{"id":141568,"url":"https://alion.io/job/onechronos-software-engineer-data-platform-2","title":"Software Engineer, Data Platform","company":{"id":703946,"name":"Y Combinator","domain":"ycombinator.com","url":"https://alion.io/company/y-combinator","size_band":"51-200","is_staffing_agency":false,"employer_type":"direct","is_intermediary":true,"listed_via":null,"ats_vendor":"Work at a Startup","truth_index":null},"role":"Backend","role_family":"Backend","seniority":"junior","employment_type":"full_time","work_mode":"on_site","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["New York, United States"],"countries":["US"],"hiring_countries":[],"hiring_countries_total":0,"salary":{"min":115000,"max":200000,"currency":"USD","period":"year","gross":null,"usd_annual":200000},"salary_estimate":null,"experience_years_min":1,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"ETL/ELT","optional":false},{"name":"Python","optional":false},{"name":"Rust","optional":false},{"name":"SQL","optional":false},{"name":"TypeScript","optional":false},{"name":"Dagster","optional":true}],"status":"live","first_seen_at":"2026-08-27T23:53:37Z","employer_posted_date":"2026-10-12","last_verified_at":"2026-10-17T13:31:28Z","board_verified":true,"closed_at":null,"days_open":50,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":50},"description":"Our systems operate at the massive speed and scale of algorithmic trading. We process terabytes of data and billions of rows each day, and every layer of the platform must be engineered for performance and reliability. As a small team, we are continuously evolving our analytics platform to keep pace with growing datasets and increasingly complex analytical workloads.\nWe are seeking a software engineer who enjoys building the systems that make large-scale data usable. This role sits at the intersection of data engineering and backend development, focused on building and improving the infrastructure that powers our analytics platform. That includes designing data pipelines, workflow orchestration, and internal tooling that supports high-volume, time-sensitive data processing.\nThe ideal candidate is comfortable working with both real-time and historical data streams and has experience managing end-to-end data workflows. You will help design and maintain the services, pipelines, and platform infrastructure that support our analytics initiatives, working closely with both engineering and the business to turn complex datasets into usable systems.\nThis role is based in one of our offices in New York, London, or Amsterdam, with hybrid flexibility.\nWhat You’ll Do\nWork with engineers and business teams to understand our datasets and build systems to store, process, and productionize them.\nDevelop and maintain reliable data pipelines and workflow systems for large-scale data ingestion and transformation.\nBuild internal services and tooling that support analytics, automation, and data operations.\nImplement ETL and data transformation processes for analytical databases and internal applications.\nDevelop and maintain workflow orchestration for complex data processes.\nOptimize storage, retrieval, and processing performance across large datasets.\nPartner with analysts and researchers to support data modeling and analytics workflows.\nMonitor and troubleshoot data infrastructure to ensure reliability and data integrity.\nContinuously improve the platform through better system design, tooling, and engineering practices.\nWho You Are\nYou have a Bachelor's degree in Computer Science, Engineering, or a related field, or equivalent hands-on experience.\nYou bring around 3-5 years of experience building internal data platform tooling or services that support large-scale data processing and analytics workflows (primarily using Python and SQL; Rust is a plus).\nYou’ve worked with workflow orchestration systems used to manage complex data pipelines (Temporal, Airflow, Dagster, or similar).\nYou’re familiar with columnar data formats such as Parquet or Arrow.\nYou have experience working with large-scale datasets and high-volume data pipelines in production environments.\nExperience working with analytics platforms, data providers, or financial data systems is a plus.\nYou have an entrepreneurial mindset and genuinely enjoy building things and solving hard problems\nOneChronos is committed to equal employment opportunities to all employees and applications regardless of academic area of study, race, color, religion, creed, age, national origin or ancestry, ethnicity, sex, sexual orientation, gender identity or expression, disability, military or veteran status, or any other category protected by federal, state or local law. As an equal opportunity employer, we recognize that diversity is a huge positive attribute and we welcome the differences and benefits that a diverse culture brings.","description_format":"text","description_chars":3514,"description_truncated":false,"requirements":{"experience_years_min":1,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":{"level":"bachelor","optional":true},"security_clearance":false,"languages":[]},"benefits":[],"hiring_locations":[],"hiring_excludes":[],"relocation_offered":false,"industries":["Venture Capital","Angel Networks & Startup Accelerators"],"lifecycle":[{"event":"open","at":"2026-08-27T23:53:37Z"}],"visa":[],"liveness":{"score":16,"band":"cold","label":"Long shot","p_open":1,"p_active":0.446,"p_room":0.36,"age_days":50,"expected_fill_days":28,"reasons":["conf:2","win:tail","crowd:junior"],"computed_at":"2026-10-17T05:46:00Z"},"pay":{"stated_usd_annual":200000,"is_top_pay":true},"html_url":"https://alion.io/job/onechronos-software-engineer-data-platform-2","json_url":"https://alion.io/job/onechronos-software-engineer-data-platform-2.json","meta":{"generated_at":"2026-10-17T15:37:00Z","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":21162,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-10-18T00:00:00Z"}},"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":703946},"rest":"https://alion.io/mcp/rest/get_company?id=703946"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Fonechronos-software-engineer-data-platform-2"},{"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%2Fonechronos-software-engineer-data-platform-2"},{"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%2Fonechronos-software-engineer-data-platform-2"},{"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/onechronos-software-engineer-data-platform-2\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Fonechronos-software-engineer-data-platform-2"}]}