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 looking for a highly skilled and motivated Senior SDET (Software Development Engineer in Test), C9 Trader to take a lead role in ensuring the quality and reliability of our C9 Trader application supporting both mobile and desktop clients. In this role, you will design, develop, and maintain scalable test automation frameworks, collaborate closely with developers, and drive a shift-left testing mindset within the engineering teams.
As a technical quality leader, you will bring strong expertise in frontend/backend testing, white box testing, and development practices. You will play a key role in supporting the execution of the C9 Trader Test Strategy, coordinating across teams and products, and ensuring the delivery of robust, secure, and performant backend solutions.
If you are passionate about e2e quality, test automation, and engineering excellence, we would love to hear from you!
Responsibilities:
- Take ownership of quality initiatives for C9 Trader components supporting mobile and desktop clients.
- Design, implement, and maintain test automation frameworks in frontend/backend and white box testing to validate APIs, services, and integrations.
- Work closely with developers to enable shift-left testing practices and embed quality earlier in the development lifecycle.
- Ensure reliable test execution across Cloud (GCP/AWS), Kubernetes, and Windows 10/11 environments, including physical Hardware lab PCs.
- Collaborate across teams and product lines to drive quality alignment and consistency.
- Mentor other SDETs and contribute to continuous improvement of test strategies, processes, and tools.
Required Qualifications:
- 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 a strong focus on backend systems.
- At least 2+ years in a senior or lead capacity, driving quality initiatives at scale.
- Strong programming skills in C# and TypeScript (as nice to have).
- Proven experience with frontend/backend testing and automation frameworks.
- Hands-on experience in white box testing of APIs, services, WebSocket connections, and backend systems.
- Familiarity with Windows 10/11 environments.
- Experience with cloud environments (GCP/AWS), Kubernetes, CI/CD pipelines, Git, and backend testing tools.
Compensation:
- Salary Range: 52,000 - 62,000 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.
Skills Required
- Bachelor's or Master's degree in Computer Science, Software Engineering, or a related field, or equivalent practical experience
- 5+ years of experience in software testing or SDET roles, focused on backend systems
- 2+ years of experience in a senior or lead capacity driving quality initiatives at scale
- Strong programming skills in C# and TypeScript
- Experience with frontend/backend testing and automation frameworks
- Hands-on experience with white-box testing of APIs, services, WebSocket connections, and backend systems
- Familiarity with Windows 10/11 environments
- Experience with GCP or AWS cloud environments
- Experience with Kubernetes, CI/CD pipelines, Git, and backend testing tools
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.
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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.
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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.
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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
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.
