CV
The Portfolio

NELSON
LOURENÇO

Software Engineer with 15+ years of experience in high-performance distributed systems. Proven track record in banking, telecom, and blockchain sectors.

Contact

Lisbon, Portugal

nelson.str@gmail.comLinkedInGitHub

Core Skills

"I operate at the intersection of robust backend engineering and the decentralized future. From securing telecom systems to architecting Layer 3 blockchain solutions, my career is defined by resilience and complexity."

Blockchain Tech

OP Stack, CosmosSDK, Solidity, Smart Contracts.

Infrastructure

Kubernetes, Docker, AWS, GCP, IaC.

Leadership

Team Lead capable. Mentorship & Team Building.

The Arsenal

An exhaustive collection of 140+ tools, frameworks, and protocols powering the architecture.

Ollama
Ollama
AnythingLLM
MCP
Web3.js
Web3
Solidity
Solidity
Ethereum
Ethereum
Tendermint
Cosmos SDK
IPFS
IPFS
OpStack
OpenJDK
Java
Go
GoLang
TypeScript
TypeScript
JavaScript
JavaScript
Solidity
Solidity
React
React
PostgreSQL
PostgreSQL
pgvector
Kubernetes
Kubernetes
Docker
Docker
Redis
Redis
NGINX
NGINX
Ubuntu
Ubuntu
Node.js
Node.js
NestJS
NestJS
Spring Boot
Spring Boot
Hibernate
Hibernate
Oracle
MySQL
MySQL
MongoDB
MongoDB
Supabase
Supabase
SurrealDB
SurrealDB
Vercel
Vercel
Kind
Kustomize
K9s
Tilt
YAML
YAML
Protobuf
Web3j
TypeORM
TypeORM
GORM
Go Ethereum
Docker Machine
Testcontainers
minikube
Skaffold
Skaffold
HTML5
HTML5
AngularJS
Apache HTTP Server
ES6
Sass
Sass
CSS 3
VirtualBox
VirtualBox
GraphQL
GraphQL
Scala
Scala
Vagrant
Vagrant
MariaDB
MariaDB
SQLite
SQLite
Apache Tomcat
Apache Tomcat
Markdown
Markdown
Docker Compose
Play
OData
Oracle PL/SQL
Jackson
Red Hat
JBoss
Liquibase
Liquibase
Java EE
Mustache
Flyway
Flyway
Websphere
Oracle Weblogic Server
n8n
n8n
Qdrant
curl
cURL
Firebase Authentication
Auth0
Auth0
Radar.io
Postman
Postman
Insomnia REST Client
OpenAPI Specification
Fisheye
Apache Kafka
Kafka
Elasticsearch
Elasticsearch
Piwik
Java Persistence API
Zookeeper
Soap UI
Apigee
GitHub
GitHub
Git
Git
ReadMe.io
pre-commit by Yelp
GitLab
GitLab
GitLab
GitLab CI
Swagger UI
Jira
Jira
Visual Studio Code
SonarQube
TRUFFLE
Sonatype Nexus
Pulumi
Pulumi
Jest
Jest
Datadog
Datadog
Prometheus
Prometheus
Jenkins
Jenkins
Kibana
Kibana
npm
npm
IntelliJ IDEA
IntelliJ IDEA
OpenCode
Vim
Vim
Sentry
Sentry
Gradle
Gradle
Sourcetree
SourceTree
Selenium
Selenium
Yarn
Yarn
ESLint
ESLint
Ansible
Ansible
Notepad++
JUnit
Mockito
Apache Maven
Apache Maven
SBT
SVN (Subversion)
Cucumber
Cucumber
Apache Ant
Apache Ant
Apache JMeter
Apache JMeter
Instrumental
PMD
FindBugs
Bitbucket
Bitbucket
Notion
Notion
Trello
Trello
Bonita BPM
Stack Overflow
Stack Overflow
Confluence
Confluence
Slack
Telegram
Telegram API
Technical Leadership
Team Enablement
Team Leadership & Coaching
Context Engineering
Jira
Scrum
Trello
Kanban
Atlassian
Agile

