Hey, get stuck while vibe coding or wanna build MVP? 🧐 Then reach me out here. I can help you perfectly. I don’t just code - I architect, optimize, and deliver industry-leading backend systems, full-stack web platforms, and intelligent desktop applications that redefine performance and scalability. My mastery spans Java, PHP, Rust, GO, Python, Tauri, PyQt, and modern DevOps practices, enabling me to tackle the toughest technical challenges with precision and creativity. Core Strengths Backend Architecture: Scalable, secure, and lightning-fast APIs and microservices ⚡ Full-Stack Mastery: End-to-end web and desktop app development (React/Next, Laravel, Symfony, FastAPI, Tauri, PyQt) 🖥️ AI Integration: Advanced AI agents, OCR solutions, and automation for real-world impact 🤖 DevOps Excellence: CI/CD pipelines, Docker/Kubernetes, cloud deployments (AWS/GCP/Azure/DO), Github Action ☁️ Project Powerhouse Engineered a high-traffic e-commerce backend (Symfony) supporting 10k+ concurrent users 🛍️ Built a Tauri (Rust) desktop app for inventory management, slashing manual work by 60% 📦 Deployed AI-powered OCR and agent systems, automating document processing and boosting efficiency by 40% 📑 Delivered a full-stack analytics platform (Java/Spring Boot) for real-time business insights 📊 Automated CI/CD and cloud workflows, reducing release cycles by 50% and maximizing uptime 🔄 Why Choose Me? I merge deep technical expertise with a relentless drive for innovation, transforming complex requirements into high-impact, future-ready solutions. From backend engineering to AI integration and DevOps, I deliver excellence at every stage. Available 40+ hours/week in your timezone 🌏 Let’s build something extraordinary—fast, secure, and ahead of the curve! 💡🚀✨

I'm a developer with an experience building highly-performant graphics systems, automation systems and real time monitoring utilities. I prefer Rust for development and I also have experience building applications and utilities with Typescript, Python. I've written frontends and backends for projects using React.js, Nextjs and also worked with flask I've dabbled with Data preprocessing while working with telemetry data, AI and Predictive models like BERT and VADER for sentiment analysis. I've worked on managing and building homelab and large compute clusters, services with proxmox,k8s,pihole Finally, i've worked on porting system softwares, written low level USB HID, worked along side device drivers, with Rust and C.

I'm a systems-level software engineer specializing in Rust, C++, and low-level infrastructure development. I build high-performance tools that operate close to the metal—from PostgreSQL extensions and database proxies to file system monitors and network protocol implementations. My work spans the full stack from systems programming (FUSE, Wire Protocols, libp2p) to database engineering (PostgreSQL, distributed systems) and backend development with JavaScript/TypeScript. I've delivered production solutions at Meta that reduced debugging time from minutes to seconds, built systems handling over 20,000 concurrent users, and contributed to major open-source projects, including ParadeDB. Whether you need custom database tooling, performance-critical CLI applications, or systems integration work, I create reliable and efficient solutions that scale.

I architect robust systems and develop full-stack solutions for complex technical challenges. As a Sr. Systems Architect, Data Scientist, and Full-Stack Engineer, I bring a unique blend of expertise in high-performance computing, memory optimization, and secure infrastructure. I design and implement systems that not only meet stringent technical requirements but also drive commercial success. Why I’m Different: While many developers integrate APIs, I build solutions from First Principles—addressing challenges like: Running advanced 7B LLMs on edge devices Securing networks against zero-day vulnerabilities Creating crash-proof Rust backends Delivering seamless full-stack applications My background, including the Teixido-Boreal Paradigm in deep-tech research, ensures I apply scientific rigor to all stages of software development and system architecture. Core Services 🚀 AI & LLM Optimization (Python/PyTorch) Model Quantization & Pruning: Deploy models on edge devices without sacrificing accuracy. Memory Efficiency: Pioneered solutions that reduce VRAMusage by 23x. Agentic Workflows: Develop autonomous agents that handle complex tasks independently using LangChain/LangGraph. 🦀 High-Performance & Full-Stack Systems (Rust/WASM/C++ & Node.js/JavaScript) Zero-Backend Architectures: Utilize Rust/WASM for secure, efficient browser-resident engines. Full-Stack Development: Build complete applications using modern frameworks (e.g., Ruby on Rails, React), from backend services to user interfaces. System Daemons: Design and implement crash-safe, efficient services for Linux/Windows systems. 🛡️ Cybersecurity & Anomaly Detection Zero-Sh Threat Detection: Craft detection engines for identifying novel threats through behavior-based analysis, achieving a verified 97% recall on zero-day threats. ⚡ Hardware & Signal Processing (Verilog/FPGA) Design synthesizable IP cores tailored for low-power signal processing and anti-jamming applications in hardware startups. Tools & Technologies Languages: Python, Rust, C++, JavaScript, Go, Verilog Frameworks & Platforms: PyTorch, Rust/WASM, Node.js, Ruby on Rails, React, LangChain, Docker, AWS Specialized Tools: WebAssembly (WASM), Web Workers, SageMath Key Achievements >37x Energy Efficiency: Architected frameworks that enhance energy efficiency, validated through deep-tech research. >23x VRAM Reduction: Implemented systems that broke the "Memory Wall" for startups, optimizing resource usage. Zero-Backend Compliance Engine: Developed a secure, high-performance browser-resident system using Rust/WASM. Note to Clients I focus on complex, high-value problems where performance, security, and mathematical rigor are essential. Whether your project involves: Zero-backend architectures Memory-safe, multi-threaded systems Comprehensive full-stack application development ...I am equipped to deliver solutions that exceed expectations. LinkedIn: John Victor Teixido GitHub: johnvteixido

