{"id":850997,"url":"https://alion.io/job/topsteptrader-senior-software-development-engineer-in-test-sdet","title":"Senior Software Development Engineer in Test (SDET)","company":{"id":720700,"name":"Topstep","domain":"topstep.com","url":"https://alion.io/company/topstep-2","size_band":"51-200","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Greenhouse","truth_index":null},"role":"QA","role_family":"QA","seniority":"senior","employment_type":null,"work_mode":"remote","remote_scope":"stated_countries","remote_scope_basis":"board_field","remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["United States"],"countries":["US"],"hiring_countries":["US"],"hiring_countries_total":1,"salary":{"min":155000,"max":190000,"currency":"USD","period":"year","gross":null,"usd_annual":190000},"salary_estimate":null,"experience_years_min":5,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"ArgoCD","optional":false},{"name":"CI/CD","optional":false},{"name":"Cypress","optional":false},{"name":"Kubernetes","optional":false},{"name":"LLM","optional":false},{"name":"Playwright","optional":false},{"name":"Rest API","optional":false},{"name":"Selenium","optional":false},{"name":"Slack","optional":false},{"name":"Terraform","optional":false},{"name":"TypeScript","optional":false},{"name":"WebSockets","optional":false},{"name":"C#","optional":true},{"name":"GitHub Actions","optional":true},{"name":"JavaScript","optional":true},{"name":"React.js","optional":true}],"status":"live","first_seen_at":"2026-07-23T13:26:29Z","employer_posted_date":"2026-08-21","last_verified_at":"2026-11-03T22:49:01Z","board_verified":true,"closed_at":null,"days_open":103,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":103},"description":"Summary:\nTopstep operates a real-time futures trading platform (TopstepX). Here, correctness isn't cosmetic: a defect in order handling, market-data delivery, or a balance/P&L calculation can cost a trader real money. We're hiring a Senior SDET to drive test automation across the platform - building the frameworks, shaping coverage decisions, and raising the quality bar alongside our existing SDETs.\nWe lean heavily on AI-assisted test generation to produce broad, meaningful coverage at scale, and you'll help extend that capability. You'll partner with product engineering teams to design for testability early, automate the journeys that matter most, and strengthen the testing practice across the group. This role suits a strong technical tester who thinks in systems and can build scalable test infrastructure while mentoring others.\nKey Responsibilities\nDrive test automation across API, UI, and end-to-end - shaping where automated coverage delivers the most value against execution time and maintenance cost.\nUse and extend our AI-assisted test-generation tooling to produce and maintain broad, verification-focused coverage - applying judgment to curate, validate, and prune what the models generate rather than trusting it wholesale.\nBuild and maintain scalable test frameworks and infrastructure that run in CI/CD, including for real-time paths: order lifecycle, market-data streams over WebSocket, and financially material calculations.\nPartner with product and engineering early to define testability requirements and quality standards, rather than validating after the fact.\nLead by example on test code quality - clean, maintainable, well-documented, and a model for the team.\nOwn the signal from the test suite: triage failures fast, keep flakiness low, and make results and quality metrics visible and trustworthy to engineering.\nSurface and drive resolution of quality gaps, systemic testing weaknesses, and test-related technical debt.\nMentor engineers and SDETs on automation patterns, AI-assisted testing workflows, non-functional testing (performance, load, resilience), and a quality-first mindset.\nRequired Qualifications and Key Competencies\n5 + years in software testing with a strong focus on test automation and framework development.\nExpert programming skills; writes production-quality test code in TypeScript.\nHands-on experience building test automation frameworks from scratch (Playwright preferred; Cypress, Selenium, or similar also relevant).\nComfort using AI/LLM-assisted tooling to accelerate test creation and verification, with the judgment to validate and curate generated output rather than accept it at face value.\nStrong API and real-time testing: RESTful services and WebSocket/streaming systems, with a solid grasp of backend testing patterns.\nSolid grasp of our stack - a React/TypeScript front end and C#/.NET backend services, plus databases and the service architecture behind them - enough to test it deeply.\nCI/CD experience integrating automated tests into deployment pipelines (GitHub Actions).\nProven ability to design test strategies that balance coverage, execution time, and maintenance overhead.\nStrong debugging across the full stack - frontend, backend, database, and infrastructure.\nExcellent communication; can advocate for quality and influence engineering practice.\nPreferred\nNon-functional testing experience: performance, load, and resilience.\nFamiliarity with ArgoCD, Terraform, and Kubernetes.\nExperience testing trading, fintech, or other low-latency/financially sensitive systems.\nContract / consumer-driven testing between services.\nObservability-driven testing (using logs, metrics, traces to validate behavior).\nCompany Culture & Perks\nTopstep is an engaging working environment that ranges from fully remote to hybrid. We foster a culture of collaboration by keeping cameras on during meetings and maintaining a robust Slack environment for communication. \nSeven Company-paid Holidays and generous Family Leave. Paid time off is front-loaded.\nCompetitive 401(k) matching, health, dental, and vision insurance are offered for full-time employees. \nVacations are encouraged with a bonus for taking 5 consecutive days. Topstep offers a food and groceries budget and contributes towards health and wellness. \nNew Hire Base Salary Range\n$155,000 - $190,000 annually.