Principal Solutions Engineer

About

Dfns is the leading Wallets-as-a-Service (WaaS) platform, helping fintechs, institutions, and enterprises simplify digital asset management and securely onboard users onchain. Its API-first wallet platform unifies transaction management, workflow governance, key deployment, and third-party integrations into one secure operating system for blockchains. Built on advanced security and cryptography, Dfns is trusted by over 200 financial institutions and applications—including ABN AMRO, Broadridge, Fidelity, Zodia Custody, Stripe, Moonpay, Circle, IBM, Deblock, and Gemini—and secures over $3 billion in monthly transactions.

Founded in 2020, Dfns has raised $30 million from global investors such as White Star Capital, Motive Partners, Bpifrance, Coinbase, Wintermute, and Susquehanna. Originally incubated by Techstars and Station F in Paris, Dfns now operates globally with teams across the US, Europe, the Middle East, and Asia.

Join a stellar team of leaders and experts in blockchain technology, cryptography, infrastructure, and security to build the backbone of blockchain wallet infrastructure for the next financial era. We’re hiring a Principal Solutions Engineer to help institutions, fintechs, and enterprises across the Americas adopt Dfns with confidence and ease. This role is hands-on and client-facing: you’ll design integrations for complex environments, guide customers through deployment, and provide end-to-end technical support.

You’ll pair technical expertise with strong communication skills, serving as an advisor to CTOs, architects, and engineering teams. Expect to design tailored solutions, deliver technical proposals, troubleshoot issues in real time, and collaborate closely with our backend, security, and product teams to ensure successful outcomes.

• Guide financial institutions and fintechs through seamless onboarding and integration.
• Build secure, scalable deployment pathways that bridge legacy and modern systems.
• Provide hands-on support: troubleshoot, fix, and build solutions alongside client teams.
• Collaborate with sales on technical proposals, demos, and RFP responses.
• Maintain and improve technical documentation and developer guides.
• Gather client feedback and translate insights into product and API improvements.
• Represent Dfns at conferences, workshops, and customer meetings.

• 10+ years in solutions engineering, forward-deployed engineering, enterprise integration.
• Track record of helping institutions or enterprises deploy mission-critical systems.
• Strong in Type Script (or similar languages) with proven API experience (REST).
• Deep knowledge of cloud platforms (AWS essential; GCP/Azure/Thales a plus), microservices, and serverless architectures.
• Skilled in troubleshooting complex issues and delivering under pressure.
• Solid understanding of enterprise security frameworks (ISO 27001, SOC 2, PCI DSS).
• Excellent communicator, able to bridge technical and business conversations.
• Strong documentation, presentation, and demo skills.
• Knowledge of blockchain, custody, and financial workflows strongly preferred.
• Certifications (e.g., AWS Solutions Architect) a plus;
  Spanish/Portuguese fluency valued.

Process

• Intro call with Co-CEO (30 min).
• Personality and cognitive tests (45 min)
• Coding test in a language of your choice.
• Focus interviews with the hiring panel (180 min).
• Code review
• Architecture review
• Security fundamentals
• Culture check fit
• Final interview with CTO (30 min).
• Reference calls and background checks.

• Title:
  
  Principal Solutions Engineer
• Salary: $,000 per year (full-time).
• Equity: 100-200 stock options vested over 4 years.
• Benefits:
  Healthcare and travel expenses.
• Location:
  
  United States (remote-first, office optional).
• Equipment:
  Mac Book Pro + essentials.

• Contract Type:
  Full-Time
• Location:
  
  New York
• Experience:
  
  > 10 years
• Possible full remote
• Salary: between 160000$ and 220000$ / year