OneChronos

The Smart Market for Institutional Investors

Software Engineer, Data Platform

$115K - $200K3 New York, NY, US / Amsterdam, NH, NL / London, England, GB / Tokyo, JP Job type Full-time Role Engineering, Data science Experience 1+ years Visa US citizen/visa only Skills Python, Rust, TypeScript, SQL Apply to OneChronos and hundreds of other fast-growing YC startups with a singleprofile. Apply to role 7

About the role

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. We 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. The 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. This role is based in one of our offices in New York, London, or Amsterdam, with hybrid flexibility. What Youll Do

• Work with engineers and business teams to understand our datasets and build systems to store, process, and productionize them.
• Develop and maintain reliable data pipelines and workflow systems for large-scale data ingestion and transformation.
• Build internal services and tooling that support analytics, automation, and data operations.
• Implement ETL and data transformation processes for analytical databases and internal applications.
• Develop and maintain workflow orchestration for complex data processes.
• Optimize storage, retrieval, and processing performance across large datasets.
• Partner with analysts and researchers to support data modeling and analytics workflows.
• Monitor and troubleshoot data infrastructure to ensure reliability and data integrity.
• Continuously improve the platform through better system design, tooling, and engineering practices.

Who You Are

• You have a Bachelor's degree in Computer Science, Engineering, or a related field, or equivalent hands-on experience.
• You 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).
• Youve worked with workflow orchestration systems used to manage complex data pipelines (Temporal, Airflow, Dagster, or similar).
• Youre familiar with columnar data formats such as Parquet or Arrow.
• You have experience working with large-scale datasets and high-volume data pipelines in production environments.
• Experience working with analytics platforms,data providers or financial data systems is a plus.
• You have an entrepreneurial mindsetand genuinely enjoy building thingsand solving hard problems.

OneChronos is committed toequal employment opportunitiesto all employeesand applications regardlessof academic area of study,race,color,religion creed age,national originor ancestry ethnicity sex sexual orientation gender identityor expression disability militaryor veteran statusor any other categoryprotected by federal stateor local law.As an equal opportunity employer,we recognize that diversityis a huge positive attributeand we welcome the differencesand benefits that a diverse culture brings.

About OneChronos

OneChronos is a technology company at the intersection of Capital Markets Machine Learningand Auction Theory.Were bringing "Smart Markets,"the academic term formarkets that match counterpartiesusing mathematical optimization,to finance.Smart Markets have aproven abilityto outperform traditional auctions,and the theory underpinning themwas the subjectofthe 2020 Nobel Prizein Economics. Our goalis to expandthe pieof trades that can occurby empowering userswith venue-level tools tob better manageand express their tradingor risk management objectives.OneChronosis a Y Combinator alumand venture backed start-up companywith officesin New York Citys Soho neighborhood.Takea lookatour launch poston Hacker Newsformore information:https://news.ycombinator.com/item?id=30247159 Were a companyof mostly engineers,founded by engineers,and every personat the company isan individual contributorin some form.