Senior Backend Engineer Mobile Apps

N Consulting Limited; Burgess Hill; Hybrid; GBP 80,000 - GBP 100,000; Full time

Job summary

A leading technology consulting firm is seeking a Senior Backend Engineer to develop the service layer for a travel mobile app. Ideal candidates have over 8 years of experience, particularly in Kotlin and Java, and possess strong skills in building microservices. This role requires leadership in Agile environments and collaboration across teams. The position offers a 6-month contract with potential for permanent hire and a hybrid work model requiring at least 3 days in the office.

Qualifications

• 8+ years of professional software development experience.
• Strong experience in building microservices or backend-for-frontend architectures for mobile applications.
• Experience with observability tools such as Sentry, ELK, Dynatrace.

Responsibilities

• Architect and design solutions based on domain-driven design.
• Write and deliver high-quality code in Kotlin.
• Mentor and coach junior team members.

Skills

Microservices architecture

Kotlin

Java 17+

Spring

Observability tools

Agile methodologies

Cloud technologies

CI/CD

Github Actions

CircleCI

Education

Bachelor’s degree in Computer Science or related field

Tools

Maven

Gradle

Job description

LocationBurgess Hill, United Kingdom# Senior Backend Engineer – Mobile Apps at N Consulting LtdLocationBurgess Hill, United KingdomSalary£300 - £350 /dayJob TypeContractDate PostedFebruary 2nd, 2026Apply NowSenior Engineer – Travel & Lifestyle Mobile Application**About the Role:** We are seeking a highly motivated, independent, and technically skilled Senior Engineer to join our team and build the service layer (backend-for-frontend) for an upcoming iOS and Android travel mobile application. This is a hands-on role where you will architect, develop, and lead initiatives across software development, solutioning, and team leadership.**Seniority Level:** 8+ years of professional software development experience### **Essential Criteria:**6+ years of professional software development experienceExpertise in building microservices or backend-for-frontend architectures for mobile applications using **Kotlin or Java 17+**, with **Spring** and build automation (**Maven/Gradle**)Strong experience with **observability tools** such as Sentry, ELK, DynatraceExperience **technically leading Agile engineering teams** and participating in Agile ceremoniesDeep knowledge of **cloud technologies**, CI/CD, and fast, reliable code delivery (e.g., **Github Actions, CircleCI**)**Bachelor’s degree** in Computer Science or related field (advanced degree preferred)Comfortable working on a **6-month contract** with potential for permanent hire### **Key Responsibilities:****Application Solutioning:**Architect and design solutions based on **domain-driven design** in collaboration with solution architects, staff engineers, business architects, and consumer partnersPresent solutions to senior leadership and wider forums, incorporating feedback and driving sign-offsDocument architecture, technical requirements, high-level and low-level designs, including component design, data models, integration views, infrastructure, and technology stackConduct quantitative comparative analysis on solution options**Software Development:**Set up infrastructure and development environmentsWrite and deliver high-quality code in **Kotlin**Lead code reviews and mentor peersBuild monitoring dashboards and logging/alerting strategiesMonitor system performance, improve software quality through **root cause analysis**Demonstrate deep understanding of infrastructure and development toolsMaintain responsibility for planning, analysis, crafting, building, testing, and maintaining assigned applications**Leadership:**Prepare and present solutions and progress updates to product and technology leadershipCollaborate effectively across engineering and enterprise teamsMentor and coach junior team membersInfluence team practices by challenging the status quo and demonstrating risk-takingExhibit self-reliance to achieve team goals**Location:** Burgess Hill, UK **Work Mode:** Hybrid – at least 3 days in office **Contract Duration:** 6 months (with potential for permanent hire at end client)