Back End Developer (London)

Job Title: Backend Developer （Mandarin Speaking）Job Type: Full-timeLocation: On-site (United Kingdom)Salary: £28,000–£45,000 per yearSchedule: Monday to FridayResponsibilities:Design, develop, and maintain scalable and reliable API systems.Build and manage microservices to support system scalability and performance.Write clean, maintainable code following best practices, including SOLID principles and design patterns.Diagnose and resolve technical issues; provide ongoing technical support.Essential Requirements:Proficiency in both Mandarin and English (working languages).Solid experience with backend programming, particularly Golang and Lua.Hands-on experience with PostgreSQL, Redis, and Kafka.Strong understanding of RESTful API design and implementation.Experience with Nginx and Linux-based environmentsFamiliarity with development tools such as Git and Docker.Preferred Qualifications:Understanding of distributed system principles (CAP, BASE, ACID).Experience with data tools such as Elasticsearch, ClickHouse, or Tarantool.Familiarity with OpenResty.Exposure to CI/CD pipelines and automated testing frameworks.Experience:Minimum 1 year of back-end development experience (required).Language Requirements:Mandarin (required)Work Authorisation:Must have legal work authorisation in the United Kingdom (required)