Location: Spain (on-site) Sector: Fintech / Electronic Money / Payments About the Role We are looking for a hands-on Tech Lead / Engineering Lead to join a new fintech venture launching in Spain, backed by the solid financial and operational foundation of a major international group. This is a key opportunity to shape the technology platform from the ground up, owning technical delivery, architectural integrity and engineering quality as the product evolves from MVP to a scalable, high-load platform. The role combines technical leadership, architecture and hands-on software engineering, working closely with Product, Architecture and both internal and external development teams. Key Responsibilities Technical Leadership & Delivery: Lead internal developers and external contractors, setting priorities, managing dependencies, timelines and quality, and ensuring predictable delivery. Architecture & Engineering Quality: Ensure adherence to architectural decisions, conduct technical reviews, manage technical debt and establish engineering standards across code, testing, security and deployment. Hands-on Development: Remain technically involved through complex code reviews, prototypes and production development when required to unblock the team or reduce technical risk. External Team Management: Oversee external development partners, ensuring transparency, knowledge transfer, code ownership and minimization of vendor dependency. SDLC & Operations: Establish and improve CI/CD, Definition of Done, release management, observability and incident/root-cause processes. Scalability & Resilience: Design and oversee distributed systems capable of supporting high loads, with a strong focus on fault tolerance, security, observability and disaster recovery. Team Building: Participate in hiring and progressively build the internal engineering team as the platform and business scale. Requirements Level:



Senior Software Engineer / Tech Lead / Development Lead with strong hands-on experience and proven ownership of architecture and delivery. Experience: 8+ years in software development, including at least 3 years in a technical leadership role. Go Expertise: Strong production experience with Go/Golang is mandatory. Candidates must be comfortable developing and reviewing production Go code, including concurrency, context management, resource control and testing. Architecture: Strong experience with distributed systems, microservices, fault tolerance and synchronous/asynchronous communication. Backend & APIs: Experience with g RPC/Protobuf, REST/Open API, API versioning, authentication, retries and idempotency. Cloud & Infrastructure: Production experience with AWS, Kubernetes, Docker, Terraform/Ia C and CI/CD/Git Ops. Data & Messaging: Strong Postgre SQL knowledge and experience with event-driven architectures, Kafka or equivalent, messaging and workflow patterns. Security & Observability: Good understanding of OAuth2/OIDC, IAM/RBAC, secrets management, secure SDLC and modern observability practices such as Open Telemetry, metrics, logs and traces. Industry: Experience in fintech, banking, payments or other regulated environments is strongly preferred. Leadership: Proven experience managing both internal engineers and external development teams, with the ability to challenge deliverables and maintain high technical standards. Mindset: Pragmatic, hands-on and comfortable working in a greenfield environment, balancing technical excellence, scalability, security and speed of delivery. Languages: Strong technical English (B2+). Spanish is a plus. Target Technology Stack Go
- AWS
- Kubernetes/EKS
- Docker
- Postgre SQL
- g RPC/Protobuf
- REST/Open API
- Kafka
- Terraform
- Git Ops
- Open Telemetry
- Prometheus/Grafana Experience with Keycloak, Vault, Temporal, Camunda or React/Next.Js is a plus.

📌 Tech Lead Of Development / Engineering Lead – Hands-On (Fintech Scale-Up | Spain) (España)
🏢 Antal International
📍 España