Open to opportunities

Diogo Santos Martins

@diogosantosmartins

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AI-focused Principal/Team Lead engineering leader driving production-grade ML and LLM systems.

Portugal

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What I'm looking for

I seek leadership roles in fast-paced, AI/ML-focused companies where I can architect production-grade systems, mentor engineers, and improve CI/CD and observability.

I am an engineering leader and AI engineer with strong hands-on experience architecting, deploying, and operating production-grade AI systems and scalable backend platforms. I have led multidisciplinary teams and mentored engineers while shaping long-term product and technology vision.

My recent work includes designing LLM-based reasoning workflows with LangChain/LangGraph, building knowledge-augmented solutions backed by Neo4j, and operating services on Azure AKS with observability, testing, and security best practices. I have also driven backend architecture for mission-critical systems, improved DevOps and CI/CD pipelines, and delivered high-scale web APIs serving millions of users.

I bring deep Python expertise along with experience across C#, Rust, TypeScript, Haskell, and infrastructure tooling, and I seek to join fast-paced companies focused on AI/ML where I can lead technical teams to deliver reliable, impactful products.

Experience

Work history, roles, and key accomplishments

Team Lead / AI Engineer

SalusOptima

Sep 2025 - Jan 2026 (4 months)

Led a multidisciplinary engineering team to design and deploy LLM-based due diligence solutions, improving risk analysis workflows and productionizing models with Azure and Kubernetes.

Python LangGraph Neo4j Kubernetes Azure AI Foundry Azure Blob Storage fastAPI Docker

Principal Engineer

Masunga

Nov 2024 - Jun 2025 (7 months)

Led design and implementation of scalable backend systems for energy and utility access across Africa, shaped product and technology vision, and improved CI/CD and observability practices.

Python Flask TypeScript PostgreSQL Kubernetes Docker CI CD Grafana DevOps

Senior Python Developer

VR Smart Guide

Nov 2023 - Oct 2024 (11 months)

Improved and developed microservices to enable core product launch, secured processing of sensitive data, and integrated Airflow to streamline data workflows and scalability.

Python fastAPI Flask Airflow PostgreSQL Docker Grafana Pytest OpenAPI

Python Lead Developer

QuickCheck

May 2022 - Nov 2022 (6 months)

Led a team of 7 to develop a web API serving over 1M users, transitioned a monolith to microservices, and improved CI with Semgrep and containerization while building KYC and fraud detection systems.

Python Django REST Framework PostgreSQL Docker Gitlab CI Semgrep Firebase Sentry

Backend Developer

COCUS Portugal

Sep 2021 - May 2022 (8 months)

Developed internal automation tools and IaC solutions for a telecommunications client, integrating Ansible to streamline provisioning and collaborating with front-end teams.

Python Django REST Framework Ansible PostgreSQL Docker Gitlab CI

Project Engineer

Critical Software

Oct 2019 - Aug 2021 (1 year 10 months)

Built an automated predictive QA tool for a German railway client that strengthened quality control and improved testing workflows across the project.

C Python Antlr ASP.NET Core QA Automation

Project Engineer

Critical Software

Oct 2020 - Nov 2020 (1 month)

Contributed to MVP data-transfer projects for German railway clients to streamline data migration and improve operational efficiency across services.

Python Urllib BeautifulSoup Docker Data Migration Integration

Project Engineer

Critical Software

Aug 2020 - Sep 2020 (1 month)

Developed a POC device interface for a medical client, delivering a prototype integration between hardware and software components.

C WPF PoC Development

Project Engineer

Critical Software

May 2018 - Sep 2019 (1 year 4 months)

Revamped the front-end of a legacy financial web application for 1.9M users and migrated JavaScript to TypeScript to modernize user experience and code quality.