Javad Rajabzadeh

Senior Software Engineer

Javad Rajabzadeh

Senior Software Engineer & Technical Lead
📍 Belgium / Remote | ✉️ ja7ad@live.com | 🌐 https://javad.dev | 🐙 GitHub | 💼 LinkedIn

Executive Summary

Results-driven Senior Software Engineer & Technical Lead with 9+ years of experience architecting high-performance backend microservices, decentralized blockchain networks (Layer 1, 2 & 3), and real-time AI/ML signal processing pipelines. Track record of leading cross-functional teams, publishing AWS Marketplace solutions, building ROS2 robotics modules, and contributing to core open-source infrastructure (TrustWallet Core, Meilisearch Go SDK).

Core Technical & Leadership Skills

  • Software Architecture & System Design: Distributed systems design, Go (Golang), Rust, Python, microservices architecture (gRPC), event-driven pipelines, API gateway design, database schema optimization (PostgreSQL, MongoDB, Redis), container orchestration (Docker, Kubernetes, Linux).
  • Technical Leadership & Business Strategy: Engineering team leadership, B2B/B2C SaaS product development, technical roadmaps, cloud cost & energy optimization, bridging complex engineering with business growth goals.
  • Blockchain & Web3 Infrastructure: Layer 1, 2 & 3 protocol architectures, consensus mechanisms, cryptographic key derivation & transaction signing (TrustWallet Core contributor), Filecoin Lotus devnet R&D, Solana NFT marketplaces.
  • Systems & Embedded Programming (Rust): Memory-safe systems engineering in Rust — concurrent multi-source network schedulers (HYDRA), embedded key-value storage engines for bare-metal microcontrollers (SLATE), and approximate nearest-neighbour vector search on constrained devices (SECTOR), including no_std targets, async runtimes, and energy-aware design.
  • AI, Edge Computing & Robotics: Quantized edge AI models (TensorFlow LSTM anomaly detection, deep Wiener-filter speech enhancement), ROS2 (Robot Operating System) robotics module engineering, real-time IoT pipelines (MQTT, ThingsBoard).

Professional Work Experience

Software Technical Lead & Senior SW Engineer

Sensifai | Belgium (Feb 2023 – Present)

  • Led technical design and development of enterprise B2B and B2C solutions utilizing deep learning, blockchain, IoT, and signal processing.
  • Engineered video recognition systems deployed on AWS Marketplace integrating multi-modal audio-visual AI models.
  • Architected ROS2 robotics integration modules (DoRAI) for real-time edge AI perception on autonomous robotic platforms.
  • Designed quantized deep Wiener-filter speech enhancement models (Q-WiSE) running on ultra-low-power edge hardware.

Lead Software Engineer

Ramooz / MedXFactor (Jan 2022 – Feb 2023)

  • Architected microservices-based Case Management cloud architecture using Go, gRPC, and MongoDB.
  • Developed concurrent Golang worker modules handling high-throughput production data pipelines.

Senior Software Engineer

farageek (Apr 2021 – Nov 2021)

  • Conducted Blockchain R&D for the Filecoin network, implementing Lotus group logic and Lotus Devnet infrastructure.
  • Built automated smart miner management tools integrated with pool telemetry.

Software Developer

Freelance (Mar 2013 – Mar 2021)

  • Developed utility software, desktop tools, and key verification software across an 8-year freelance span.

Key Projects & Open Source Contributions

  • HYDRA: Creator of a fast, resilient multi-source file retriever and download engine in Rust, built on a range-preemption scheduler. GitHub
  • SLATE: Rust key-value storage engine for edge computing (ESP32 to Raspberry Pi), balancing tiny memory footprint, performance, low energy use, and at-rest security. GitHub
  • SECTOR: Criticality-aware approximate nearest-neighbour vector search in Rust for microcontroller-class devices. GitHub
  • DoRAI (ROS2): Robotics AI perception framework built with ROS2 modules. GitHub
  • Q-WiSE: Real-time quantized speech enhancement model for edge hardware. Demo
  • TrustWallet Core: Contributed Layer 1 blockchain integration, transaction signing, and key derivation. GitHub
  • Meilisearch Go SDK: Official Golang client maintainer for high-speed search index engine. GitHub
  • OTP (Go Package): Creator of zero-dependency high-performance TOTP/HOTP/OCRA Go package. GitHub
  • Aerium: Core Maintainer of decentralized community governance protocol. Website

Honors & Awards

  • OC1 DORAI (Fortis / Sensifai): Directional and On-demand Robot Audio AI: Enhancing Human-Robot Interaction through Spatialized and Adaptive Audio Intelligence.
  • OC2 AquaSense Winner (NebulOuS Meta-OS): Designed real-time IoT water quality monitoring system using MQTT, edge Raspberry Pi devices, and a cloud TensorFlow LSTM model with 95% anomaly detection accuracy.
  • OC3 Q-WiSE Winner (Sensifai): Awarded for energy-efficient quantized speech enhancement AI on low-power devices.
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