Available to hire
I’m Fabio de Sousa Lopes, a Senior Software Engineer and hands-on Solution Architect with 22+ years delivering production-grade web applications and distributed platforms across SaaS, fintech, legal-tech, and data-intensive domains. I excel at building portal-style user experiences with JavaScript/TypeScript (React/TypeScript, AngularJS 1.x) backed by secure REST APIs (Python FastAPI, Node.js/TypeScript), reusable UI patterns, and integration-focused backend automation. I’ve modernized legacy systems, defined API standards (OpenAPI), implemented reliability patterns (idempotency, retries/DLQ/replay, rate limiting), and built services with strong observability (OpenTelemetry/APM).
Skills
Experience Level
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Intermediate
Intermediate
Language
English
Fluent
Portuguese
Fluent
Spanish; Castilian
Advanced
Work Experience
Senior Software Engineer (Consultant) at LopixNet & EcoThinkTech
July 1, 2024 - November 28, 2025Architected and deployed RAG-style microservices using Python (FastAPI), LangChain, and FAISS on Kubernetes (AKS/GKE), scaling to over 500 requests per second with P95 latency under 300 ms for document and data query workloads. Designed and implemented Terraform + Helm infrastructure-as-code stacks (networking, namespaces, ingress, Helm releases), enabling reproducible multi-environment (dev/stage/prod) Kubernetes deployments with auto- mated rollbacks. Built Kafka and Debezium change-data-capture pipelines that replicate Oracle transactions into PostgreSQL and BigQuery in under 2 seconds, unlocking near real-time dashboards and analytics for internal stakeholders. Refactored a legacy portal into modular C++, Go, and Python microservices with mTLS, health checks, structured logging, and centralized tracing, reducing incident resolution time and simplifying debugging. Provisioned ephemeral Docker and Kubernetes QA environments per pull request, cutting validation cycle times by about 60
Senior Software Engineer, Backend & Platform at Minerva AI
June 1, 2024 - June 1, 2024Refactored legacy services into Node.js (Express, TypeScript) and Python (FastAPI, Django) microservices deployed on AWS Lambda and EKS, enabling independent service releases and significantly increasing deployment cadence. Designed Kafka + Redis event-driven pipelines for high-volume ingestion and processing of financial and regulatory documents, offloading heavy workloads from transactional APIs and reducing database load for downstream services. Implemented secure hybrid APIs (Node.js, Python) using OAuth2, JWT, and TLS/mTLS, integrating with existing C++ risk analytics engines while preserving strict audit and compliance requirements. Built Terraform + GitHub Actions CI/CD pipelines targeting AWS (Lambda, EC2, RDS, S3, SQS, SNS) and Azure, including schema migrations, security scans, automated tests, and canary deployments for safer production rollouts. Instrumented services with OpenTelemetry and Dynatrace for traces, metrics, and logs, then led profiling and tuning efforts that r
Sr Hardware / Senior Software Engineer at Tyto Robotics Inc.
April 1, 2022 - April 1, 2022Designed an asynchronous telemetry system using C++ for sensor ingestion and Python (FastAPI, asyncio, WebSockets) for real-time streaming, achieving sub-40 ms end-to-end latency from edge devices to GPU-accelerated dashboards. Built multi-OS CI pipelines with GitHub Actions and GoogleTest/Google Benchmark to validate correctness and performance across Linux, FreeBSD, and Windows targets before hardware field tests. Implemented secure telemetry and control-plane APIs with OIDC, JWT, and rotating TLS certificates, hardening communication between embedded devices, backend services, and operator consoles. Developed cross-platform drivers for Linux control boards and Windows sensor arrays, aligning low-level C++ modules with higher-level Python APIs and ensuring consistent behavior across operating systems. Integrated OpenTelemetry SDK into Python services to trace telemetry ingest, processing, and outbound APIs end-to-end, enabling faster root-cause analysis in telemetry pipelines.
