QA Engineer - APIs & SDKs (Contract - US, LATAM, Spain)

About Crossmint

Stablecoins and blockchains are upgrading the world’s financial system — and Crossmint lets companies harness their power with ease.

Crossmint is a one-stop-shop developer platform for building modern financial applications, from the next generation of fintechs to applications that leverage AI agent–driven commerce.

With just a few lines of code, developers can integrate programmable wallets, stablecoin payments, tokenization, on / off ramps, compliance, and agentic commerce tools — all from a single vendor, without the need for a large team of blockchain engineers.

From companies like MoneyGram and Visa to entire nation states, our more than 40,000 clients use Crossmint to launch new financial products, tokenize assets, and build applications for agentic commerce — all on fully managed infrastructure across 50+ chains.

If you want to help build the backbone of programmable finance and agentic systems, we’d love to work with you!

Location

US, Latin America, or Spain. Candidates must confirm they are able to work in alignment with ET / EST business hours.

Type of employment

• Contractor role (20-40 hours per week).
• Initial 3-month engagement, renewable.
• Potential to convert into full-time employment.

Compensation

Per-hour setting for the contract duration.

About The Role

We’re looking for a Technical QA Engineer to join our team building APIs and SDKs for crypto infrastructure. You’ll operate at the intersection of quality assurance and technical support engineering , ensuring our APIs and SDKs are robust, reliable, and intuitive for developers.

Quality Assurance

Technical Support Engineering

Technical Development

About you

Technical Expertise

Quality Assurance Background

Problem-Solving Mindset

Nice to Have

Our Principles

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.

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