Senior Software Engineer

Role: Sr Software Engineer

Location: London, UK (3 days hybrid)

Candidate rate: GBP 350/day (Inside IR35)

Duration: 6months +

Description:

• Good technical skills in Java and Java frameworks with relevant experience in latest version of Java 17+
• Ability to solve technical problems, performance bottlenecks
• Good with Technical design and standard coding practices and secure design
• Experience in Test frameworks and able to automate the API's and performance testing(Added benefit)
• Experience in any observability platform like Dynatrace etc, able to create alerts and dashboards
• Able to explain the key metrics for observability of a service
• Ability to build CICD pipelines preferably in Github actions
• Cloud experience, preferably Azure but other cloud services also fine.

Responsibilities:

• Build and optimize Back End services using Java (Java 17+), Spring Boot/Micronaut
• Design RESTful APIs, asynchronous messaging systems, and microservices.
• Own performance, reliability, monitoring, and observability for critical services.
• Ensure high engineering standards: code quality, design reviews, testing, CI/CD, and best practices.

System Design & Architecture

• Drive system design sessions, architecture reviews, and RFC processes.
• Make key decisions around data modelling, caching, scalability, security, and operational resiliency.
• Evaluate and adopt modern architectural patterns (event-driven, domain-driven design, API-first, cloud native).

Essential skills/knowledge/experience:

• 10-15+ years of experience building large-scale Back End systems.
• Strong expertise in Java, Spring Boot (or Micronaut/Quarkus), and JVM internals.
• Deep experience with distributed systems, concurrency, and high-performance architectures.
• Hands-on experience with message queues (Kafka, RabbitMQ, Pulsar), API design, and event-driven systems.
• Solid understanding of SQL/NoSQL databases, caching, and data modelling.
• Strong knowledge of cloud platforms (Azure) and container technologies (Docker, Kubernete.