Design and build backend services in Golang that integrate with payment processors, gateways, and card networks.
Own critical money-movement flows end to end: authorization, capture, settlement, refunds, reconciliation, and chargeback/dispute handling.
Build idempotent, fault-tolerant, auditable transaction processing within a distributed architecture using patterns like transactional outboxes and queues.
Sezzle financially empowers the next generation with interest-free installment plans and cutting-edge fintech. The company is building an innovative, dynamic team passionate about transforming payments and retail.
Design and develop software in an event-driven microservices environment.
Build microservices in Golang and work with platform engineers.
Respond to production issues and communicate with client technical teams.
zerohash is a leading crypto infrastructure platform that powers digital money for banks and fintechs. Founded in 2017, it has raised over $280M and prioritizes independence, collaboration, and transparency.
Design, build, and implement capabilities that enhance security, trust, and resilience of cloud-native payments platform.
Apply expertise in API security, cryptographic controls, AI governance, and software supply chain security.
Collaborate with engineers and security experts to deliver scalable, maintainable solutions embedded into the software development lifecycle.
Form3 is revolutionizing the world of payments with cutting-edge technology and innovative solutions. They are a collaborative and inclusive company that values diversity and open-mindedness, hiring talented people from a variety of backgrounds.
Design and build highly scalable platform services to improve reliability and performance of the Chainlink Runtime Environment (CRE).
Lead development of production-grade backend services and APIs supporting multiple internal stakeholders and platform consumers.
Drive architectural improvements enabling vertical and horizontal platform scaling while improving workflow execution durability and resilience.
Chainlink is the industry-standard oracle platform bringing capital markets onchain and powering decentralized finance (DeFi). Chainlink Labs, the core developer, is a large global organization with a remote-first culture, tens of billions in transaction value, and partnerships with major financial institutions.
Design and maintain high-performance backend services in Golang on GCP and AWS for fraud detection and compliance products.
Build APIs for banking/payment systems and collaborate with cross-functional teams on product development.
Own the full product lifecycle including testing with Cypress, Junit, or Mockito and maintain user-facing documentation.
Sardine provides fraud prevention and AML compliance solutions using device intelligence, behavior biometrics, machine learning, and AI. The company has raised $145M from top investors and serves over 300 banks, retailers, and fintechs globally, maintaining a remote-first culture with hubs in North America and Brazil.
Design and scale backend services powering Flex's core financial infrastructure, including payments, billing, and ledger systems.
Lead architecture of highly available, fault-tolerant financial platforms processing millions in transactions.
Partner with Product, Finance, Risk, Compliance, and Engineering teams to deliver scalable payment experiences.
Flex is a growth-stage FinTech company that creates the best rent payment experience, enabling users to pay rent on a flexible schedule. With unprecedented investor support and an enthusiastic user base, Flex fosters an inclusive culture with a diverse team across the US, Australia, Canada, and South America.
Define and maintain the technical direction for backend APIs and checkout experiences, ensuring high performance and security.
Act as a mentor for the engineering team, lead code reviews, and conduct performance reviews to uphold high standards.
Oversee integration of third-party payment providers and ensure compliance with data security standards.
Vivenu is a global leader in event ticketing technology, transforming ticketing for major events like the Grammys and Golden Globes. Backed by over $65 million in funding, the company operates six offices worldwide with over 160 professionals, fostering a diverse, merit-driven culture.
Build and maintain high-performance APIs and microservices in Go for payment processing, fraud detection, and authentication.
Take end-to-end ownership of features and integrations from design to production rollout and monitoring.
Work cross-functionally with Product, Compliance, and Business teams to deliver elegant technical solutions.
Yuno is a payment orchestrator that connects businesses to 300+ payment methods worldwide through a single integration. Founded by the team behind Rappi, Yuno is growing fast as a remote-first company with a culture of ownership and collaboration.
Design and build highly scalable systems supporting millions of transactions across multiple countries and regulatory environments.
Develop cross-border transaction infrastructure, tax compliance, and international post-purchase experiences.
Partner with internal logistics, payments, and platform teams to build durable long-term infrastructure.
Whatnot is the largest livestream shopping platform in North America and Europe, enabling sellers to build real businesses across hundreds of categories. We're a remote co-located team of over 1,000 employees, one of the fastest growing marketplaces, and recently named #1 Best Startup Employer in America by Forbes.
Build reliable backend services in Go across the backup and restore pipeline.
Implement SaaS connectors integrating with M365, Google Workspace, and Salesforce APIs.
Write thorough unit and integration tests and participate in code reviews and design discussions.
Kaseya is a leading provider of AI-powered IT management and cybersecurity software, serving MSPs and internal IT organizations worldwide. The company has over 15 million endpoints managed, operates in 20+ countries, and cultivates a high-growth, results-driven culture focused on innovation and accountability.
