Senior Software Engineer, Payments & Blockchain

About Stronghold

Stronghold creates virtual payment networks that enable developers to access legacy and next-generation payment networks, all through a simple API. Named a Forbes Fintech 50, Stronghold’s mission is to improve financial access by powering innovative payment and financial services solutions through our open APIs. We’ve been going deep to lay the underlying rails for modern payments and reach all customers with secure, transparent ways to move money.

About the Role

You will be an integral part of the engineering team architecting, developing and maintaining our payments API platform and own cryptocurrency. You will work closely with our product management and customer-facing teams to find solutions to challenging customer problems. You will have the autonomy to architect and design scalable, innovative solutions. You will develop and optimize across our platforms on a wide range of technologies and problem types. You will be surrounded with an experienced team that has both start-up and established company backgrounds.

What You'll Do

• Develop Stronghold's Platform APIs, working on solving payment problems for our enterprise customers and underserved businesses utilizing Go, Rust, JS, & .NET.
• Be involved with all aspects of the development process for Platform projects - from vision to final implementation.
• Design new Platform functionality with the corresponding APIs for external developers.
• Work on existing and greenfield projects in Stronghold’s blockchain-enabled ecosystem, combining elements from traditional and crypto-based payments.
• Interface the platform and new projects with native blockchain features as well as create smart contracts for custom on-chain capability.
• Receive, prioritize, and help solve technical problems from Stronghold's Platform API customer base.
• Collaborate with the Stronghold engineering team on code review and design, and contribute to best practices across all of the engineering team.

What We're Looking For

• You have 6+ years of experience developing software on a team.
• You're proficient in languages such as Go, .NET, Rust, Node.js, or Python.
• Experience with building frontend user interfaces, and/or have architected large, single page web applications using frameworks such as React.
• Experience building and maintaining APIs open to external developers
• You are knowledgeable of existing frameworks and open source tools and are willing to build new frameworks when open ones do not exist.
• You have a BSc or MSc in Computer Science or an equivalent experience.
• Google Cloud platform, AWS, Kubernetes, Docker, Google Cloud functions, Cloudflare, Terraform, Redis, Postgres, Git, Gitlab/Github
• Familiarity with blockchain/distributed ledger technology, such as Ethereum, Ripple, Stellar, or Solana
• You're enthusiastic about working on a small, growing team where you'll be given a lot of autonomy.
• You're a great communicator that can advocate and lead technical discussions, especially during the design and code review process.
• Excellent generalist programming ability.
• You learn quickly and strive for simplicity.
• You're open, empathetic, and care about putting the best ideas forward in a collaborative and helpful manner.
• You have experience working in financial institutions, especially in payments including Visa/MC, US ACH & wires, CA Interac, and cross-border wires.