Staff Software Engineer (Machine Learning, Full-stack)

Description:

• At River, we are building the world’s most trusted financial institution to empower people to take ownership of their financial lives through Bitcoin.
• We are looking for a staff software engineer to build and own data-heavy backend systems that power automation and decision-making across onboarding, risk, compliance, and operations.
• The work involves building reliable, scalable services, data pipelines, and internal tooling, including systems that integrate and leverage AI/ML in production.
• Our core stack includes Elixir, Python, and Postgres, with supporting data and analytical infrastructure.
• You will design, build, and own Elixir backend systems used across onboarding, fraud detection, compliance, and operations with a direct impact on the experience of hundreds of thousands of clients.
• You will build and maintain data pipelines, integrations, and analytics infrastructure for a rapidly growing team.
• You will develop internal tools used daily by operations and compliance teams.
• You will build and maintain training and inference infrastructure for machine learning models and contribute to models where appropriate.
• You will productionize outputs from machine learning models, heuristics, and LLM-based systems.
• You will partner closely with product management and operations to plan and scope new projects and initiatives.
• You will write high-quality, tested code and participate in code reviews.
• You will take long-term ownership of critical systems as River scales.

Requirements:

• You must have 6+ years of experience in software engineering.
• You should have designed, built, and maintained production systems at scale and understand how to build reliable systems.
• You need to take ownership of systems and be comfortable solving ambiguous problems.
• You must have experience working with data-heavy systems, pipelines, and complex integrations.
• You should be familiar with machine learning systems and how models are trained, deployed, and used in production.
• You need to have strong judgment around correctness, reliability, and operational risk.
• You should be excited about what we are building at River.

Benefits:

• A 100% remote option is available within the Americas and Europe, with offices in SF, NYC, and Columbus.
• The salary range is between $200,000 - $250,000 based on skills and experience, with no location adjustment.
• You will receive significant equity stock options.
• Medical, Dental, and Vision Benefits are provided.
• Unlimited PTO is offered.
• Parental Leave is separate from the regular PTO policy.
• A 401k plan is available.