Low latency distributed systems. Pixel perfect frontends. Everything in between. ✅Frontend: HTML, CSS, JS, TS, React, Vue, Svelte, Web3, Ethers, Yew, Leptos ✅Backend: Solidity, Rust, Golang, Python, Node, C, C++ ✅Protocol: Solidity, Anchor, Pinnochio, Quasar, Assembly, Hardhat, Foundry

🔥 I help startups and F500 companies (Pfizer, Deutsche Bank, ING, Upwork, KLM, Ford) build, scale, and ship global SaaS products faster, acting as a complete full stack developer and mobile app developer so you don't need to assemble a full team just to get moving. If your project needs a highly interactive frontend built by a specialist react developer using vue and angular, a scalable .NET or golang architecture, a custom CMS handled by a senior wordpress developer, or a dedicated Back End Developer building secure Rust and solana microservices, I cover it as your full stack developer and software developer, so you get one point of ownership instead of five disconnected specialists. My deep expertise in JavaScript, PHP, and AI integrations, combined with an understanding of saas sales and saas marketing, means the SaaS applications I build are engineered to actually convert and scale, not just function. ⭐ Certified full stack developer, react developer, software developer, & saas developer Top Rated+ | 🏆 100% full stack developer Success for every SaaS contract utilizing React, Vue, angular, Node.js, Python, Golang, and Rust | ⭐ 5-star Rating for web, mobile app developer projects, AI, Web3 via solana, and SaaS | 💰 $300K+ earned delivering excellence as an elite full stack developer, web developer, software developer, and wordpress developer. Whatever stage your product is at, I bring extensive full stack developer and software developer expertise across web, mobile, and SaaS platforms to get you there,seamlessly integrating AI models and Web3 components (including Solana smart contracts) into robust web systems built for your business, not just for the demo. Whether architecting a new SaaS platform in .NET, optimizing core financial engines in Rust or golang, deploying a custom theme as a wordpress developer, boosting technical infrastructure for saas marketing and saas sales, or scripting in Python for complex data processing, my full stack developer and saas developer approach covers every web and AI requirement your project throws at me. My skills as a full stack developer, react developer, software developer, saas developer, web developer, mobile app developer, and Back End Developer: React (lead react developer, MERN stack) Vue Angular Node.js Python Golang .NET (Web APIs, legacy migrations) Rust (memory-safe modules, solana ecosystems) PHP (stable databases) JavaScript (core & advanced ecosystems) WordPress / custom CMS AI model integrations Web3 / Solana smart contracts iOS/Android (mobile app developer) Agile & Scrum delivery Stack of technologies I use as your full stack developer: ✅ Frontend: React, Vue, Angular ✅ Backend & APIs: Node.js, .NET Web APIs, Golang, PHP ✅ Data & scripting: Python (complex data processing) ✅ Blockchain: Rust-based Solana microservices, Web3 smart contracts ✅ CMS: bespoke WordPress builds and custom themes ✅ AI: model integrations for smart SaaS features ✅ Mobile: iOS/Android builds as mobile app developer By combining core JavaScript, advanced React/Vue/Angular ecosystems, scalable Node.js and Golang microservices, stable PHP databases, and smart AI features, I deliver exactly what you need from a top-tier full stack developer, cross-platform mobile app developer, software developer, and Back End Developer. Industries where I bring solid full stack developer, software developer, and saas developer experience, relying on flawless custom SaaS execution under real load: ✅ Finance (FinTech SaaS platforms, data analytics via Python, golang, Rust) ✅ PropTech (SaaS dashboards, interactive UIs via JavaScript, vue, angular, React) ✅ HRTech (SaaS workflows and tooling) ✅ Travel (SaaS booking and management platforms) ✅ eCommerce (SaaS web portals via .NET and PHP) As a dedicated React full stack developer, react developer, Node.js Architect, elite Back End Developer, and strategic SaaS developer, I blend AI performance, Golang APIs, and Rust (including Solana blockchains) into your traditional SaaS workflows — as your full stack developer, web developer, and mobile app developer, all in one. 🔥 Backed by certification as a full stack developer Engineering and Solution Architect Expert (Ph.D. CS, PMP, CSP, CSM, CSPO, ICP-PPM, MCP), I deliver Agile/Scrum SaaS solutions as a lead full stack developer, dedicated react developer, software developer, and saas developer focused on turning your web, AI, React, Vue, angular, Rust,Solana, Golang, and .NET goals into a shipped product. Managing cross-functional teams as a full stack developer, I ensure strict coding best practices across dynamic React, Vue, and angular UIs, iOS/Android builds guided by a senior mobile app developer, Node.js, Golang, and PHP backends, Web3 Solana integrations, legacy .NET migrations, bespoke CMS builds managed by a wordpress developer, and sophisticated Python integrations designed to maximize your Saas sales and Saas marketing ROI. *Last Updated: 09.07.2026

