Senior Engineer - Travel & Lifestyle - Mobile Application

Data Freelance Hub; Burgess Hill; On-site; GBP 60,000 - GBP 85,000; Full time

Job summary

A dynamic tech firm is seeking a Senior Engineer with over 8 years of experience to focus on mobile application backend development. The role requires proficiency in Kotlin or Java 17+ and Spring, as well as experience with CI/CD tools. The selected candidate will lead an agile team and design microservices for a new travel mobile application. Ideal applicants will have a bachelor's degree in a related field and a strong background in cloud technologies and observability tools.

Qualifications

• 8+ years of experience in software development; 6+ years in a professional environment.
• Experience in designing and programming microservices for mobile applications.
• Proficiency in Kotlin or Java 17+ with Spring.

Responsibilities

• Design and maintain microservices for mobile applications.
• Lead an agile engineering team and contribute to ceremonies.
• Monitor application health with observability tools.

Skills

Kotlin

Java 17+

Spring

CI/CD tools

Agile methodologies

Observability tools

Team leadership

Education

Bachelor’s Degree in Computer Science or related field

Tools

Maven

Gradle

Sentry

ELK

Dynatrace

Github Actions

CircleCI

Job description

Sr. Engineer – Travel & Lifestyle – Mobile Application

This role is for a Senior Engineer with 8+ years of experience, focusing on mobile application backend development using Kotlin or Java 17+, Spring, and CI/CD tools.

Location: Burgess Hill, England, United Kingdom.

Overview

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.

Responsibilities

• Design, program, test, and maintain microservices or backend for front ends for mobile applications using Kotlin or Java 17+ and Spring, with build automation via Maven or Gradle.
• Use observability tools such as Sentry, ELK, and Dynatrace to monitor application health.
• Lead an agile engineering team and contribute to agile ceremonies.
• Design and maintain cloud and CI/CD pipelines to release code quickly and reliably with Github Actions or CircleCI.
• Set up the infrastructure and development environments.
• Write high‑quality, latest‑version Kotlin code.
• Review colleague’s work and provide constructive feedback.
• Build monitoring dashboards and logging & alerting strategies.
• Monitor system performance and availability, performing root cause analysis to improve quality.
• Document architecture, technical requirements, high‑level and low‑level designs, including component design, data models, integration views, infrastructure design, and technology stack.
• Prepare and present solutions and progress updates to product and technology leadership.
• Collaborate and communicate across engineering and enterprise teams.
• Mentor and coach junior team members.
• Influence team members with creative changes and improvements, challenging the status quo and demonstrating risk‑taking.
• Show increased self‑reliance to achieve team goals.

Qualifications & Requirements

• 8+ years of experience in software development; 6+ years in a professional environment.
• Experience designing, programming, testing, and application design for microservices or backend for front ends for mobile applications.
• Proficiency in Kotlin or Java 17+ with Spring; build automation with Maven or Gradle.
• Experience with observability tools such as Sentry, ELK, Dynatrace.
• Strong background in cloud & CI/CD technologies, Github Actions, CircleCI.
• Bachelor’s Degree in Computer Science, Computer Science Engineering, or related field (advanced degree preferred).
• Experience technically leading an agile engineering team.
• Strong knowledge in domain‑driven design and architecture.
• Ability to conduct quantitative comparative analysis on solution options.