Hire the Best Embedded Systems Engineers
in Brazil

With 10 years of experience in developing hardware, firmware, and documentation for medical devices and Software as a Medical Device (SaMD), I have specialized in designing safe and compliant systems. I am well-versed in: • IEC 60601-1 (General Safety) • IEC 60601-1-2 & IEC TR 60601-4-2 (EMC) • IEC 62304 (Medical Software) • ISO 13485 (QMS) • ISO 14971 (Risk Analysis) • IEC 60601-2-57 (Non-laser light) • IEC 60601-2-18 (Endoscopes) • IEC 60601-2-83 (Heat lamps) • IEC 62471 (Non-laser light risk) • IEC 60825-1 (Laser safety) • Related FDA guidelines → Hardware Development • End-to-End PCB Design: From schematic capture and layout to prototyping and validation for rigid, flexible, and metal-core substrates. • Specialized Circuit Design: Expertise in analog front-ends for sensitive biometric data, efficient power converters, and robust sensor interface circuits. • Design for Manufacturing (DFM): Creating designs optimized for cost, reliability, and scalability in a production environment. • Supply Chain Coordination: Managing communication and prototyping with component suppliers and PCB manufacturers. → Firmware Development • Microcontroller Expertise: Proficient with a range of architectures, including Atmel/Microchip (Atmega, ATxmega, SAM), STM32, and ESP32. • Programming Languages: Primary development in C for embedded systems, with Python and MATLAB used for testing, automation, and data analysis. • Structured Development: Emphasis on modular code, comprehensive documentation, and verification testing to support regulatory audits. → Regulatory Pathway • Regulatory Strategy & Liaison: Acting as your technical interface with certification bodies and test labs. • Documentation Authoring: Hands-on creation of all necessary technical file documents, including: --- Product Requirements & Design Specifications --- System and Software Test Plans --- Risk Management Files (per ISO 14971) --- Software documentation (per IEC 62304 and FDA guidance) • Testing Management: Developing test plans and managing the compliance testing process with my network of ILAC-certified labs, ensuring significant cost savings compared to European or American labs.

● Experienced Software Engineer with over six years in national and multinational companies, delivering scalable solutions across diverse industries. ● Strong background in Python development (2+ years), specializing in data pipelines, automation, and interactive applications. ● Skilled in databases (PostgreSQL, SQL, Firebase, Supabase) with expertise in data modeling, querying, and integration into applications. ● Proficient in software engineering practices: unit testing, modular design, version control (Git/GitHub), and collaborative workflows. ● Hands‑on experience with cloud environments (AWS, Google Cloud) and scripting for automation. ● Solid knowledge of data analysis and visualization, transforming raw datasets into actionable insights and dashboards. ● Additional expertise in embedded systems and automotive communication protocols (CAN Bus, LIN), offering unique value in real‑time data and hardware/software integration. ● Fluent in English (C1) and Spanish (B2), with international experience working in multicultural teams.

