Contract Software Engineer (Java & Kotlin)
Spectrum IT Recruitment • London, London • Posted July 14, 2026
Position Overview
Senior Java & Kotlin Backend Engineer
Location: London (Hybrid - Wednesday office attendance required)
Contract: Initial 2 months
IR35: Outside IR35
Start Date: ASAP
The Role
We're working with a leading technology organisation seeking an experienced Senior Java & Kotlin Backend Engineer to join their engineering team on an initial two-month contract.
This role offers the opportunity to contribute to greenfield backend development, building scalable, cloud-native microservices within a modern engineering environment. You'll work alongside cross-functional teams to design, develop and deliver high-quality backend solutions that are secure, reliable and built for scale.
Key Responsibilities
Design, develop and maintain backend services using Java and Kotlin.
Build and enhance RESTful APIs within a microservices architecture.
Develop secure, scalable and high-performance applications.
Collaborate with Product ...
Location: London (Hybrid - Wednesday office attendance required)
Contract: Initial 2 months
IR35: Outside IR35
Start Date: ASAP
The Role
We're working with a leading technology organisation seeking an experienced Senior Java & Kotlin Backend Engineer to join their engineering team on an initial two-month contract.
This role offers the opportunity to contribute to greenfield backend development, building scalable, cloud-native microservices within a modern engineering environment. You'll work alongside cross-functional teams to design, develop and deliver high-quality backend solutions that are secure, reliable and built for scale.
Key Responsibilities
Design, develop and maintain backend services using Java and Kotlin.
Build and enhance RESTful APIs within a microservices architecture.
Develop secure, scalable and high-performance applications.
Collaborate with Product ...