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Senior Software Engineer, Media

Belfast, Northern Ireland

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.

 

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Equal Opportunity Monitoring

We are an Equal Opportunities Employer. We aim to provide equality of opportunity to all persons regardless of their religious belief, political opinion, sex, gender reassignment, marital or civil partnership status, pregnancy or maternity, disability, race (including colour, nationality, ethnic or national origins, and Irish Traveller status), age, or sexual orientation. We do not discriminate against job applicants or employees and aim to select the best person for the job.

We monitor the community background and sex of our job applicants and employees in order to demonstrate our commitment to promoting equality of opportunity in employment and to comply with our duties under the Fair Employment and Treatment (NI) Order 1998.

Regardless of whether they actually practice a particular religion, most people in Northern Ireland are perceived to be members of either the Protestant or Roman Catholic communities. We are therefore asking you to indicate your community background by selecting the appropriate option within the Religion field.

You are not obliged to answer the questions on this application and you will not suffer any penalty if you choose not to do so. Nevertheless, we encourage you to answer them. Your identity will be kept anonymous and your answers will be treated with the strictest confidence, separate from the recruitment panel.

If you do not answer the question above, we are encouraged to use the residuary method of making a determination, which means that we can make a determination as to your community background on the basis of personal information supplied by you in your application form. 

Note: If you answer these questions about community background and sex, you are obliged to do so truthfully, as it is a criminal offence under Regulation 20 of the Fair Employment (Monitoring) Regulations (NI) 1999 to knowingly give false answers to these questions.

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