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