Opportunities in United Kingdom

About us @Symphony Secure. Connected. Intelligent. Symphony is an AI-powered communication and technology company fueled by interconnected platforms: messaging, voice, directory and analytics. Our end-to-end encrypted technologies enable over 1,400 institutions to accelerate AI impact, prioritize data security, navigate complex regulatory compliance and optimize business interactions.   Role Description: We are seeking a seasoned  Senior Backend Software Engineer to join our Market Voice and Video (MVV) development team. The MVV team owns the core audio and video communication infrastructure within the Symphony app, heavily utilizing WebRTC. As a senior member of this small, agile team, you won’t just maintain server-side media backend services, you will also drive architectural decisions, mentor team members, and take full ownership of robust, scalable backend systems. We are incredibly passionate about engineering excellence and CI/CD best practices. If you are someone who proactively shares ideas, challenges the status quo, and takes extreme accountability for deliverables, you'll fit right in.   Responsibilities Architect & Implement: Lead the design, implementation, and testing of highly scalable server-side microservices utilizing Java (Spring Boot) and TypeScript, ensuring optimal interaction with the broader Symphony ecosystem. CI/CD Leadership: Drive and evolve our Continuous Integration and Continuous Deployment (CI/CD) strategies, keeping Jenkins at the center of our automation pipeline. Cross-Functional Collaboration: Partner closely with product management to define technical requirements and collaborate across engineering teams to execute seamless product integrations. System Reliability: Investigate complex production issues or performance bottlenecks.Document thorough failure analyses, post-mortems, and root cause analyses (RCA) to continuously improve platform resilience. Mentorship & Quality: Lead constructive, collaborative backend design sessions and code reviews. Elevate the team's engineering standards by mentoring junior and mid-level developers.   Required Qualifications Education & Experience: BS/MS in Computer Science, Engineering, or a related field, with 7+ years of practical, hands-on experience in production software development. Backend Expertise:  Deep, expert-level proficiency in Java and its ecosystem, with extensive experience building enterprise microservices using the Spring Framework (Spring Boot). Professional experience writing clean, scalable backend code in TypeScript (e.g., Node.js ecosystem). DevOps & Infrastructure: Strong experience working with containerization, orchestration, and Infrastructure as Code (IaC) tools, specifically Docker, Kubernetes (K8s), Terraform, Git, and Jenkins. Cloud Proficiency: Proven experience designing, deploying, and maintaining high-availability services within GCP and/or AWS cloud environments. Soft Skills: Exceptional proactive communication skills, a highly collaborative mindset, and a proven track record of end-to-end delivery ownership.   Standout Qualifications (and What You'll Learn Here) Direct experience working with WebRTC, media streaming backend services, or audio/video protocols Ability to read and understand basic C++ Knowledge of the SIP and RTP protocols Core understanding of Session Border Controllers (SBC), Media conference servers, and Selective Forwarding Units (SFU)   Compensation: Salary Range: £55,000 - 65,000 base salary per year Bonus Plan   Benefits and Perks: Regional specific competitive benefits Build your own Benefits (BYOB) perk Local events, team building, and development opportunities    We are an equal opportunity employer and value diversity at our company. We do not discriminate on the basis of race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. We will ensure that individuals with disabilities are provided reasonable accommodation to participate in the job application or interview process, to perform essential job functions, and to receive other benefits and privileges of employment.