Resume

Introduction

Staff systems software engineer with 15+ years building native applications, developer platforms, and AI infrastructure. I work at the boundaries between operating systems, browsers, devices, cloud services, and AI—finding the real failure boundary, defining the missing abstraction, and turning one-off technical wins into platforms teams can operate and extend.

Across roughly eight years of technical leadership, I have owned architecture and unblocked delivery for secure browser internals, confidential data platforms, and mission-critical RFID systems used by JPL (NASA) and Boeing. My strongest recent proof is Sky: a personal AI platform that connects browser, computer-use, vision, voice, and cross-channel memory as one production system.

Personal Website

Email – GitHub – LinkedIn – X (Formerly Twitter) – BlueSky

Projects

A personal AI-agent platform — browser, computer-use, and cross-channel memory — alongside standalone reverse-engineering and systems work. Full set at heliasar.com/projects.

Skynet

Reimplemented the architecture behind OpenAI’s Atlas browser from scratch: a native C++23/Qt shell, an out-of-process CEF runtime service, zero-copy GPU frame transport, and an authenticated control surface for AI agents.

Highlights: Architected a versioned two-process browser platform with a stateless Qt shell and CEF runtime, zero-copy dma-buf/Vulkan rendering on Intel and NVIDIA, authenticated crash-resilient CDP control, and a reverse-engineered runtime reusable across Skynet and Codex Desktop.

→ Full write-up

sky-cua

Designed and built a cross-platform computer-use platform for AI agents, spanning native desktop automation, browser control, Android integration, packaging, deployment, diagnostics, and developer tooling.

Highlights: Built a portable Rust client/service architecture and cut the agent tool surface from 66 tools to 34 schema-validated actions spanning semantic and physical desktop input, browser and Android control, native Linux and Windows backends, structured diagnostics, packaging, and VM-tested deployment across major MCP hosts.

→ Full write-up

Sky Smart Comms

Built the cross-channel memory system for a personal AI agent: it ingests email, WhatsApp, SMS, phone, LinkedIn, and postal mail and unifies them into durable topics with research, linked notes, and next actions.

Highlights: Designed a trigger-synchronized SQLite knowledge ledger combining hybrid retrieval and cross-channel identity resolution with adversarially verified triage, human-gated next actions, and closed-loop preference learning measured by shadow metrics and a layered evaluation harness.

→ Full write-up

emeet-cam / EMEET PIXY Controller

Reverse engineered an undocumented USB camera protocol and turned it into an automation platform: native Linux tooling, browser interfaces, diagnostics, protocol replay, live preview pipelines, and workflows controllable by AI agents.

Highlights: Converted traced HID/libusb traffic into reusable Rust tooling and portable transport/device seams, then built repeatable observe/replay/verify workflows plus a live GPU enhancement pipeline spanning ONNX/TensorRT super-resolution, temporal denoising, and low-light correction.

→ Full write-up

Experience

Sumwall · Senior Software Engineer · 2025-2026

Worked on a secure Windows browser for enterprise SASE providers, bridging deep web platform knowledge with native C++ development, Chromium/CEF integration, and Windows systems behavior.

• Debugged and patched a custom CEF offscreen rendering pipeline, restoring reliable software rendering in virtualized environments where GPU acceleration was unavailable or constrained.

• Designed an AI-driven browser validation framework that automated complex end-to-end testing across native and web surfaces.

• Implemented Traffic Steering functionality to route browser activity through managed enterprise security policies, connecting browser behavior, networking constraints, and SASE product requirements.

• Turned a basic encrypted file store into a Chromium-backed VFS storage layer, securing browser profiles, local storage, and persistent web data without breaking Chromium storage expectations.

Xplore Group Spain · Senior Backend Engineer, Consultant · 2024-2025

Consultant on a confidential data platform for a major automotive manufacturer, working under strict confidentiality and data-handling controls.

• Designed reliable high-volume data pipelines processing billions of records with robust recovery and operational safeguards.

• Collaborated within a distributed team (Belgium, Spain) to build scalable, highly tested, and modular solutions.

• Partnered with Cloud Infrastructure teams to enhance deployment pipelines, optimizing resource usage and achieving significant cost savings for the client.

Latency Data · Senior Full-Stack Engineer · 2023-2024

• Delivered core product capabilities for an online investment analysis platform across frontend, backend, data visualization, and economic-model integration.

• Partnered with data science to translate complex economic algorithms into reliable product workflows and interactive analysis surfaces.

• Streamlined core project architecture, improving maintainability and making feature delivery faster across the stack.

SEDDI · Senior Software Engineer · 2023

• Delivered 2D and 3D web tooling for clothing design, spanning interactive rendering, image-processing workflows, and product-facing UX.

• Led a progressive TypeScript migration with Playwright/Jest testing and linting to improve reliability, code quality, and development speed.

• Bootstrapped a centralized component architecture that made future design-tool development easier to extend.

Voicemod · Technical Lead · 2021-2023

• Led the migration of a C# desktop application to a cross-platform C++/Qt architecture with ZeroMQ services and a Vue frontend.

• Coordinated delivery across multiple teams, unblocking architecture, build, packaging, and dependency-management issues.

• Created Python tooling and CI workflows for dependency management, multi-binary builds, and Apple Silicon support.

NDA Protected Projects · Technical Lead · 2014-2020

• Served as Technical Lead for mission-critical RFID inventory-control systems used by high-stakes clients including JPL (NASA) and Boeing.

• Designed embedded-device control software, cloud integration, back-office/POS systems, and operational tooling across constrained and legacy environments.

• Solved severe field failures under unusual constraints, including retrofitting modern cloud software for RHEL 5 and debugging RFID readers remotely over satellite links.

Earlier independent engineering and consulting · 2010-2014

Awards

• CodeCrafters.io prize for building an HTTP server from scratch in Rust in 1 month

Languages

• Spanish (Native)
• English (Bilingual)
• Catalan (Elementary)
• French (Basic)
• Norwegian (Basic)

Technologies

Core Languages: Rust, TypeScript, C++, Go, Python

Strong Experience: JavaScript, C, C#, SQL

Systems & Architecture: Platform engineering, systems architecture, distributed systems, IPC, concurrency, protocol design, state machines, observability, reliability, fault tolerance, diagnostics, native desktop automation, browser automation

AI Infrastructure & Automation: MCP, AI-agent tool surfaces, computer-use automation, workflow orchestration, evaluation harnesses, browser control, Android ADB automation, CLI tooling

Web & Product: React, NextJS, Svelte, Vue, SolidJS, HTMX, HTML, CSS, WebSocket, REST APIs, D3, Three.js

Data & Storage: PostgreSQL, MySQL, SQLite, MongoDB, Elasticsearch

Operating Systems & Cloud: Linux, RedHat/RHEL, Windows, macOS, Android, iOS, AWS, Azure

Embedded, Native & IoT: Arduino, ESP32, RFID, MQTT, ZeroMQ, memory management, low-level programming, multithreading, Qt, QML, UWP, WPF, XAML, Xamarin

Tools & Practices: Git, CI/CD, code review, testing strategy, Playwright, Jest, ESLint, Conan, Bash, PowerShell, Agile/Scrum, technical leadership