Senior Software Engineer (Consultant) at Shabodi
November 1, 2021 - November 1, 2021Designed and delivered a 5G packet test harness using TypeScript async iterators and RabbitMQ to sustain high-throughput ingestion while keeping in-flight packets under 50k and memory usage stable. Integrated TensorFlow-based signal detection with D3.js visualizations, enabling interactive inspection of over 5 million SVG points for network anomaly analysis. Deployed containerized microservices on GKE Autopilot with Binary Authorization, enforcing strict image-signing and DevSecOps policies for production workloads. Modeled multi-region failover with Terraform and Velero, validating backup and restore strategies aligned with banking-grade SLAs. Built queue-based ingestion patterns with RabbitMQ and AWS SNS/SQS, standardizing high-throughput distributed testing workflows across the platform.
Senior Software Engineer at SoilOptix Inc.
September 1, 2021 - September 1, 2021Architected Python microservices with REST APIs in Docker and Kubernetes to process high-density soil and GPS-tagged datasets under strict SLAs. Led backend development of APIs consumed by a React and TypeScript front-end portal, enabling customers to explore complex geospatial outputs through interactive maps and analytics. Optimized PostgreSQL/PostGIS and MySQL queries via indexing, query rewrites, and Redis caching, improving geospatial query performance by about 35% and scaling to larger customer datasets. Built ETL pipelines with Python, Databricks, and PostgreSQL to standardize ingestion of sensor and soil sample data, improving reliability and traceability for analytics. Implemented interactive GIS maps with Leaflet.js and GeoJSON to visualize soil composition, nutrient levels, and pH gradients in near real time.
Researcher at Niagara College Canada
May 1, 2020 - May 1, 2020Built Python and Flask backend services exposing AI-driven disease detection and spectral imaging analytics over secure REST APIs for lab tools and field dashboards. Engineered dynamic lens control on a microcontroller with an RTOS using Python to synchronize servo movement and image capture across multiple wavelengths. Packaged Python services into Docker images and set up CI/CD with Travis CI, improving deployment reproducibility and reducing integration friction by about 40%. Integrated pandas, NumPy, and scikit-image into preprocessing pipelines for image normalization, feature extraction, and statistical aggregation before model inference.
Senior Python & Go Software Engineer / Software Architect at Softplan
January 1, 2018 - January 1, 2018Decomposed a PHP/Spring monolith into more than 30 Go and Node.js microservices on AWS (including EKS workloads), increasing deployment cadence roughly 4x and stabilizing uptime at 99.9%. Built a secure API fabric with OAuth2, JWT, RBAC, and TLS, plus Kafka-based audit trails, resulting in zero critical findings during external security audits. Authored Terraform-based infrastructure-as-code and AWS CodePipeline workflows, establishing consistent, auditable delivery processes across environments. Designed Kafka ingestion pipelines and Go parsers to process more than 25k legal and regulatory documents per day, enabling real-time analytics and compliance dashboards. Rolled out Dynatrace AppMon monitoring across 30+ Go/Node services and used performance data to reduce P99 latency from roughly 450 ms to 210 ms through targeted optimizations.
CTO & Co-Founder at Novarum Sky Ltda
May 1, 2017 - May 1, 2017Designed and delivered UAV telemetry infrastructure using Python, C#, and Node.js with AWS Lambda, DynamoDB, and API Gateway to handle low-bandwidth, high-latency rural connectivity. Built high-availability telemetry backends and streaming data pipelines integrating telemetry and imagery into GIS-style mapping workflows for agricultural operations. Implemented real-time dashboards using AngularJS and Socket.io to visualize live video, telemetry, and flight control feedback, supporting operational decisions in the field. Trained and deployed OpenCV and TensorFlow-based object detection models embedded in telemetry systems to support automated agricultural decision-making. Spearheaded design and implementation of risk management modules such as stop-loss, take-profit, and trend reversal algorithms for market automation strategies, lowering bot-driven capital losses.
Various IT Roles at Brazil (Nexxera, VEKA, Audaces, etc.)
