Senior Software Development Engineer in Test (Media)

Reposted 17 Days Ago
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Stockholm, SWE
In-Office
Senior level
Financial Services
The Role
The Senior SDET will lead quality initiatives for media components, develop test automation frameworks, and collaborate cross-functionally to ensure quality delivery.
Summary Generated by Built In

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:

  • 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.


Skills Required

  • 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
  • 5+ years of experience in software testing or SDET roles, with at least 2+ years in a senior/lead capacity
  • Bachelor's or Master's degree in Computer Science, Software Engineering, or related field

Symphony Compensation & Benefits Highlights

The following summarizes recurring compensation and benefits themes identified from responses generated by popular LLMs to common candidate questions about Symphony and has not been reviewed or approved by Symphony.

  • Flexible Benefits Feedback suggests a distinctive “Build Your Own Benefits (BYOB)” stipend/allowance is available alongside core regional benefits, enabling more individualized choices. Benefits are also framed as region-specific and competitive, implying structured options adapted to local norms.
  • Healthcare Strength Healthcare and benefits components are portrayed as a relative bright spot, with strong marks for the benefits package in the U.S. Core coverage such as health insurance is consistently indicated as part of the overall offering.
  • Leave & Time Off Breadth Time-off provisions are positioned as generous, including references to uncapped/unlimited PTO and observed holidays. This can translate into stronger perceived flexibility when usage norms align with team expectations.

Symphony Insights

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The Company
HQ: New York, NY
690 Employees
Year Founded: 2014

What We Do

Symphony is the most secure and compliant markets’ infrastructure and technology platform, where solutions are built or integrated to standardize, automate, innovate and liquefy financial services workflows. The Symphony platform is a vibrant community of over half a million financial professionals from 1300+ market participants underpinned by a trusted directory and omnichannel interactions across chat, voice, web, meetings and more. Symphony powers over 2,000 community-built applications and bots. Symphony was founded in October 2014 and is headquartered in New York City, with offices in London, Palo Alto, Hong Kong, Singapore, Tokyo, Stockholm, and Sophia-Antipolis.

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