Software Engineer

Claims; United States; Remote; USD 110,000 - 170,000; Full time

Job summary

Claims AI is a remote-first startup building a data layer for scientific claims, with a global team. We seek a Software Engineer (Python, full-stack) to maintain and expand our AI-driven research platform, handling document processing, pipelines, and dashboards.

You will work on backend services, API design, and frontend interfaces, joining a hands-on team that ships quickly while maintaining code quality and security. Start in Dec 2026 or Jan 2027.

Qualifications

• 1–5 years of professional software engineering experience.
• Strong Python skills for building maintainable services and data processing apps.
• Experience designing and consuming HTTP APIs with JSON, validation, auth and error handling.
• Working knowledge of TypeScript/JavaScript and React.
• Practical SQL and relational database experience, including data modelling and migrations.
• Comfort with Linux and command-line tools for debugging and investigation.
• Experience with Git, PRs, code review, CI
• Understanding of secure engineering practices and data handling.
• Ability to navigate a codebase and make focused, tested changes.

Responsibilities

• Build and maintain Python backend services, APIs, CLI tools, and workflows.
• Develop and improve web dashboards using TypeScript, React, and modern web frameworks.
• Maintain data pipelines ingesting papers, extracting structured info, and evaluating results.
• Integrate external APIs and AI model providers with robust error handling and retries.
• Work with relational databases and storage, incl. migrations and data integrity checks.
• Troubleshoot production issues, address root causes, and add regression coverage.
• Support deployment automation, CI, logging, and monitoring.
• Refactor code, manage dependencies, and write automated tests; conduct reviews.
• Collaborate with engineering and research to turn requirements into reliable software.

Skills

Python

TypeScript

REST APIs

SQL

Linux

Git

CI/CD

Automated testing

Security

Tools

PostgreSQL

React

FastAPI

Docker

Job description

Build the data layer AI needs to do science

Application deadline: 16 Nov 2026 23:59 CET

About Claims AI ate the Internet, but it can't digest science yet. A paper is thousands of words of prose written for humans, but an AI agent doing research needs to know what was claimed, what evidence supports it, and how far to trust it. Claims turns the scientific literature into exactly that: every claim, tied to its evidence, as structured data that models and agents can query. We're a startup and run as Subnet 111 on Bittensor. Since our mainnet launch on 28 August 2026, an open competition of miners has processed more than 10,000 papers, and every record was checked by our validator before it entered the dataset. The competition keeps raising the bar: miners keep finding ways to beat our own reference pipeline, and every win becomes part of the standard the whole network is scored against.

The team Claims was founded by two professors of economics and a senior engineer. Philipp Koellinger, CEO, is a professor of economics and an experienced entrepreneur: founder of DeSci Labs and the DeSci Foundation, and co-builder of SciWeave with Ogban. Christian Roessler, co-founder, is a professor of economics and game theorist. He designs the incentive mechanism that makes the miner competition work. Ogban Ugot, engineering, is a senior backend and machine learning engineer. He built SciWeave, the Claims miner, validator and data pipeline, and you will work with him every day. You would be the fourth person on the team and our second engineer.

Our culture

We are a fully remote team spread across Europe, Africa and the US West Coast. We have a flat hierarchy and move fast towards clearly defined goals. We think deep, don't shy away from difficult problems or conversations, and we ship relentlessly. The code you will write will run on a live network within your first weeks, and you own real things from day one. We are an AI-native company and expect you to be an AI-native Software Engineer we can trust.

About the role

Position: Software Engineer (Python, full-stack) Location: Remote. You need to be able to join our team meetings in the afternoon, Central European Time. Type: Full-time contractor. Start in December 2026 or January 2027. We're looking for a Software Engineer to help maintain and build Claims and its supporting applications, services, and developer tools. Claims turns scientific research into structured claims and supporting evidence through document processing, AI pipelines, and automated evaluation. This is a hands-on, backend-focused full-stack role.

Responsibilities

• Build and maintain Python backend services, APIs, command-line tools, and background processing workflows.
• Develop and improve web dashboards and internal review tools using TypeScript, React, and modern web frameworks.
• Maintain pipelines that ingest research papers, process documents, extract structured information, and evaluate results.
• Integrate external APIs and AI model providers, handling validation, retries, timeouts, rate limits, and usage costs.
• Work with relational databases and object storage, including schema changes, migrations, queries, and data integrity checks.
• Investigate bugs and production issues across services, pipelines, and interfaces; address root causes and add useful regression coverage.
• Help maintain deployment automation, continuous integration, logging, monitoring, and operational documentation.
• Improve existing code through practical refactoring, dependency maintenance, automated tests, and code review.
• Collaborate with engineering and research colleagues to turn requirements and experimental workflows into reliable software.

Required skills and experience

• Typically 1–5 years of professional software engineering experience, or equivalent practical experience delivering and maintaining production software.
• Strong Python skills, including building maintainable services or data processing applications, managing dependencies, and writing automated tests.
• Experience designing, consuming, and troubleshooting HTTP APIs, with a sound understanding of JSON, validation, authentication, and error handling.
• Working knowledge of TypeScript or JavaScript and experience contributing to React applications or a comparable modern frontend framework.
• Practical SQL and relational database experience, including data modelling, migrations, and debugging queries.
• Confidence working in Linux environments and using the command line to investigate logs, configuration, processes, and service failures.
• Experience with Git, pull requests, code review, automated testing, and continuous integration.
• An understanding of secure engineering practices, including access controls, secrets management, and careful handling of private data.
• The ability to navigate an existing codebase, trace issues across components, and make focused, well‑tested changes.
• Clear communication, practical problem‑solving, and the judgment to work independently while asking for input when requirements or risks are unclear.

Nice to have

• Experience with FastAPI, Pydantic, PostgreSQL, Supabase, Next.js, or similar tools.
• Experience integrating LLM APIs, building AI‑assisted workflows, or evaluating model outputs for accuracy, reliability, latency, and cost.
• Familiarity with PDF parsing, OCR, document extraction, scientific datasets, or evidence provenance.
• Experience with distributed jobs, asynchronous processing, reproducible pipelines, or automated benchmarking.
• Familiarity with Docker, Ansible, systemd, GitHub Actions,