February 1, 2013 - February 1, 2013IT infrastructure, software development, and leadership roles across multiple Brazilian companies; responsibilities included infrastructure management and software development.
CTO Founder - Senior Software Engineer Consultant at Lopix Neural Inc. (LopixNet)
July 1, 2024 - PresentDelivered portal-facing backend services for partner operations (Project: PartnerOps Hub) using Python (FastAPI) and Node.js/TypeScript REST APIs with versioned OpenAPI contracts and consistent auth/error patterns. Built reusable API scaffolding and shared middleware (Platform Service Kit), standardizing authZ, request validation, pagination, audit logging, and correlation IDs to improve code quality and reduce duplicated effort across teams. Implemented integration workflows with event-driven processing (Worklow Bridge) using EventBridge/SNS/SQS with DLQs, retries, and replay tooling to automate backend processes and reduce operational handoffs. Designed safe database evolution (Project: SchemaGuard) with PostgreSQL/Alembic migrations, pre-deploy checks, and rollback steps to reduce production incidents. Delivered read-optimized endpoints for dashboards (Project: Insight APIs) using MySQL replicas and Redis cache-aside + TTL strategies. Implemented multi-tenant access controls and aud
Senior Software Engineer at Minerva AI
June 1, 2022 - June 1, 2024Built internal investigation and admin portals (CaseLens Console) using React/TypeScript and Next.js. Implemented secure REST integrations (Evidence Gateway) with OAuth2/OIDC + JWT, request-level auditing, and standardized error contracts. Implemented ingestion and automation workflows (Intake Orchestrator) with Kafka and SNS/SQS to offload heavy processing from transactional APIs and reduce DB load. Built a high-throughput API layer (Case Data APIs) for read operations with AWS Lambda/API Gateway and DynamoDB, including JWT auth and key rotation via Secrets Manager. Modeled relational schemas with safe migrations, coordinated versioned changes across services, and instrumented services with OpenTelemetry and APM tools to reduce P95 latency. Built CI/CD workflows with controlled rollouts (Release Engineering) using Terraform and canary/blue-green strategies.
Senior Software Engineer at SoilOptix Inc.
June 1, 2020 - September 1, 2021Built backend services for a React + TypeScript customer portal with map-heavy filtering, exports, and workflow-driven reporting. Delivered shareable portal pages with Next.js SSR/SSG for improved navigation and performance. Implemented serverless upload automation (S3 events, Lambda, Step Functions) reducing manual intervention by 80% and standardizing data validation. Architected scalable backend microservices (Map Generation Platform) using Python (FastAPI/Django) in Docker/Kubernetes to meet SLAs. Optimized geospatial data access with PostgreSQL/PostGIS, MySQL, and Redis caching; built ETL pipelines (Databricks/Glue patterns) for sensor ingestion. Implemented IaC and release practices (Environment Factory) with CloudFormation to provision S3/RDS/Lambda/API Gateway consistently across environments.
Researcher Agriculture & Environment Innovation at Niagara College Canada
November 1, 2019 - May 1, 2020Built web-facing backend services for lab workflows (AgriLab Portal APIs) delivering Python (Flask/FastAPI) and C#/.NET REST endpoints for experiment submissions, results queries, and reporting. Implemented data preprocessing automation (Image Preprocessing Pipeline) with pandas/NumPy to standardize inputs. Designed PostgreSQL data models for reliable export/reporting. Built Node.js services for aggregation/reporting, integrating S3 storage and serverless preprocessing to reduce operational overhead. Packaged services into Docker and established CI/CD (Research Delivery), reducing integration friction across contributors. Implemented infrastructure automation (Lab Environment IaC) with CloudFormation for repeatable deployments.
