Senior Developer Relations Engineer (US)

Crossmint is the leading enterprise-grade, all-in-one stablecoin and wallet infrastructure platform enabling fintechs and enterprises to integrate stablecoin rails and smart wallets with speed, compliance, and scale.

Backed by Ribbit Capital, Franklin Templeton, NYCA, First Round, and Lightspeed Faction, with $23.6M raised in 2025. Trusted by more than 40,000 clients including global leaders such as MoneyGram, WireX, Toku, and more, Crossmint provides embedded smart wallets, on/offramps, cross-chain stablecoin orchestration, tokenization, and other blockchain primitives through simple, developer-friendly APIs that integrate in minutes and scale to millions of users.

In January 2026, Crossmint secured MiCA authorization from Spain's CNMV, becoming one of a select few stablecoin infrastructure providers fully licensed to operate across all 27 EU member states and held to the same regulatory standards as traditional financial institutions. Crossmint also powers the Republic of the Marshall Islands' first digital UBI program, backs MoneyGram's new stablecoin cross-border experience launching in LATAM, and recently partnered with WireX to expand multichain stablecoin payment infrastructure to non-EVM networks like Stellar.

The future of finance is stablecoin-native. Crossmint makes it easy to get there.

Flexible within the US. Miami, San Francisco or New York preferred.

Full-time

$140,000 - $175,000

Note: Final level and compensation are determined during the interview process based on experience and fit.

4+ years of experience in developer relations, solutions engineering, or a similar role with a heavy emphasis on building.

We are looking for a Senior DevRel Engineer who lives at the frontier of agentic systems and crypto infrastructure, someone who ships exploratory code before others have finished reading the docs.

This role is built around one core function: building. You will spend most of your time prototyping agentic applications on top of Crossmint's APIs, stress-testing new frameworks and protocols as they emerge, and turning sharp technical instincts into reference implementations that move the ecosystem forward. When a new agent framework ships or a new protocol launches, you are already running experiments.

You have a public track record (GitHub repos, threads, demos, or past projects) that shows you have been building in this space, not watching it from the sidelines. You do not wait to be pointed at something interesting. You find it, build on it, and share what you learned.

The external-facing work (content, community, workshops) matters, but it flows from the building. Your credibility comes from the code.

Prototyping and Exploratory Development

• Build proofs of concept, demos, and reference implementations at the intersection of agentic AI and crypto/stablecoin infrastructure.

• Proactively track and evaluate emerging agent frameworks, protocols, and developer tooling, and build on them before anyone asks you to.

• Stress-test Crossmint's APIs and SDKs from a developer's perspective, identifying friction points early and proposing concrete fixes.

• Maintain a library of starter kits, demo apps, and integration examples that reflect current best practices and the actual state of the ecosystem.

Technical Content and Education

• Translate exploratory work into tutorials, walkthroughs, blog posts, and videos that help developers understand what is possible.

• Lead workshops, hackathons, and live coding sessions focused on real, working implementations rather than slide decks.

• Improve documentation and onboarding flows based on what you learn building and from direct developer feedback.

Community and Ecosystem

• Engage actively in developer communities on Discord, GitHub, X, and forums, particularly where agentic AI and crypto intersect.

• Build relationships with builders, researchers, and early adopters working at this frontier.

• Surface patterns from community interactions and feed them back into product and engineering.

Product Collaboration

• Partner with product and engineering to communicate developer friction, feature gaps, and emerging use cases you are seeing in the field.

• Contribute to API design discussions with a developer-experience lens.

• Track adoption and engagement signals to help prioritize where to invest.

Experience

• 4+ years in developer relations, developer advocacy, solutions engineering, or a similarly hands-on technical role.

• Demonstrated experience building with agentic frameworks (LangChain, LangGraph, CrewAI, AutoGen, Vercel AI SDK, or similar) with public work to show for it.

• Background in crypto, Web3, or fintech infrastructure is a strong signal, especially if you have built at the intersection with AI agents.

• A public portfolio: GitHub repos, demo projects, published content, or a timeline of experiments that shows how you engage with new technology.

Technical Skills

• Strong hands-on experience with TypeScript, JavaScript, Python, or similar languages.

• Deep understanding of APIs, SDKs, authentication, webhooks, and how developers actually integrate third-party infrastructure.

• Comfortable shipping full-stack applications and working across the stack when a demo requires it.

• Experience working with wallets, stablecoins, smart contracts, or on-chain protocols is a meaningful plus.

How You Work

• High agency: you identify what needs to exist, build it, and ship it without waiting for a detailed brief.

• Proactively chase new frameworks and protocols. You are in the GitHub issues and Discord servers of tools that launched last week.

• Strong written and verbal communication. You can explain a complex system clearly to a developer who has never seen it.

• Collaborative with product and engineering teams, and comfortable representing the developer perspective in technical discussions.

You will be building at one of the most interesting intersections in technology right now: agentic AI and real financial infrastructure. Your work will directly shape how developers discover and adopt Crossmint, and your instincts about where the ecosystem is heading will inform product decisions.

If you are the kind of person who already has a repo or a thread that shows you have been thinking about this, we want to talk.

• Extensive access to leading AI tools and subscriptions, with AI actively encouraged and integrated into daily workflows.

• Stock options program.

• We conduct two performance reviews annually. The first addresses performance ratings, bonuses, and promotions. The second encompasses these elements along with salary adjustments reflecting inflation and market conditions.

• Unlimited, flexible PTO.

• Parental Leave Program.

• Flexible work schedule.

• Company laptop and allowance for any necessary home equipment.

• Daily stipend for commuting to the office.

• Company-paid trips for annual off-sites and onsites.

• Insurance covered by Crossmint.

• 401(k) Plan.

• Results and delivery: Ship high quality work fast.

• Build for the long term: Build scalable, secure, and reliable solutions. Use AI.

• Extreme Ownership: Be an effective Directly Responsible Individual (DRI). Be proactive.

• Be a team player: Be an effective and kind colleague providing credible challenge. Be present and reliable.

Talent research indicates that women are often less inclined than men to apply for a role unless they have experience in 100% of the listed skills. However, this list is only a guide. We welcome your application even if you feel you meet around 75% of the requirements. At Crossmint, we believe skills can be learned, and diversity makes us stronger.

We work to foster a respectful environment where each person can be their authentic self, free from harassment, racism, and any form of discrimination. We proudly uphold our commitment to diversity and inclusion as an equal opportunity employer, and this policy applies to all employment practices within our organization.

Please note that Crossmint never conducts AI-based interviews, and all of our processes include an initial video call with a team member. Crossmint will not request your personal identification documents or any payment at any point during your interview process. Please stay vigilant about potential fraud. If you receive an email that claims to be from Crossmint but ends with any domain other than @crossmint.com, @crossmint.io or @paella.dev, it is not from us. We own these three domains listed before, and they are the only legitimate ones.

Please let our Talent Team know if you need any assistance completing any forms, or participating in the process.

Who will be in contact with you

Our People Ops team will be joining you throughout the entirety of the interview and onboarding processes. Feel free to reach out if you need anything!

• Adolfo Fernández - Recruitment & People Ops

• Gloria Alogo - People Ops, Onboarding & Benefits

⚠️ Please note that these are the only members of our People Ops team. Please remain vigilant and watch out for impersonators.

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