About Us Trustyfy is a integral tech company building the first De Fi bank for companies and individuals. About Us Trustyfy is a global tech company building the first De Fi bank for companies and individuals. For the first time in history since the invention of banking, customers – not banks – can have full ownership of their money. Thanks to our proprietary multi-signature and decentralized technology, companies can work internationally with no risk of payment delays, and at a fraction of the cost of legacy banks. Workers can remit funds to their loved ones at almost no cost. And two billion unbanked can become financially independent. We are not just building the future of finance. We can make a real difference. We have validated the vision and secured the capital from both recurring revenues and a seed round. Now, we are leveling up our leadership. Why Your Role Matters As our Web3 Infrastructure & Security Engineer, you’ll build and protect the systems that power our wallets, nodes, key management, and backend services. Your work will directly impact uptime, resilience, incident response, and the safety of customer assets. This is a high-trust role with real ownership. Key Responsibilities Build and maintain secure infrastructure for Web3 services (nodes, RPCs, indexers, signing systems, APIs) Design secure deployment pipelines and environments (CI/CD, secrets, access controls, hardening) Implement and manage secure key infrastructure (HSM/KMS, MPC or custodial integrations, rotation policies) Monitor infrastructure and security posture (logging, alerting, SIEM-like workflows, anomaly detection)



Conduct threat modeling and security reviews for Web3 architecture, smart contract interactions, and integrations Define security baselines and automate enforcement (Ia C guardrails, compliance controls, policy-as-code) Support incident response: detection, containment, post-mortems, improvements Work closely with backend, product, and risk/compliance teams to ship securely at speed Skills & Experience Strong experience in infrastructure engineering (cloud, Linux, networking, containers, automation) Hands-on security experience: hardening, IAM, secrets management, vulnerability management, logging/monitoring Web3 knowledge: nodes, RPC providers, signing flows, wallet infrastructure, transaction lifecycle Strong understanding of key security concepts (KMS/HSM, MPC, encryption, secure storage, attack vectors) Experience with one or more: AWS / GCP / Azure, Kubernetes, Terraform, Docker, Git Hub Actions/Git Lab CI Comfortable working in a high-ownership environment with fast iteration Strong English communication skills. Spanish a plus Bonus Points Experience with custody providers (Fireblocks, Anchorage, Copper, Bit Go, etc.) Experience operating blockchain nodes (Ethereum, L2s, Solana, Bitcoin, etc.) Familiarity with security standards & frameworks (SOC2, ISO27001, NIST) Smart contract security familiarity (auditing basics, common vulnerabilities, monitoring on-chain risk) Experience with DORA / operational resilience approaches in regulated environments Extra Benefits Support for relocation, visa, housing, and health insurance if required. #J-18808-Ljbffr

📌 Web3 Infrastructure & Security Engineer (Murcia)
🏢 Trustyfy
📍 Murcia