I help companies design, debug, and optimize complex electronic hardware, particularly PCB systems involving high-speed interfaces, RF, signal integrity, power architecture, and difficult manufacturing or validation problems. My work ranges from focused PCB design reviews and troubleshooting to complete hardware development, including system architecture, component selection, schematic capture, multilayer PCB layout, simulation, prototype bring-up, validation, and manufacturing release. I have five years of industrial, freelance, and academic engineering experience, including two years in R&D at Furukawa Electric. My background spans hardware development, validation, QA, and test engineering, giving me practical experience with the problems that appear not only during PCB design, but also during fabrication, assembly, bring-up, environmental testing, and field operation. A recent project involved the electromagnetic simulation and optimization of a GMSL2 serializer-to-FAKRA PCB interconnect up to 6 GHz. I developed a reproducible KiCad-to-openEMS workflow and evaluated transmission-line geometry, connector launches, vias, anti-pads, reference-plane transitions, S-parameters, impedance, and return loss to identify practical improvements before hardware validation. My main areas of work include: — RF, high-speed, and controlled-impedance PCB design — Signal integrity and electromagnetic simulation — PCB design review and troubleshooting — RF interconnect and connector-launch optimization — Multilayer, BGA, and mixed-signal hardware — Power architecture and low-power electronics — Prototype bring-up, debugging, and validation — DFM, DFA, DFT, and manufacturing release I also develop embedded and IoT hardware involving STM32 and ESP32 platforms, cellular and wireless connectivity, industrial communication interfaces, sensors, battery-powered systems, and mixed-signal circuitry. My project experience includes GMSL2, LTE/NB-IoT, GNSS, LoRaWAN, CAN, RS-485, Ethernet, I²C, SPI, UART, BLE, Wi-Fi, industrial telemetry, RF gateways, sensor interfaces, analog audio electronics, and embedded control systems. Depending on the project, I can deliver: — System architecture and engineering recommendations — Schematics and multilayer PCB layouts — Stackup and controlled-impedance requirements — PCB design reviews and technical risk assessments — BOMs and component sourcing alternatives — Gerber, drill, pick-and-place, and manufacturing files — Electromagnetic simulation models — S-parameter and Touchstone files — Prototype bring-up and debugging support — Test procedures and validation plans — Engineering reports and manufacturing documentation My designs consider return-current paths, grounding, impedance discontinuities, EMI/EMC risks, power integrity, thermal behavior, component availability, assembly limitations, test access, and practical debugging from the beginning. The objective is not simply to produce a PCB that passes design-rule checks. It is to reduce board revisions, manufacturing problems, and unexpected behavior during validation. My main engineering tools include KiCad, Altium Designer, openEMS, Python, EasyEDA Pro, and ParaView. I maintain my own electronics laboratory with an oscilloscope, spectrum analyzer, bench equipment, soldering and rework tools for prototype assembly, bring-up, troubleshooting, and validation. I am based in Brazil and maintain strong working-hour overlap with clients in the United States and Europe. If you have a new hardware design, a PCB approaching fabrication, or an existing board that is not performing as expected, send me the schematics, PCB files, requirements, or current test results. I can review the design, identify the main technical risks, and recommend the most effective path forward.

I help businesses identify vulnerabilities, analyze network traffic, and improve their cybersecurity. My services include: • Vulnerability assessment and basic penetration testing (web, network) • Network traffic analysis using Wireshark • Intrusion detection and monitoring (Snort) • Security auditing and system hardening (Linux/Windows) I have hands-on experience with tools such as Nmap, Nikto, Burp Suite, and Wireshark, applying OWASP Top 10 and MITRE ATT&CK methodologies. I can help you: • Detect security issues in your system • Analyze suspicious network activity • Improve your system security configuration • Support basic SOC operations and log analysis As a Computer Engineer, I bring a deep understanding of systems, allowing me to identify vulnerabilities more effectively and provide practical solutions. Additional experience: • Backend development (Python, Java, REST APIs) • Embedded systems and IoT (ESP32, Arduino, C programming)

