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Ampstek

Mobile Application Developer (Kotlin/Java, Rest APIs)

On site

Burgess hill, United kingdom

Mid level

Freelance

28-01-2026

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Skills

Leadership Java Kotlin GitHub CI/CD Monitoring Architecture Programming Software Development Agile Spring Maven Gradle Android Microservices GitHub Actions

Job Specifications

Title: Mobile Application Developer (Kotlin/Java, Rest APIs)

Location: Burgess Hill, UK (Onsite)

Long-Term Contract.

Job Description:

We are looking for a highly motivated, independent, and skilled engineer to build the mobile application service layer (backend for front end) for the upcoming iOS and Android travel mobile application.

Essential Criteria

6+ years of software development experience in a professional environment such as:
Experienced in designing, programming, testing, and application design for microservices or backend for front ends for mobile applications using Kotlin or Java 17 and above, Spring and build automation with Maven or Gradle.
Observability – Sentry, ELK, Dynatrace.
Experienced technically leading an agile engineering team and contributing to agile ceremonies.
Deep Knowledge of cloud and CI/CD technologies, and how to get code into production quickly and reliably with Github Actions, Circle CI.
Bachelor’s Degree in computer science, computer science engineering, or related experience required, advanced degree preferred.

Application Solutioning

Architect and design the rails based on domain driven design in collaboration with solution architect, staff engineer, business architects and consumer partners.
Present solutions on an ongoing basis in wider forums including senior leaders to seek feedback, make continuous adjustments and drive sign offs.
Document architecture, technical requirements, high-level and low-level designs to include component design, data models, integration views, infrastructure design and software technology stack.
Conduct quantitative comparative analysis on solution options.

Software Development

Sets up the infrastructure and the development environments.
Writes and delivery high quality code in latest versions of Kotlin
Leads review of colleague’s work
Builds monitoring dashboards and logging & alerting strategies.
Monitors system performance and availability and improves software quality through root cause analysis.
Deep understanding of infrastructure technologies and components
Has deep understanding of the core tools used in the planning, analysing, crafting, building, testing, configuring, and maintaining of assigned application(s)

Leadership

Prepares and presents solutions and progress updates to product and technology leadership
Collaborates and communicates effectively across engineering and enterprise teams.
Mentors and coaches junior team members
Influences team members with creative changes and improvements by challenging status quo and demonstrating risk taking.
Demonstrates increased self-reliance to achieve team goals.

About the Company

Ampstek supplies thousands of tech and digital professionals annually to a range of clients through its offices which spread across in 42 countries. From simple beginnings in 2014, Ampstek has always been on a journey to reinvent the world of recruitment through creating amazing customer and candidate experiences driven by a genuine desire to build long term relationships and outcomes. This motivation to break from the pack is stronger than ever as we roll out Ampstek Power globally, an innovative life hub platform for freel... Know more