Internship Software Developer In Test Jobs in Princeton, NJ

Job Purpose:

BTIG seeks a hands-on Software Development Engineer in TEST (SDET) in Technology Quality Management team to generate, execute, debug, and maintain automated tests across critical workflows. Reporting to the Head of QA, you will own test suites, improve reliability, investigate failures, and provide clear quality evidence to support daily engineering decisions. You will work on a lean, hands-on team where ownership, judgment, and follow-through matter.

You will also work with and improve OpenCode-based skills and frameworks that accelerate test engineering workflows. Prior hands-on experience with terminal/TUI agentic tools applied to real test engineering is required.

This position is open only in our New York City or San Francisco offices, with a minimum requirement of working 4+ days per week in-office and Eastern Time Zone hours.

Duties & Responsibilities:

• Build and maintain Playwright and TypeScript-based automated tests across UI, API, integration, and regression coverage areas
• Translate product requirements, defects, and API specifications into reliable automated test cases
• Investigate flaky or failing tests, identify root causes, and produce reproducible defect evidence
• Design and maintain OpenCode-based agent workflows for test generation, failure triage, regression selection
• Apply context engineering and cost-efficiency strategies without weakening verification quality
• Develop and maintain test data approaches, including fixtures, synthetic data, and environment-safe datasets for repeatable automation
• Integrate automation into CI/CD pipelines with reliable gating, clear failure reporting, and retained test artifacts

Requirements & Qualifications:

• 3+ years hands-on SDET experience with demonstrated ownership of automated tests across UI, API, contract, integration, and regression layers
• Strong hands-on experience with Playwright and TypeScript, including fixtures, traces, parallel execution, and CI artifact analysis
• Experience using AI-assisted development or test tools in terminal, CLI, or editor-based workflows (OpenCode, Claude Code, Codex, etc.); proven ability to critically review and correct agent-generated tests, commands, and code
• Working knowledge of agent architecture: primary/subagents, scoped tool permissions, repo memory, model routing, and human-in-the-loop review
• CI/CD integration experience (GitHub Actions, Jenkins, or equivalent)
• API testing fundamentals: REST, OpenAPI, contract testing, auth/authz boundaries, and negative-path validation
• Strong debugging discipline for test failures, flaky behavior, and application defects
• Nice to have: performance, load, or chaos engineering exposure; open-source contributions to test or agentic tooling; Financial services or regulated environment experience

Important Notes:

• Must be authorized to work full time in the U.S., BTIG does not offer sponsorship for work visas of any type
• No phone calls please, the applicant will be contacted within two weeks if successful

About BTIG:

BTIG is a global financial services firm specializing in institutional trading, investment banking, research and related brokerage services. With an extensive global footprint and more than 700 employees, BTIG, LLC and its affiliates operate out of 20 cities throughout the U.S., and in Europe, Asia and Australia. BTIG offers execution, expertise and insights for equities, equity derivatives, ETFs and fixed income, currency and commodities. The firm's core capabilities include global execution, portfolio, electronic and outsource trading, investment banking, prime brokerage, capital introduction, corporate access, research and strategy, commission management and more.
All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, protected veteran status, or disability status. BTIG is an equal opportunity employer Minorities/Females/People with Disabilities/Protected Veterans/Sexual Orientation/Gender Identity.

Compensation: 

• BTIG offers a competitive compensation and benefits package. Salary range is based on a variety of factors including, but not limited to, location, years of applicable experience, skills, qualifications, licensure and certifications, and other business and organization needs.
• The current estimated base salary range for this role is $110,000.00 - $140,000.00 per year. Please note that certain positions are eligible for additional forms of compensation such as discretionary bonus or overtime. 

Disclaimer: https://www.btig.com/disclaimer.aspx.