Trusted By Industry Leaders

Private
Corporate Technologies
Private Bank / Swiss Tech
L3
Interval.xyz
L3 Blockchain
Assets
Qredo
Assets Bridge / Crypto Custody
ConsenSys
CodefiAssets/ Infura
Swiss
Rolex
Swiss Luxury
CIB
BNP Paribas
CIB Banking
Automotive
BMW Munich
Automotive
Consulting
NTT Data(Everis)
Consulting
Core
CGD
Core Banking
Telecoms
AlticeLabs(PT Inovação)
Telecoms

The Journey

Lead Software Engineer

Pictet Technologies
May 2026 - Present
Lisbon, Portugal
  • Low code - AppWay
  • Software engineer - using Java, Spring Boot, and Kubernetes.
  • Conduct technical interviews.
  • Promote AI tools in development.
  • Dev2Dev - sharing knowledge with other developers.
JavaSpring BootTypeScriptAngularKubernetesDockerAWSAzureAppWayCursorGeminiAntigravityKiloCode

Blockchain & Backend Software Engineer

Interval.xyz (Stealth)
April 2024 - Present
USA / Remote / Lisbon, Portugal
  • Architecting and deploying a highly scalable Layer 3 solution using the OP Stack.
  • Designed and implemented a custom blockchain firewall to enforce granular enterprise policies (geo-fencing, whitelisting).
  • Developed advanced POCs for seamless Web2/Web3 authentication and transaction signing using Auth0, Firebase, Privy, and MetaMask.
  • Orchestrated the end-to-end CI/CD lifecycle on AWS and GCP using Docker, Kubernetes, and Kustomize.
  • Created enterprise-grade, reusable modules for seamless L3 integration.
GoLangCursorTypeScriptNestJSAuth0FirebasePrivyMetaMaskRemixSolidityEVMOP StackKubernetesAWSKustomize

Software Engineer

Freelance
September 2023 - May 2024
Remote
  • Enterprise Core: Architected a secure, modular backend using Spring Boot for a veterinarian industry platform.
  • Reactive Frontend: Developed an Angular interface focusing on data visualization and intuitive enterprise workflows.
  • Web3 MPC Wallet: Engineered a robust custody solution utilizing MPC (Multi-Party Computation) for keyless transaction signing.
  • High-Performance Backend: Developed a low-latency, scalable GoLang and gRPC infrastructure for real-time transaction processing.
  • Cosmos Integration: Utilized the Cosmos SDK to build custom app-chains enabling modular blockchain functionality.
DockerSpring BootJavaWeb3GoLangMySQLPostgreSQLAngular

Blockchain & Software Engineer | Technical Lead

Qredo
December 2022 - September 2023
London, UK / Remote / Lisbon, Portugal
  • Cross-Chain Asset Locking: Architected and developed an abstract Layer 1 asset-locking component (deposit and settlement).
  • Cosmos Integration: Led integration of Cosmos-based chains (Atom, Kava, Osmosis, Celestia) to support decentralized settlement.
  • Stacks L2 Integration: Integrated QChain with Stacks to enable sophisticated asset monitoring and settlement processing.
  • Infrastructure Optimization: Refactored the Qredo Block Explorer, achieving a 30% improvement in throughput.
  • Production-Ready Deployment: Deployed critical features using Docker, Kubernetes, and Helm on AWS.
  • API Engineering: Developed robust communication layers utilizing gRPC, JSON-RPC, and REST APIs.
  • Conducted professional technical interviews and defined hiring standards for the engineering department.
GoLangCosmos SDKgRPCREST APIsDockerKubernetesAWSPostgreSQLStacksBlockchain

Blockchain & Software Engineer

ConsenSys
April 2021 - December 2022
USA / Remote
  • Infura Infrastructure: Provisioned high-availability data centers across physical locations globally to build Infura’s core infrastructure.
  • DeFi Protocol Engineering: Engineered modular and extensible backend solutions for varied financial protocols, enabling scalability and robustness.
  • Blockchain Engineer Contractor: Delivered critical infrastructure using Docker, Pulumi, and Ansible, focusing on Arbitrum Nitro DAC.
  • Codefi Assets: Built a regulatory compliant RWA (Real World Assets) tokenization platform.
  • Filecoin MVP: Contributed to the development of early-stage Filecoin secondary retrieval markets.
GoLangSolidityPulumiCodifi AssetsInfuraArbitrumEVMTypeScriptGETHKubernetesAWSLibP2PTruffle

