Kotlin software contractor
Listed on 2026-07-17
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Software Development
Software Engineer, Kotlin
Senior Kotlin Software Engineer (Contract)
Location: Belfast (Hybrid - 2 days onsite)
Contract: 12 Months with extensions
Daily Rate: Negotiable/outside IR35
OverviewVANRATH are delighted to be partnering with a leading technology organisation to recruit a Senior Kotlin Software Engineer for a major platform modernisation programme.
This is a high-impact contract focused on developing modern Kotlin applications as part of a large-scale platform transformation, delivering secure, high-performance software supporting next-generation payment solutions.
Key Responsibilities- Develop and maintain production-grade Kotlin applications
- Contribute to the modernisation of a large-scale platform
- Collaborate with architects and engineers on system design and technical decisions
- Write clean, scalable and well-tested code
- Support integration, troubleshooting and continuous improvement
- Work within Agile teams to deliver key project milestones
- Strong commercial Kotlin development experience
- 5+ years' software engineering experience
- Strong object-oriented programming and software design principles
- Experience building scalable, enterprise applications
- Agile development experience
- Platform migration or modernisation projects
- Payments, Fin Tech or regulated industry experience
- JVM performance tuning, embedded systems or cloud technologies
- 12-month contract - very likely extension
- Daily rate
- Hybrid working (2 days in Belfast)
- Long-term programme with strong extension potential
- Opportunity to work on a business-critical platform transformation with real technical ownership
For further information on this job, apply via the link or contact the VANRATH office for a confidential chat today.
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