💡Let's transform your SaaS idea into a revenue-generating MVP in 30 days, helping you find product-market fit 3x faster and secure your first paying customers. Let's make it happen! 🏆Achievements and Happy Customers! • Rescued an Agriculture SaaS business (Itricorp) by rebuilding their failing core platform into a better version just in time to secure their market position. ➡️ "I could say what I needed, and ByteNaNa turned it into code." - Jim Etro, CEO, Itri Corporation • Partnered with a garage startup to build their entire IoT SaaS platform, scaling Watchdog Home Monitor into a successful, market-ready business. ➡️ “The team is extremely responsive and easy to speak with.” - Trey Welstad, CEO, Snowbird • Led the successful launch of a B2C SaaS (GenoStories) on the App Store & Google Play by rescuing and stabilizing its failing legacy codebase. ➡️ "What impresses us most about Bytenana is their ability to deeply understand the emotional purpose behind our product." - Alba D Reboyras, Co-Founder, Genostories Inc • Engineered a mission-critical Industrial IoT SaaS for the mining sector, enabling predictive maintenance and significantly reducing costly operational downtime. ➡️ "They listen to the problem and deliver software that works at a fair cost." - James Trace, CEO, Multotec • Developed a custom content automation SaaS that saved us the full cost of a dedicated social media employee every month. ➡️ "Bytenana is the best place to work!" - Bytenana Team (It is true! People love working here.) 🧠Consultants first, developers second. We work side-by-side with founders, CTOs, and operations leads to solve real business problems — not just ship code. 🧐🧐🧐🧐 Hey, no need to believe us, check the verified reviews from our customers and also demo videos in the portfolio below. (I mean, our faces are there, can't make that up!) 😌😌😌😌 ------------------------------------------------------------------------ ⚙️Our Tool Box 🤖 AI TECHS LangChain | n8n | Make | OpenAI/GPT-4 and other models | Pinecone | Supabase | RAG | AI systems | Lovable.ai | Cursor.ai | Aider → Sales Pipeline and Follow-up Automation • Deep Personalization Cold Outreach System • Proposal Automation System • AI-Powered Content Creation for Social Media Lead Generation • SEO AI Content Producers • Recruiting and Candidate Screening Automation • AI Chatbot 🔍 Context Engineering → Deep requirement elicitation with AI-powered discovery sessions eliminate guesswork and ensure pixel-perfect delivery and fast prototyping. 🌐 Frontend & Visualization Mapbox GL | React | JavaScript | PowerBI | Tableau | Superset → Interactive maps • Real-time dashboards • Mobile-responsive UIs 🗄️ Backend & Databases PostGIS/PostgreSQL | GeoServer | Node.js | Express | GeoDjango | Java Spring | Next.js | N8N | Swagger → Spatial query optimization • Feature services • High-concurrency APIs • API Development • API Integration ☁️ Cloud Infrastructure AWS (Lambda, S3, RDS) | GCP | Docker | Kubernetes | Serverless | Azure | CloudFlare | → Scalable pipelines • Cost-optimized architecture • CI/CD deployment 💡💡Send us a message and let's schedule a call!💡💡

I am a senior software engineer with 10 years of experience building backend systems and platforms. My career is defined by a strong technical foundation. Additionally, working on long-term projects across multiple fields and challenges has made me a versatile professional with an extensive and solid background. I am specialized in building scalable, highly available, and reliable systems using microservices architectures with C#, .NET, AWS, and Kubernetes. From the game industry, I bring a strong background in fast prototyping and in developing highly performant, well-structured, and reusable solutions. Beyond the technical side, I work closely with the product team, working as a bridge to overcome communication challenges, prioritize development efforts, and deliver highly profitable solutions. 🛠️ 𝗦𝗞𝗜𝗟𝗟𝗦 𝗔𝗡𝗗 𝗧𝗢𝗢𝗟𝗦 C# • .Net • Microservices • Docker • Kubernetes • gRPC • REST • Entity Framework • SQL • AWS(SNS, SQS, EC2, S3, Lambda, RDS, EKS, ECS, ECR, CloudWatch) • CI/CD • Argo • CDK • Redis • Rabbitmq • Nunit • Git • Automated Tests • Performance Optimization • Fast Prototyping • Clean Code • Github actions • Cloud 🚀𝗛𝗜𝗚𝗛𝗟𝗜𝗚𝗛𝗧𝗘𝗗 𝗖𝗢𝗡𝗧𝗥𝗜𝗕𝗨𝗧𝗜𝗢𝗡𝗦 - Contributed to the development of the largest 3D simulator commissioned by the Brazilian Army, delivering key features, as well as driving fundamental refactorings and critical performance optimizations that were essential to the simulator’s stability, scalability, and user immersion. - From its inception, I contributed to the architecture and development of the world’s first Decentralized Identity Network — a system capable of processing 300+ million transactions per month to prevent fraud, adopted by 120+ clients. Within this system, I drove the delivery of an MVP under a tight time-to-market, a key milestone that brought Google Pay as the largest enterprise client.