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Overview
Job details
Full-time hours
Per the ad.
Fully remote
Per the ad.
Requirements
Have the right to work in Spain
Trust Wallet doesn't mention sponsorship, but this role may fit the Digital nomad visa.
Work in English
English is required, per the ad.
Have senior-level experience
Lead-level role.
Pay & benefits
What you'll get
Be a part of the world's leading blockchain ecosystem that continues to grow.
Excellent learning and career development opportunities.
Work alongside diverse, world-class talent, in an environment where learning and growth opportunities are endless.
Tackle fast-paced, challenging and unique projects.
Work in a truly global organization, with international teams and a flat organizational structure.
Work fully remotely with flexible working hours.
Enjoy competitive salary and benefits.
Visa & relocation
This is a global and fully remote role. You must have the right to work for the country you are based.
Requirements
What we're looking for
Production LLM/Agent experience at scale. You've built LLM or Agent features used by 10,000+ active users, and you've maintained and improved them after launch.
Strong backend engineering fundamentals. You're comfortable owning production code, APIs, data flows, and incident troubleshooting. Experience designing and implement backend services in Golang and integrate with LLMs and AI systems.
Real evaluation discipline. You've built evaluation sets, regression suites, and production monitoring, and you can explain how you confirmed an improvement was real rather than random fluctuation.
Ownership mindset. You make decisions, surface risks early, and don't consider a feature done until it's verified in production.
Web3 experience. Preferably 1 year of experience in a crypto, DeFi, or Web3 company (wallet, exchange, L1/L2 protocol, or DeFi platform strongly preferred)
The role
We're looking for a Lead AI Engineer to own the backend and Agent systems behind our LLM-powered products. The role is end to end: you'll build the Agent workflows, define how we measure quality, keep them reliable in production, and shape where the product goes next.
This role is for someone who has shipped LLM features to real users, stayed with them after launch, and can prove with data that their changes made things better.
What you'll do
Design, build, and maintain multi-turn conversation systems, including context management, tool calling, knowledge retrieval (RAG), state management, and human handoff.
Define success criteria with Product, Design, and QA leads.
Turn production failures into evaluation samples and regression tests.
Measure the impact and side effects of every change before and after release.
Isolate the root cause of failures: model judgment, knowledge gaps, abnormal tool responses, backend instability, or conflicting rules.
Apply the right fix for each cause rather than defaulting to prompt tweaks.
Handle timeouts, retries, graceful degradation, async jobs, and third-party dependency failures.
Make sure every issue is traceable through logs, every change is versioned, and every failure has a recovery path.
Give clear, reasoned positions on requirements, covering feasibility, cost, risk, and alternatives.
Propose better approaches and break work into phased, shippable deliverables.
Share progress, blockers, ETAs, and next checkpoints without needing to be chased.
After launch, track real-world impact and leave clear documentation and handover materials.
Hiring process
Meet the acquisition team
With talent acquisition team · Video call
A first conversation about your experience and motivation, with room for your questions.
Meeting the manager
With hiring manager and team · Video call
Behavioural and technical competencies are assessed; you also get to know the team and culture.
Function focused test
Online test · Not every role
A test of technical ability and industry knowledge, assigned depending on the role.
Final round
With senior management team · Video call
Meeting with the senior management team to confirm mutual fit.
- All interviews and assessments are conducted virtually.
- The company aims to go from application to offer in 2-4 weeks.
About Trust Wallet
Trust Wallet is a leading provider of self-custody cryptocurrency wallets, offering a secure and user-friendly platform for managing digital assets. The company is a major player in the blockchain and Web3 space, with a global user base and a strong reputation for security and innovation. Trust Wallet's mission is to make crypto accessible to everyone, and it has grown significantly since its inception, becoming a key part of the broader crypto ecosystem.
In Spain, Trust Wallet is building a significant engineering hub, with a focus on backend and mobile development. The company is actively hiring international talent for its Spanish offices, offering a dynamic and fast-paced work environment. For international professionals, Trust Wallet provides an opportunity to work on a globally recognized product within a collaborative and remote-friendly culture, making it an attractive option for those looking to relocate to Spain.
- Founded
- 2018
- Employees
- 100–500
- Headquarters
- San Francisco, USA
- In Spain
- Madrid
Good to know if you are moving
- Trust Wallet is a remote-first company, allowing flexibility in location within Spain.
- The company is a subsidiary of Binance, the world's largest cryptocurrency exchange, offering stability and global reach.
- Engineering roles in Spain focus on Go and React Native, with a strong emphasis on security and blockchain technology.
- The company offers competitive compensation and benefits packages to attract international talent.
- The work culture is fast-paced and innovative, with a focus on product ownership and impact.
In their own words
About the company & team
Trust Wallet is the leading non-custodial cryptocurrency wallet, trusted by over 200 million people worldwide to securely manage and grow their digital assets. Our vision is to give individuals the freedom to own their assets, confidently participate in the future economy, and access opportunities that enhance their lives. Our mission is to be a trusted personal companion - helping users safely navigate Web3, the on-chain economy, and the emerging AI-powered future. With support for over 10 million assets across 100+ blockchains, Trust Wallet offers a seamless, multi-chain experience backed by industry-leading self-custody technology, a vibrant community, and a growing ecosystem of partners.
Additional information
Apply today to join our team in building the world's most trusted and secure crypto wallet and enable a decentralized future for everyone.
Trust Wallet is committed to being an equal opportunity employer. We believe that having a diverse workforce is fundamental to our success.
*Due to the large amount of the applications, please consider your application as unsuccessful should you not be contacted within 4 weeks from your application date.
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