Technical Lead | Software Engineer

BubbleGo - TechFirm Portugal
October 2020 - November 2021
Lisbon, Portugal
  • Engineering Leadership: Established and directed a high-performance GoLang chapter, establishing code quality and architectural standards.
  • Full-Stack Architecture: Designed scalable microservices using GoLang and Vue.js, transitioning complex legacy systems.
  • SDLC Optimization: Implemented customized Gitlab-CI pipelines utilizing Kustomize and Skaffold, drastically reducing deployment times.
GoLangk8sminikubekustomizeskaffold

Technical Lead | Software Engineer

BNP Paribas - CIB (analytics systems)
June 2019 - October 2020
Lisbon, Portugal
  • ML-Driven Data Delivery: Engineered a sophisticated Python-based ecosystem incorporating machine learning for intelligent content curation.
  • Monolith to Microservices Transition: Championed the architectural migration of core CIB platforms from legacy Rancher deployments to advanced Kubernetes environments.
  • Real-Time Data Pipelines: Engineered robust SGR feed integrations using Kafka to stream market data.
  • Liquibase Integration: Spearheaded the implementation of Liquibase for automated database state management.
  • Continuous Delivery & Quality: Leveraged Jenkins and SonarQube to dramatically elevate deployment frequencies.
JavaSpring BootGoLangReactKubernetesDockerKafkaNLPMachine LearningSkaffold

Technical Lead | Software Engineer

BubbleGo - TechFirm Portugal
September 2018 - June 2019
Lisbon, Portugal
  • Licensing Management Ecosystem: Engineered a scalable MEAN-stack ecosystem for Rolex, driving modernization across digital property management.
  • Component-Based Frontend: Spearheaded the development of a modular Single Page Application (SPA) using Angular components for enhanced reusability.
  • High-Concurrency Backend: Built asynchronous, non-blocking REST APIs leveraging Node.js and MongoDB.
  • Containerized Deployments: Engineered zero-downtime CI/CD pipelines deploying Docker containers onto managed Kubernetes (Rancher) infrastructure.
dockerNode.jsAngularMongoDBRancherminikubekustomizeJenkinsGitlab

Technical Lead | Software Engineer

BMW
June 2016 - September 2018
Lisbon, Portugal / Munich
  • Car Configuration Engine: Developed the backend logic and integration points for BMW's flagship digital car configuration platform.
  • Factory-to-Dealer Integration: Built scalable Java/Spring middleware ensuring seamless inventory and pricing synchronization across European dealerships.
  • Legal Compliance Automation: Implemented automated compliance checks and data scrubbing protocols within the sales funnel.
  • Nearshore Team Leadership: Founded and scaled the Lisbon engineering hub for BMW Munich, driving recruitment and establishing agile practices.
JavaSpring FrameworkAngularDockerWebSphereAgileScrum

Software Engineer

CGD (Caixa Geral de Depósitos)
June 2015 - June 2016
Lisbon, Portugal
  • Credit Risk Engineering: Architected and developed core workflow processes for enterprise white-label credit risk assessment systems.
  • CI/CD Architecture: Spearheaded the modernization of legacy deployment practices by deploying and configuring enterprise-wide Jenkins CI/CD pipelines.
  • Financial Data Integrity: Delivered robust Java EE solutions optimizing transactional throughput on Oracle Databases for critical banking operations.
Java EEOracle DatabaseWebSphereEnterprise SecurityPerformance TuningJiraCI/CD

Software Engineer / Technical Lead

Altice Labs-PT Inovação
September 2001 - June 2015
Aveiro, Portugal
  • High-Performance Core: Engineered a robust internal application server framework utilizing advanced non-blocking I/O architectures (Java NIO), delivering exceptional throughput and low latency tailored for high-volume telecom workloads.
  • Distributed Systems Modernization: Championed the architectural transition from legacy proprietary solutions toward scalable, standards-based product platforms serving millions of global subscribers.
  • Carrier-Grade Reliability: Designed and optimized mission-critical Operational Support Systems (OSS) guaranteeing 99.999% uptime for core network operations.
  • TM Forum Certification: Achieved and maintained crucial technical process certifications, ensuring strict adherence to international telecom standards.
  • Engineering Mentorship: Cultivated a culture of technical excellence by mentoring over 50 engineers across diverse global teams during a 10+ year decadal journey.
JavaJ2EEWebSphereOracleLinuxPerformance ProfilingDistributed SystemsAPI DesignDevOpsAgile
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