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Ascendion

Java Software Engineer

Ascendion
United Kingdom · Full-time · Mid-Senior

About the Role

We’re looking for an experienced Full Stack Software Engineer who is passionate about solving complex business problems through innovation and strong engineering practices. In this role, you will work across the full software development lifecycle with a strong focus on backend engineering, performance testing (NFT), and SRE principles. You’ll collaborate closely with cross-functional teams in a culture that encourages experimentation, learning, and continuous improvement.

Key Responsibilities

  • Design, develop, and maintain scalable backend services using Java and the Spring technology stack (Spring Boot, Spring MVC).
  • Build and integrate REST APIs, microservices, and cloud-native applications.
  • Contribute to performance testing (NFT) and reliability engineering (SRE) initiatives.
  • Develop full-stack features with exposure to front-end frameworks as required.
  • Work with Oracle, CockroachDB, MongoDB, including data modeling and SQL performance tuning.
  • Build and deploy applications using Kubernetes (GKE/GKP preferred), Docker, Jenkins, GitLab CI.
  • Integrate messaging systems such as Kafka or IBM MQ.
  • Create and maintain API documentation (Swagger/OpenAPI).
  • Implement and maintain security standards using OAuth2, JWT, Spring Security.
  • Apply monitoring and logging practices using ELK Stack, Prometheus, Grafana, Splunk.
  • Ensure code quality through tools like SonarQube, Checkstyle, ESLint.
  • Contribute to automation using Bash and Python scripting.

Required Qualifications

  • 5+ years of hands-on Java development experience, including Spring Boot and related frameworks.
  • Proven experience as a Full Stack Java Developer.
  • Strong understanding of microservice design patterns.
  • Working knowledge of Kubernetes concepts and operation (hands-on preferred).
  • Experience with SQL, performance tuning, and data modeling.
  • Exposure to Kafka, IBM MQ, and messaging systems.
  • Familiarity with modern development toolsets and CI/CD pipelines.
  • Understanding of system architecture (application, data, infrastructure).
  • Experience working in large, collaborative engineering environments.
  • BS/BA degree in Computer Science, Engineering, or equivalent experience.
  • Exposure to cloud-native development and modern technology trends.

Tech Stack Exposure (Highly Desired)

Backend: Java, Spring Boot, Spring MVC

APIs: REST, Swagger/OpenAPI

Databases: Oracle, CockroachDB, MongoDB, SQL

Cloud & Containers: GKE/GKP, Kubernetes, Docker

CI/CD: Jenkins, GitLab CI, Maven, Gradle

Testing: JUnit, TestNG, Mockito, Selenium, Cypress

Messaging: Kafka, IBM MQ

Monitoring/Logging: ELK, Prometheus, Grafana, Splunk

Security: OAuth2, JWT, Spring Security

Version Control: GitHub

Code Quality: SonarQube, Checkstyle, ESLint

Collab Tools: JIRA, Confluence, Slack, Teams

Key Skills

Ranked by relevance

spring boot java prometheus jenkins grafana gitlab cloud microservices kubernetes confluence gitlab ci selenium docker oracle testng kafka maven slack junit cicd jira sql elk
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Posted
Dec 10, 2025
Type
Full-time
Level
Mid-Senior
Location
Bournemouth
Company
Ascendion

Industries

Technology Information Internet IT Services IT Consulting

Categories

Consulting Engineering

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