Oliver Bernard
Senior Java Software Engineer
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Senior Java Developers (Kafka & Kotlin) – 12-Month Contract | Canary Wharf | Inside IR35
Location: Canary Wharf, London (3 days per week onsite)
Contract Length: 12 Months
Engagement Type: Inside IR35
Start Date: ASAP / Flexible
Rate: £800 (Inside IR35)
We are seeking an experienced Senior Java Developers to join a high-performing engineering team delivering large-scale, business-critical systems within a fast-paced enterprise environment.
This role is ideal for a developer with over 10 years of commercial software engineering experience and a strong background in Java, event-driven architectures, Kafka, and Kotlin. You will play a key role in designing, developing, and enhancing scalable distributed applications while collaborating closely with architects, product teams, and fellow engineers.
Key Responsibilities
- Design, develop, and maintain high-performance Java-based applications.
- Build and enhance event-driven microservices using Kafka.
- Develop robust backend services and APIs using Java and Kotlin.
- Contribute to architecture discussions and technical design decisions.
- Ensure code quality through testing, code reviews, and engineering best practices.
- Troubleshoot and resolve complex production issues.
- Work collaboratively within Agile delivery teams.
- Mentor junior developers and provide technical leadership where required.
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Required Skills & Experience
- 10+ years of hands-on Java development experience.
- Strong commercial experience with Apache Kafka.
- Proven experience developing applications using Kotlin.
- Strong understanding of microservices architecture and distributed systems.
- Experience building RESTful APIs and backend services.
- Excellent knowledge of Spring Boot and related Java frameworks.
- Experience with CI/CD pipelines and modern DevOps practices.
- Strong understanding of software design patterns and engineering best practices.
- Experience working within Agile/Scrum environments.
- Excellent communication and stakeholder engagement skills.
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Desirable Skills
- Experience with cloud platforms (AWS, Azure, or GCP).
- Knowledge of containerisation technologies such as Docker and Kubernetes.
- Experience in financial services, banking, or capital markets environments.
- Exposure to event sourcing and streaming architectures.
What's on Offer
- 12-month contract with strong extension potential.
- Opportunity to work on large-scale, modern engineering initiatives.
- Hybrid working model – 3 days per week onsite in Canary Wharf.
- Collaborative and technically strong engineering environment.
- Competitive daily rate inside IR35.
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