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Senior Software Engineer, Platform



Software Engineering
Posted on Tuesday, May 7, 2024
About the Company
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.
We are seeking team players who can evolve with the company as we scale and add new products. We are a team of technologists and industry experts who take a data-driven and innovative approach to solving problems. We power possibilities for our customers by bringing the best talent together in an open and collaborative work environment that rewards curiosity and grit.
Stronghold is proud of its SF Bay Area and New Zealand roots and strives to build a diverse team to serve our ecosystem better while staying true to our core values. Our core values are to Be Self Aware, Have Good Judgment, Be Curious, Seek Innovation, Excellent Communication, High Impact, Be Bold, Be Selfless, Be Accountable, Be Honest, and Show Grit.
About the Role
You will be an integral part of the engineering team architecting, developing and maintaining our payments API platform and our blockchain projects. 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.
You’ll drive growth and innovation in our decentralized finance and payments products through the development of our software products. You will be responsible for back-end development, scale and optimization. This position offers an opportunity to work on diverse projects, from designing systems to launching new features to reducing tech debt to designing user interfaces to optimizing server-side performance.

What You'll Do

  • Maintain Stronghold's Platform APIs, working on solving payment problems for our enterprise customers and underserved businesses utilizing .Net, Go, Rust, Node.js and frontend JS frameworks.
  • Be involved with all aspects of the development process for Platform projects - from vision to final implementation.
  • Support new Platform functionality with the corresponding APIs for external developers.
  • 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.
  • Work across customer segments, problem types and time horizons on a wide-variety of initiatives.

What We're Looking for

  • You have 6+ years of experience developing software on a team.
  • You're proficient in languages such as .NET and Go.
  • Nice to have knowledge of Node.js, Rust, Java, Golang or Python.
  • Experience with building frontend user interfaces, and/or have architected large, single page web applications using frameworks such as React, Angular, Vue, or Svelte.
  • Familiarity with building and maintaining APIs open to external developers.
  • You are knowledgeable of existing frameworks and open source tools..You have a BSc or MSc in Computer Science or an equivalent experience.
  • Experience with Google Cloud platform, AWS, Kubernetes, Docker, Google Cloud functions, Cloudflare, Terraform, Redis, Postgres, Git, Gitlab/Github.
  • 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.
  • 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.


  • Ability to work remotely within the US
  • Authorized to work in the United States (required)
As an equal opportunity employer, Stronghold does not discriminate against any applicant or employee based on race, color, sex, sexual orientation, gender identity, marital status, religion, national origin, ancestry, age, disability, military or veteran status, genetic information or any other basis protected by applicable federal, state, or local laws.
**Visa sponsorship is not available at this time. Only applicants who do not require sponsorship will be considered.