Design, code, test, and debug software applications with attention to performance, scalability, and security.
Collaborate with cross-functional teams to translate business requirements into technical specifications and architectural designs.
Participate in code reviews, troubleshoot issues, and maintain comprehensive technical documentation.
EasyPost is a YC unicorn that makes shipping simple for businesses through a developer-friendly REST API. The company is rapidly growing, with a culture of builders and problem-solvers who value elegant architecture and fast decisions.
Build and operate large-scale cloud infrastructure for product metrics and real-time analytics.
Design, develop, and improve fault-tolerant distributed systems processing trillions of events.
Collaborate cross-functionally, perform code reviews, and participate in on-call rotation.
Jobgether uses AI-powered matching to connect candidates with hiring companies. They process applications quickly and share shortlists directly with employers, operating as a job platform seeking to streamline recruitment.
Build Go backend services that broker wallet creation, authentication, and signing at scale.
Own key recovery and the committee trust model using distributed key generation and secret sharing.
Operate production services on Kubernetes with observability, alerting, and compliance controls.
Offchain is a blockchain scalability and security company that built the Arbitrum stack, powering the most widely adopted Ethereum scaling solution. Backed by $124 million in funding, the team is a small, high-ownership group of thinkers and doers tackling real-world challenges in decentralized systems.
Architect and own end-to-end full-stack surfaces of the marketplace loop, delivering high-performance tools and developer-facing onboarding systems.
Design agent-native user experiences with robust MCP server capabilities, sandboxed test environments, and elegant CLI/SDK generation workflows.
Scale and protect transaction infrastructure by building high-reliability pipelines for identity verification, usage attribution, and multi-party settlement.
Kong Inc. is a leading developer of API and AI connectivity technologies, building the infrastructure that powers the agentic era. Trusted by Fortune 500 and startups alike, Kong's unified platform enables organizations to secure, manage, and monetize intelligence across APIs and AI models.
Build reliable backend services in Go across the backup and restore pipeline.
Implement SaaS connectors integrating with M365, Google Workspace, and Salesforce APIs.
Write thorough unit and integration tests; treat correctness as a first-class requirement.
Kaseya is the leading provider of AI-powered IT management and cybersecurity software, serving Managed Service Providers (MSPs) and internal IT organizations worldwide. Backed by Insight Partners, Kaseya has experienced sustained double-digit growth, supports customers in over 20 countries, and manages more than 15 million endpoints globally.
Build and scale mission-critical order and execution management infrastructure in Rust.
Design systems balancing low-latency execution, fault tolerance, and correctness across distributed trading workflows.
Translate evolving regulatory and market structure requirements into reliable, testable platform capabilities.
Clear Street is a diversified financial services firm modernizing the brokerage ecosystem with a cloud-native clearing and custody system. Founded in 2018, the company is a small, growing team with a meritocratic culture that champions collaboration.
United States
Unlimited PTO
20w maternity
20w paternity
Lead the design and architecture of large-scale, complex systems for banking and money movement.
Take ownership of major technical initiatives, driving alignment with customer needs and business goals.
Mentor and guide other engineers, fostering technical growth and excellence across the team.
Marqeta is a card issuing platform enabling embedded finance for companies like Block, Cash App, and Uber. They are a publicly traded company with a culture of flexibility and innovation.
Design and deliver large-scale, real-time systems with high quality, scalability, and operability.
Collaborate with product management, data engineering, and teams to bring end-to-end solutions to customers.
Take operational ownership using monitoring and observability tools to identify and respond to issues.
Signifyd helps merchants grow their businesses by building trusted relationships and providing fraud-free commerce solutions. We securely process billions of transactions annually and foster a culture of commitment, empathy, and creativity.
Architect and implement scalable, performant, and secure software solutions for backend distributed platforms.
Provide technical leadership, write clean code, and conduct code reviews to ensure best practices.
Collaborate cross-functionally with product managers, designers, and engineers to translate business requirements into technical specifications.
Dave is a financial app that builds products to level the financial playing field for Americans who are financially vulnerable or living paycheck to paycheck. As a public fintech company, it offers a digital financial platform with products like ExtraCash and is focused on creating accessible credit options.
Build and enhance scalable Golang microservices for eligibility, coverage, billing, and client-facing systems.
Automate operational workflows to reduce manual data handling and improve data accuracy.
Design self-service tools for finance, operations, and client teams to manage processes independently.
Virta Health aims to reverse metabolic disease in one billion people using technology, personalized nutrition, and virtual care. It is a well-funded startup with over $350 million raised from top-tier investors, partnering with health plans, employers, and government organizations.