Senior/ Middle Golang Engineer (AI Labs) Lisboa

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Overview

Join our team as a foundational senior engineer to help us evolve from a
- oriented squad into a platform team powering secure, global financial services and telecommunications offerings. We are building the intelligent backbone that powers and protects millions in
- border transactions, and your expertise will be critical in shaping its future.

Responsibilities

• Today, we build and operate critical systems in the
  - fraud, compliance, marketing, pricing and customer care domains.
• Your mission is to guide us through our next chapter: building a robust Platform that other engineering and data science teams will use to ship their own features.
• You won't just be writing services; you'll be architecting the foundational systems that enable faster, safer innovation across the company
• True Impact: You will have a direct hand in building a platform from the ground up. Your work will enable secure financial access for families across the globe
• Technical Leadership: This is a senior role with high autonomy. We will rely on your skills to guide our architecture and technology choices
• A collaborative environment in a team of skilled, passionate professionals

What You-'ll Build & Own

• Platform Core: Design, build, and optimize
  - performance Golang microservices that will serve as the backbone for our new platform
• ML Infrastructure: Automate and enhance our MLOps pipeline using MLflow
• Tackle challenges like dynamic model selection,
  - challenger patterns, and shadow mode deployments to make our systems more agile and intelligent
• Dynamic Workflow Engine: Integrate ML models and business rules directly into our customer verification workflows, moving beyond static configurations to a dynamic,
  - driven system
• Data & Feature Engineering: Develop scalable ETL pipelines and feature stores to power
  - time model inference and complex aggregations for compliance monitoring
• Cloud-Native Foundation: Own and evolve our infrastructure on AWS (EKS, Kafka, SQS, Open
  Search, etc. ), with a strong focus on observability (Prometheus, Grafana, Splunk), reliability, and incident response

Required Qualifications

• A proven track record (4+ years) of designing, building, and shipping
  - grade systems in Golang
• Deep experience with
  - native architectures on AWS (or similar), including container orchestration (Kubernetes/EKS) and managed services (Kafka, SQS)
• Strong engineering fundamentals: distributed systems, databases (SQL/No
  SQL), and API design
• A passion for solving complex business problems with elegant technical solutions
• You see the "big picture" without losing sight of the critical details
• Excellent communication skills (English B1+) and the ability to guide technical strategy and mentor peers

Nice-to-have

• Experience building internal platforms or developer tools for other engineering teams
• Knowledge of ML systems lifecycle (training, serving, monitoring) and tools like MLflow
• Familiarity with workflow engines (e. g. , Camunda, Temporal) or rule engines (e. g. , Grule, Drools)
• Background in the Fin
  Tech, marketing,
  - fraud, or compliance domains
• Hands-on experience with
  -
  - code (CDK, Terraform) and a keen sense for operational excellence

What We Offer

• Remote work flexibility – work from anywhere
• B2B contract with competitive gross compensation in USD
• Top-tier hardware to support your productivity
• A challenging role in a team of skilled professionals
• Continuous learning and career growth opportunities
• Coverage for professional development: training, seminars, and conferences
• Access to
  - quality English lessons

We may use artificial intelligence (AI) tools to support parts of the hiring process, such as reviewing applications, analyzing resumes, or assessing responses. These tools assist our recruitment team but do not replace human judgment. Final hiring decisions are ultimately made by humans. If you would like more information about how your data is processed, please contact us.