Senior Python & Go Software Engineer / Software Architect at Softplan
July 1, 2017 - January 1, 2018Re-platformed a national legal-tech system by decomposing a PHP/Spring monolith into 30+ Go/Node.js services on AWS (EKS/Lambda/API Gateway). Increased deployment cadence and stabilized uptime. Built internal admin portals with modular UI patterns and real-time operational feedback. Implemented secure, integration-ready REST APIs (OpenAPI contracts, OAuth2/JWT, RBAC, rate limiting) to support 10k+ concurrent users with sub-200ms P95 latency. Created a serverless document workflow (Document Processing) handling 25k+ documents/day with retries and error handling. Implemented event-driven processing and audit trails (Compliance Event Bus) with Kafka/SNS/SQS. Automated delivery and deployments (Delivery Automation) with Terraform and CodePipeline/CodeDeploy. Improved observability and performance (Performance Program) with APM/CloudWatch, reducing P99 latency from 450ms to 210ms.
CTO & Co-Founder at Novarum Sky Ltda.
June 1, 2014 - May 1, 2017Delivered real-time operational dashboards (Operator Dashboard) using AngularJS + Socket.io for resilient portal UX over unstable links. Built backend REST services for mission management and telemetry (Node.js/Express, Python/Flask). Implemented scalable ingestion pipelines (Telemetry Pipelines) with queue-based processing. Introduced UI component reuse (Console Modernization) with React for operator consoles. Implemented serverless orchestration (Imagery Processing) with SNS/SQS to accelerate analytics. Managed IaC and release practices (Cloud Foundation) with CloudFormation for repeatable deployments. Led cross-functional delivery alignments with engineering, operations, and partners.
IT Infrastructure Specialist at Audaces Ltda.
February 1, 2010 - February 1, 2013Built internal operations dashboards (IT Ops Portal) with AngularJS to consolidate support views. Developed automation scripts for provisioning/monitoring to reduce manual effort. Migrated/integrated services with AWS (EC2/S3/RDS) to lower costs and improve availability. Implemented disaster recovery procedures with automated restore/validation checks. Built internal Node.js services for ops tooling and enhanced monitoring/log tooling to improve incident detection. Owned incident response and reliability across high-availability environments.
IT Manager at VEKA do Brasil Inc.
November 1, 2004 - November 1, 2009Managed IT operations for manufacturing environments, coordinating uptime-focused execution across critical systems. Built internal tooling and automation scripts to support operational workflows, reporting, and inventory management. Integrated data from production systems into reusable dashboards and services; implemented disaster recovery planning and ensured high availability.
Software Developer at Nexxera Tecnologia e Serviços S.A.
January 1, 2003 - February 1, 2004Contributed to backend development and integrations in a technology services context. Implemented data integration scripts and performance-oriented components supporting transaction processing and operational reporting.
Computer Engineer at Reason Tecnologia SA
January 1, 2002 - January 1, 2003Worked across engineering and systems development responsibilities, strengthening fundamentals in performance troubleshooting, systems thinking, and reliable delivery.
Electronic Technician at Lab Solda Universitas Ltda.
January 1, 1994 - September 1, 2000Built hands-on foundations in electronics, field troubleshooting, and reliability-oriented work practices in industrial environments.
Education
Bachelor's Degree in Software Engineering at Universidade do Vale do Itajaí (UNIVALI), Palhoça, SC, Brazil
January 11, 2030 - November 28, 2025Associate in Computer Science, Software Engineering at Niagara College, Welland, ON, Canada
January 11, 2030 - November 28, 2025B.Sc. Electrical Engineering at Universidade Federal de Santa Catarina (UFSC)
January 11, 2030 - January 1, 2005Qualifications
AWS Certified Solutions Architect – Associate
January 11, 2030 - February 10, 2026CCNP
January 11, 2030 - February 10, 2026CCIE (Written)
January 11, 2030 - February 10, 2026Certified Kubernetes Administrator (CKA)
January 11, 2030 - February 10, 2026Industry Experience
Software & Internet, Financial Services, Professional Services, Education, Agriculture & Mining, Media & Entertainment
Skills
Experience Level
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Intermediate
Intermediate
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