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 gRPC/Protobuf, REST/OpenAPI , API versioning, authentication, retries and idempotency.
- Cloud & Infrastructure: Production experience with AWS, Kubernetes, Docker, Terraform/IaC and CI/CD/GitOps .
- Data & Messaging: Strong PostgreSQL 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 OpenTelemetry, 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 • PostgreSQL • gRPC/Protobuf • REST/OpenAPI • Kafka • Terraform • GitOps • OpenTelemetry • 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) - madrid
🏢 Antal International
📍 Madrid