (Spring is a big plus)
• Experience with Kubernetes
• Experience with non-functional testing
• Experience with Infrastructure-as-Code concepts and tools like Terraform
• Experience designing and supporting automated testing frameworks for Front End applications

Location London, UK

Industry IT

Company Dns Info Ltd

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Posted Date 1/27/2026 8:11:50 AM