Software Engineer (Machine Learning)

About CollinearAt Collinear, we help teams fearlessly ship AI.Frontier labs and AI-native companies use our SimLab to find capability gaps in their agents and generate high-quality data to close them. We believe that the next generation of AI progress won't come from just bigger models, but from more rigorous, long-horizon simulation and programmatic verification.SimLab allows researchers to spin up realistic environments, run agents through complex tasks, and surface failure modes under real-world conditions. We then close the loop by generating targeted synthetic data to retrain models, delivering measurable quality lift on the metrics that actually matter.About the RoleWe are looking for a talented Software Engineer (Machine Learning) with expertise in React and NextJs (JavaScript frameworks) for frontend development and backend development in Python and Fast API. The ideal candidate will have hands-on experience in DevOps technologies, testing frameworks, database management, and exposure to AI/ML or NLP/LLM projects.Key responsibilities include:Develop scalable, responsive web applications using modern frontend frameworks (React/Next.js)Design and implement high-performance backend solutions using Python and FastAPI, ensuring reliability and scalabilityCollaborate with cross-functional teams to define features, enhancements, and deliver product updatesImplement and maintain DevOps best practices for continuous integration and deployment using tools like Jenkins, AWS, Docker, and KubernetesWrite and maintain comprehensive unit, integration, and end-to-end tests using testing frameworksTroubleshoot and debug frontend and backend issues, ensuring timely resolution and system optimization.Work with both SQL and NoSQL databases, optimizing queries for efficient data managementCollaborate with AI/ML teams to build and deploy applications leveraging NLP and LLM technologiesAbout YouThere are a few specific things we’ll be looking for that will help you succeed in this role:Bachelor’s or Master’s degree in Computer Science/Engineering, or a related fieldExperience in full stack development with a focus on both frontend and backend technologiesProficiency in JavaScript frameworks (React/Next.js) for frontend developmentStrong backend development skills in Python (FastAPI) or similar languagesExperience with DevOps tools such as Jenkins, AWS, Docker, and Kubernetes for CI/CD pipelinesHands-on experience with testing frameworks and a Test-Driven Development (TDD) approachExpertise in SQL and NoSQL databases, with a solid understanding of database design and optimizationExperience in AI/ML or NLP/LLM projects is highly desirableContributions to open-source projects, with an active GitHub portfolio showcasing innovation and expertise, are preferredStrong problem-solving skills and the ability to work in a fast-paced, collaborative environmentPrior experience in top-tier technology companies or startups is a plusCollinear is an equal opportunity employer and values diversity. We do not discriminate on the basis of race, color, religion, sex, gender identity, sexual orientation, national origin, age, disability, veteran status, or any other characteristic protected by applicable law.The base salary range for this role in California is $150,000 to $250,000 per year, depending on experience, skills, and qualifications. This role will also be eligible for equity, benefits, and bonuses.Collinear provides reasonable accommodations for candidates with disabilities throughout the application and hiring process. If you need an accommodation, please contact us.Pursuant to applicable local ordinances, we will consider qualified applicants with arrest and conviction records.