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Senior Back-end Engineer

Job in Bristol, Bristol County, BS1, England, UK
Listing for: Calyptus
Full Time position
Listed on 2025-12-30
Job specializations:
  • Software Development
    Backend Developer, Cloud Engineer - Software, Software Engineer, Full Stack Developer
Job Description & How to Apply Below

Key responsibilities

  • Technical Architecture : lead the design and development of backend services for our SaaS B2B platform, focusing on creating an open architecture that integrates various players in the private equity ecosystem
  • Microservices : build and maintain microservices using Java 21 and Spring Boot, ensuring scalability, reliability, and performance
  • API Development : develop and optimise RESTful APIs to support our frontend applications built with React and Type Script
  • Platform Integration : ensure seamless integration of our platform with third-party systems used by PE firms, distributors, private banks, and fund administrators
  • Performance & Optimization : proactively identify performance bottlenecks, optimize data flow, and ensure backend services operate with maximum efficiency
  • Best Practices & Code Quality : advocate for clean code, automated testing, and Dev Ops best practices, ensuring high-quality software development and deployment processes
  • Mentorship & team growth : provide technical leadership and mentorship to engineers, building a culture of excellence, innovation and continuous learning
Qualifications
  • 7+ years of experience in back-end development, with a strong focus on Java and Spring Boot
  • Proven experience in designing and developing microservices-based architectures
  • Hands-on experience with AWS services, including EC2, and a strong understanding of Kubernetes (K8s) for container orchestration is a big plus
  • Strong experience in building RESTful APIs, especially OpenAPI-generated interfaces
  • Familiarity with CI / CD pipelines and automated testing frameworks
  • Proficiency with SQL including migrations (Flyway), ensuring data integrity and optimal performance
  • Excellent analytical and problem-solving skills with a focus on delivering scalable solutions
  • Strong communication skills with the ability to articulate complex technical concepts to non-technical stakeholders
Technologies
  • Back-end :
    Java 21, Spring Boot, REST, Postgres / Jooq / Flyway, JUnit / Test Containers / Mockito, AWS (EC2, RDS, Cognito, S3, KMS), Containerization (Docker / kubernetes)
  • Front-end :
    Type Script, React, and Tailwind CSS
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Position Requirements
10+ Years work experience
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