Senior Software Engineer
Job Description
About Coinflow
Coinflow is the next-generation payment service provider revolutionizing global financial infrastructure with stablecoins, AI-driven fraud prevention, and instant settlement. Coinflow enables businesses to grow faster with instant settlement, fraud & chargeback indemnity, global pay-ins, multi-currency FX, and unified payouts. Founded in 2023, the company serves marketplaces, fintechs, remittance providers, gaming platforms, and ecommerce merchants worldwide.
Since our seed round in 2024, we’ve achieved 23x revenue growth and scaled to multi-billion-dollar annual transaction volume. In response to this growth, Coinflow announced a $25M Series A in October 2025—led by Pantera Capital, CMT Digital, Coinbase Ventures, Jump Crypto, and Reciprocal Ventures—accelerating our mission to power the world’s fastest-moving businesses with innovative, reliable global payments.
Coinflow is proudly headquartered in Chicago, IL. Learn more at coinflow.cash.
About The Role
We're looking for a Senior Software Engineer to help build the core infrastructure powering global payments. You'll design and implement systems that process billions of dollars in transactions, working across our payment orchestration layer, merchant APIs, and real-time settlement engine.
This is a high-impact role where your code ships to production quickly and handles real money from day one. You'll collaborate closely with Product to shape what we build, with fellow engineers on how we build it, and have significant ownership over the systems you create.
What You'll Do
Build Core Payment Infrastructure
- •Design and implement payment processing systems that handle high throughput and strict reliability requirements
- •Build APIs and SDKs that merchants use to integrate Coinflow into their platforms
- •Develop fraud detection and risk management features using real-time data analysis
Scale Our Platform
- •Architect systems for performance, reliability, and observability at scale
- •Optimize database queries, caching strategies, and service communication patterns
- •Instrument services for monitoring, alerting, and debugging production issues
Ship Product Features
- •Work end-to-end on features from technical design through deployment and iteration
- •Collaborate with Product and Design to translate requirements into elegant technical solutions
- •Balance speed of delivery with code quality and long-term maintainability
Improve How We Work
- •Contribute to technical decisions around architecture, tooling, and best practices
- •Mentor other engineers through code review, pairing, and knowledge sharing
- •Help shape engineering culture as the team grows
What We're Looking For
- •5+ years of professional software engineering experience
- •Strong proficiency in TypeScript and Node.js; experience with React is a plus
- •Deep understanding of REST API design, relational and document databases (especially MongoDB), and distributed systems concepts
- •Experience building systems that handle high transaction volumes or strict correctness requirements
- •Comfortable with cloud infrastructure (AWS, GCP, or similar) and containerized deployments
- •Track record of shipping and maintaining production systems
- •Clear communicator who can discuss technical tradeoffs with engineers and non-engineers alike
- •Bonus: Experience in payments, fintech, or blockchain/crypto
The base salary range for this role is $140,000 to $190,000 USD. The actual base salary offered depends on a variety of factors, including but not limited to experience, education, skills, qualifications and business needs.
In addition, the employee who fills this role will be eligible for an equity grant, allowing you to share in the long-term success of the company. You will also have access to a wide array of benefits, including health and wellness benefits, 401(k) savings plan, and flexible time off.
Join the team rewriting how money moves worldwide—and become a driving force in the $194 trillion cross-border payments market.
About Coinflow
Coinflow is a pioneering blockchain infrastructure company based in Lithuania, empowering the future of digital finance. We're building robust, scalable, and secure Web3 solutions that bridge the gap between traditional financial systems and the innovative world of cryptocurrencies. Our focus is on developing advanced payment rails, liquidity solutions, and infrastructure tools that simplify crypto transactions and foster widespread adoption for businesses and individuals globally. We believe in a decentralized future where value flows freely and efficiently, and we're committed to making that vision a reality through cutting-edge technology and relentless innovation. Our culture at Coinflow is a vibrant blend of expertise, collaboration, and a shared passion for Web3. We champion a flat hierarchy, encourage open communication, and empower our team members to take ownership and experiment. We're a diverse group of crypto enthusiasts, engineers, product strategists, and financial experts united by a common goal: to revolutionize how the world transacts. Continuous learning, problem-solving, and a commitment to excellence are at the core of our daily operations, creating an environment where talent thrives. Joining Coinflow means becoming an integral part of a fast-paced, high-impact blockchain journey. You'll work on challenging projects that directly shape the future of finance, collaborate with some of the brightest minds in the Web3 space, and contribute to products used by a global audience. We offer competitive compensation, opportunities for professional growth, and the chance to make a tangible difference in the evolving crypto landscape. If you're a self-starter with a passion for blockchain technology and a desire to build something truly impactful, we invite you to explore career opportunities with Coinflow and help us build the next generation of digital finance infrastructure.
Ready to Apply?
To submit your application for this position, please visit Coinflow's official website and follow their application process.