Senior Software Development Engineer in Test (Media)

Location: Stockholm

Department: Engineering

About us @Symphony

We’ve spent the last 10 years building a communication and markets technology company, powered by interconnected platforms: messaging, voice, directory and analytics.  Over 1000 institutions use our modular technology built for global finance. Security is in our DNA with uncompromising data protection, end-to-end encryption and resilient architecture, all created on a foundation of trust with our customers . 

But that was only chapter one. We’re now building on our purpose-built network, expanding AI-powered, real-time collaboration, redefining flexibility with fully cloud-native software with our trader voice product, and rethinking the industry’s approach to identity verification, connection and intelligence. .

The opportunity and our ambition are huge. But we need passionate, dedicated individuals to get there. At Symphony we work hard and fast. Our unique blend of technology and financial services makes it an environment you won't get elsewhere.

Role Description

We are looking for a highly skilled and motivated Senior SDET (Software Development Engineer in Test), Media to take a lead role in ensuring the quality and reliability of our media backend and frontend components. In this role, you will design, develop, and maintain test automation frameworks, collaborate with cross-functional teams, and drive a shift-left testing mindset across the organization.

As a technical leader, you will be responsible for supporting the execution of the Media Test Strategy, ensuring efficient test coverage, and contributing to the delivery of high-quality media features. Your expertise in media technologies (WebRTC, SIP), strong programming background, and ability to coordinate across teams will make you a key player in building scalable and reliable media solutions.

If you are passionate about media technologies, automation, and quality leadership, we would love to hear from you!

Responsibilities:

• Take ownership of the quality strategy for media backend and frontend components.
• Design, implement, and maintain robust and scalable test automation frameworks.
• Collaborate closely with developers, product managers, and QA engineers to drive shift-left testing practices.
• Support and improve automated testing across different environments, including VDI, Cloud (GCP/AWS), and Windows 10/11 setups.
• Validate and troubleshoot real-time communication systems (WebRTC, SIP).
• Perform code reviews, mentor other SDETs, and ensure adherence to testing best practices.
• Coordinate with multiple teams and products to ensure seamless integration and quality delivery.
• Contribute to continuous improvement of test processes, tools, and methodologies.
• Support the execution and evolution of the Media Test Strategy.

Required Qualifications:

• Technical Skills
  • Strong programming skills in at least one language: Java, C#, C++, or TypeScript (C# is preferable).
  • Proven experience in designing and maintaining test automation frameworks.
  • Hands-on experience with media technologies (WebRTC, SIP).
  • Familiarity with cloud environments (GCP/AWS) and VDI setups.
  • Experience with Windows 10/11 environments.
  • Knowledge of CI/CD pipelines, version control (Git), and modern testing tools.
  • Strong understanding of software testing methodologies and shift-left practices.
• Soft Skills
  • Demonstrated leadership in driving quality initiatives across teams.
  • Excellent communication, collaboration, and coordination skills.
  • Strong problem-solving and analytical thinking abilities.
  • Ability to work in a fast-paced, cross-functional, and global environment.
  • Self-driven, proactive, and passionate about quality and automation.
• Education & Experience
  • Bachelor’s or Master’s degree in Computer Science, Software Engineering, or related field (or equivalent practical experience).
  • 5+ years of experience in software testing or SDET roles, with at least 2+ years in a senior/lead capacity.
  • Previous experience working in media-focused environments is highly desirable.

Compensation:

• Competitive salary
• Bonus Plan
• Benefits and Perks vary based on location.

Benefits and Perks:

• Regional specific competitive benefits
• Build your own Benefits (BYOB) perk
• Many other fun and exciting benefits and activities!

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.