\nThe compensation offered will take into account the internal compensation structure and may vary depending on the candidate's geographic region, job-related knowledge, skills, and experience, among other factors.\nThis position is eligible for a performance-based bonus as provided by the plan terms and governing documents.\nEqual Opportunity Employer \nTopstep is an Equal Opportunity Employer. We are committed to fostering an inclusive environment where all employees and applicants are valued. All qualified candidates will receive consideration for employment without regard to race, color, religion, gender, gender identity or expression, sexual orientation, national origin, age, disability, or veteran status, in compliance with applicable federal, state, and local laws.\nInterested in the role? Apply today with your resume!\nThe collection, use, and handling of your data provided in response to this job posting is described further in our Privacy Policy. If you are a California resident, please review our California Notice at Collection.\nNotice of Use of Artificial Intelligence in Recruitment and Hiring: Notice Pursuant to 775 ILCS 5/2-102(L). Topstep LLC uses artificial intelligence (\"AI\") in connection with its recruitment and hiring process. Examples include, but are not limited to, AI tools used to improve job descriptions, generate interview questions, draft communications, assist with scheduling, and source candidates, as well as AI features built into third-party platforms such as LinkedIn, Indeed, and Glassdoor. Topstep will not use AI that has the effect of subjecting employees or applicants to discrimination on the basis of any protected class under the Illinois Human Rights Act.\nThe collection, use, and handling of your data provided in response to this job posting is described further in our Privacy Policy. If you are a California resident, please review our California Notice at Collection.","description_format":"text","description_chars":6270,"description_truncated":false,"requirements":{"experience_years_min":5,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":null,"security_clearance":false,"languages":[]},"benefits":["Parental leave","Vision insurance"],"hiring_locations":[{"name":"United States","iso":"US","kind":"country"}],"hiring_excludes":[],"relocation_offered":false,"industries":["Online Brokerage & Trading Platforms"],"lifecycle":[{"event":"open","at":"2026-09-13T03:41:27Z"}],"visa":[],"liveness":{"score":14,"band":"cold","label":"Long shot","p_open":1,"p_active":0.506,"p_room":0.28,"age_days":102,"expected_fill_days":41,"reasons":["conf:2","velocity","win:tail","crowd:"],"computed_at":"2026-11-03T05:54:40Z"},"pay":{"stated_usd_annual":190000,"is_top_pay":true},"html_url":"https://alion.io/job/topsteptrader-senior-software-development-engineer-in-test-sdet","json_url":"https://alion.io/job/topsteptrader-senior-software-development-engineer-in-test-sdet.json","meta":{"generated_at":"2026-11-04T01:12:07Z","cache_seconds":300,"methodology":"https://alion.io/methodology","terms":"https://alion.io/terms","contact":"https://alion.io/contact","api":"https://alion.io/developers","about":"Alion is a live layer of people, companies and AI agents: who they are, whether they are real and active right now, what they do and how to work with them, readable by people and by agents and paid per call.","catalog":"https://alion.io/catalog.json","usage":{"tier":"crawler_verified","counted_by":"address","units_charged":1,"used_today":1824,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-11-05T00:00:00Z"}},"offers":[{"id":"company.slices","title":"One company in depth, by slice","status":"live","price":{"credits":0.02,"usd":0.002,"plus_per_slice":{"credits":0.05,"usd":0.005}},"unit":"per company, plus each slice with data","note":"the employer in depth","call":{"mcp_tool":"get_company","arguments":{"id":720700},"rest":"https://alion.io/mcp/rest/get_company?id=720700"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Ftopsteptrader-senior-software-development-engineer-in-test-sdet"},{"id":"market.stats","title":"A market slice: pay, demand and time to fill","status":"live","price":{"credits":1,"usd":0.1},"unit":"per slice","note":"pay, demand and time to fill for this role and place","call":{"mcp_tool":"market_stats"},"human":"https://alion.io/catalog?offer=market.stats&for=job%2Ftopsteptrader-senior-software-development-engineer-in-test-sdet"},{"id":"job.search","title":"Open jobs by role, technology, place, pay and visa","status":"live","price":{"credits":0.02,"usd":0.002},"unit":"per posting in a list","note":"similar open postings","call":{"mcp_tool":"search_jobs"},"human":"https://alion.io/catalog?offer=job.search&for=job%2Ftopsteptrader-senior-software-development-engineer-in-test-sdet"},{"id":"company.verify","title":"Is this company real and active right now","status":"pilot","price":null,"unit":"per company","request":{"url":"https://alion.io/catalog/request","method":"POST","body":"{\"offer\": \"company.verify\", \"for\": \"job/topsteptrader-senior-software-development-engineer-in-test-sdet\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Ftopsteptrader-senior-software-development-engineer-in-test-sdet"}],"agent":{"mcp":"https://alion.io/mcp/jobs","mcp_open":"https://alion.io/mcp/open","next":[{"tool":"get_job","arguments":{"id":850997}},{"tool":"search_jobs","arguments":{"company":"topstep.com","detail":"compact"}},{"tool":"match_people","arguments":{"job_id":850997},"note":"people open to offers who fit this vacancy"}],"note":"The same data through MCP tools: https://alion.io/mcp/open needs no sign-in (compact searches, postings, people); https://alion.io/mcp with an Alion account has everything. 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