Web3 Python Jobs in Spain, Europe

About us:

BVNK is the stablecoin-powered financial stack for enterprises. We're now part of Mastercard, and together we're building a network for every form of money – one that delivers more reach, more capability and more choice.

We enable businesses to build financial products, unlock new markets, and move money in seconds across 130+ countries, with 40+ licenses for fiat and digital assets globally. Processing billions annually, we empower enterprises worldwide to send, receive, convert, and settle stablecoins and fiat seamlessly through a single integration.

Our mission is to accelerate global money movement, and we're assembling a world-class team to make it happen.

Trusted by industry leaders like Corpay, Worldpay, Deel, and Flywire, we deliver the infrastructure that makes new forms of money usable within the financial systems customers already rely on today.

By combining Mastercard's global payment reach and trusted networks with BVNK's stablecoin infrastructure, we're building the trusted operating layer for the evolution of money movement, helping customers participate in emerging digital networks without having to rebuild their businesses around every new innovation.

We're a diverse team spread across EMEA, North America, and APAC, with a shared belief that stablecoins are the new infrastructure layer for financial services, and that BVNK is at the forefront of this shift.

We're incredibly honored to have been recognized by:

• CNBC World's Top Fintech Companies (2026)
• FXC Intelligence Top 100 Cross-border Payment Companies (2026)
• Newsweek's The Top 100 Global Most Loved Workplaces (three years running, most recently 2025)
• LinkedIn as one of the Top 20 Startups in the UK (2025)

About this role in the team:

We are looking for a QA Engineer who views AI as their primary leverage. At BVNK, we aren't just looking for someone to maintain scripts; we want an engineer who views manual, repetitive testing as a problem to be solved with intelligent agents.

You will join a team of Quality Assurance experts responsible for the end-to-end integrity of our Fiat and Crypto products. Your mission is to evolve our testing from "automated" to "autonomous." You will build intelligent testing systems that predict failures, self-heal scripts, and utilize LLMs to bridge the gap between complex financial requirements and bulletproof code.

Key Areas of Responsibilities:

• AI-First Framework Evolution: Architect and maintain automation frameworks that prioritize AI-powered solutions for test generation, execution, and self-healing.
• Autonomous Quality Gates: Implement AI-driven gates in our CI/CD pipeline to predict regression risks before code is even merged.
• Synthetic Data Strategy: Leverage Generative AI to create complex, high-integrity test data sets for diverse global payment scenarios.
• Intelligent Observability: Use AI to analyze logs and system behavior, providing insights that traditional testing tools miss.
• Mentorship & AI Evangelism: Act as the subject matter expert on emerging AI tools (Claude Code, LangChain) to upskill the broader QA team.

What we need from you:

• AI-Native Mindset: You are an early adopter of LLMs and agentic workflows. You don't just use AI to write snippets; you use it to architect solutions.
• Technical Core: Expert-level proficiency in Python (our primary language) and the ability to navigate Java environments.
• Modern Tooling: Hands-on experience with PyTest, Playwright, and K6.
• Engineering for AI: Demonstrated experience implementing AI solutions for test case generation and automated bug triaging.
• Infrastructure Fluency: Familiarity with CI/CD concepts and desire to understand the integration of AI-driven testing into the deployment lifecycle.
• Precision & Speed: Exceptional attention to detail with the ability to move fast in a rapidly evolving FinTech environment.
• Bonus: LLM Integration: Experience building custom GPTs or using LangChain/LangSmith/LangGraf to evaluate LLM-based product features.
• Bonus: FinTech & Crypto: Previous experience in payments, stablecoins, or blockchain technology.
• Bonus: Agentic Testing: Experience experimenting with autonomous agents for exploratory testing.

What you can expect from us:

• Fair and competitive salary at every stage of your growth
• Flexible working hours, with hybrid working at its heart
• A culture built on passionate growth-minded people
• A flexible approach to holiday
• Opportunities to travel to our offices around the world
• An open and creative environment where you can help us define the future of BVNK, its culture, and its opportunity sets

At BVNK, we are focused on building a diverse and inclusive team. While you may not meet all of our requirements, we’d encourage you to apply if you meet the majority of our expectations. You may be a great fit for this role or another role in our team. 

Compensation packages are based on candidate experience and relevant certifications.

Bulgaria Salary Range€40.000—€70.000 EUR

Compensation packages are based on candidate experience and relevant certifications.

Spain Salary Range€50.000—€80.000 EUR

Compensation packages are based on candidate experience and relevant certifications.

Poland Salary Range250 000 zł—320 000 zł PLN