River · 7 hours ago
Staff Software Engineer (Machine Learning, Full-stack)
United States
Full-time
Remote
Senior Level, Lead/Staff
$200K/yr - $250K/yr
6+ years expRiver is building the world’s most trusted financial institution to empower people with Bitcoin. They are seeking a staff software engineer to develop and manage data-heavy backend systems that enhance automation and decision-making across various operations.
BitcoinBlockchainCryptocurrencyFinancial ExchangesFinancial ServicesFinTech
Responsibilities
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
Build and maintain data pipelines, integrations, and analytics infrastructure for a rapidly growing team
Develop internal tools used daily by operations and compliance teams
Build and maintain training and inference infrastructure for machine learning models and contribute to models where appropriate
Productionize outputs from machine learning models, heuristics, and LLM-based systems
Partner closely with product management and operations to plan and scope new projects and initiatives
Write high-quality, tested code
Participate in code reviews
Take long-term ownership of critical systems as River scales
Qualification
Required
6+ years of experience in software engineering
You have designed, built, and maintained production systems at scale and understand how to build reliable systems
You take ownership of systems and are comfortable solving ambiguous problems
You have experience working with data-heavy systems, pipelines, and complex integrations
You are familiar with machine learning systems and how models are trained, deployed, and used in production
You have strong judgment around correctness, reliability, and operational risk
You're excited about what we are building at River
Preferred
Experience in fintech, fraud, risk, or compliance domains
You have worked with Elixir, Python, Postgres, and cloud data infrastructure
You have worked on machine learning or AI-powered systems
You have worked at a rapidly scaling company
Interest in Bitcoin
Benefits
Significant equity stock options
Medical, Dental and Vision Benefits
Unlimited PTO
Parental Leave separate from regular PTO policy
401k
Company
River
River is a client-first Bitcoin company that focuses on security, innovative Bitcoin products, and exceptional service.
51-200 employees
H1B Sponsorship
River has a track record of offering H1B sponsorships. Please note that this does not
guarantee sponsorship for this specific role. Below presents additional info for your
reference. (Data Powered by US Department of Labor)
Distribution of Different Job Fields Receiving Sponsorship
Represents job field similar to this job
Trends of Total Sponsorships
2025 (1)
2023 (1)
Funding
Current Stage
Growth StageTotal Funding
$52.7MKey Investors
Kingsway CapitalGoldcrest CapitalPolychain
2023-05-16Series B· $35M
2021-03-11Series A· $12M
2020-06-17Seed· $5.7M
Leadership Team
Alexander Leishman
Founder & CEO
Recent News
2026-01-06
Hindu Business Line
2026-01-03
2025-11-12
Company data provided by crunchbase