I build and fix high-performance backend and real-time systems in Rust, where latency, throughput, and correctness are the numbers that decide whether the product ships. When a service stalls under load, drops data, or cannot keep up in real time, I find the wall and remove it. I publish original benchmark research on async-runtime failure modes, so that reasoning behind a fix is legible, not a black box. What I do - Performance engineering in production Rust: diagnosing and removing tail latency, executor starvation, lock contention, false sharing, allocator pressure, and missing backpressure. These rarely show from the symptom alone. I find the real cause with tokio-console and flamegraphs and prove the fix with before-and-after p99 numbers. - High-throughput data and compute infrastructure: real-time ingestion and streaming pipelines with bounded end-to-end latency, exactly-once processing, crash recovery, and horizontal scaling with automatic failover. Hot-path in-memory work split from a cold analytical store so latency-sensitive processing never waits on historical queries. - Real-time systems with hard guarantees: lock-free SPSC ring buffers, single-copy handoff, no dropped samples, determinism treated as a requirement rather than a hope. - Rust and WebAssembly: compute and rendering compiled to wasm32 and running in-browser via WebGPU, native-class performance with no server round-trip. - GPU-accelerated processing and visualization of high-frequency sensor data: hundreds of channels at kHz rates with signal-processing compute (FFT, filtering, fusion) inside the same frame, native and in-browser. The hardest end of the real-time spectrum, where most CPU tooling gives out. - C, C++, Java and Python to Rust migration: the FFI boundaries, unsafe, and zero-copy interop that do not auto-port. Recent work - A high-throughput ingestion pipeline sustaining 40-plus events per second with zero drops: write-ahead-log crash recovery, gap detection with source fallback, and an auto-healing design built to scale past 5,000 events per second, with a hot in-memory path separated from a cold TimescaleDB store for historical and backtest queries. - Original research on async executor starvation showing a 101x p99 scheduling-overhead increase when blocking code saturates the runtime's workers, instrumented with tokio-console. When to hire me You have a domain-first product in instrumentation, hardware, infrastructure or cluster observability, robotics, sensing, or finance, and it is blocked by a hard systems problem outside your team's discipline, where getting the abstractions, the latency, and the correctness right matters more than shipping fast. That is the work I am built for. #Skills Rust, WebAssembly, Asynchronous Programming, Concurrent Programming, Systems Programming, Performance Optimization, Backend Development, gRPC, Microservices, Distributed Computing, Real-Time Data Processing, PostgreSQL, Apache Kafka, Linux, Embedded Systems, C++, C, GPU / Parallel Computing, Graphics Programming, API Development

Rust Blockchain Infrastructure & Distributed Systems Engineer | Solana • Move VM • High-Performance Backends I build production-grade Rust backend infrastructure that powers blockchain protocols, RPC services, data pipelines, and distributed systems. My code doesn’t just “work” — it is correct, observable, fault-tolerant, and built to survive real-world load. If you need a Rust engineer who understands systems, protocols, reliability, and scale (not just feature coding), I design infrastructure that future teams can maintain with confidence. What I Do I specialize in blockchain infrastructure and backend engineering: • Distributed systems & high-throughput backends (Rust) • RPC / JSON-RPC / gRPC servers for blockchain nodes & validators • Durable execution engines, intent pipelines & submission systems (Solana) • Move VM runtime & smart contract execution layers • Async message brokers & event pipelines (Kafka, NATS, Redis Streams) • On-chain data ingestion, indexing & wallet analytics pipelines • Observability, structured logging, tracing & fault-tolerance • Performance optimization, memory profiling & horizontal scaling • Internal protocols, serialization & deterministic execution I actively build and maintain open-source Rust projects focused on durable execution, high-performance RPC services, transaction security, and blockchain data pipelines. Engineering Values Most engineers focus on features. I focus on systems that survive real-world load. That means: ✔ Clear boundaries & clean interfaces ✔ Deterministic, predictable behavior ✔ Structured error handling & recovery paths ✔ Observability + metrics + tracing ✔ Performance-aware async design (Tokio/Axum/Tower) ✔ Maintainable code & backwards compatibility My systems are readable, testable, diagnosable, and operable. Typical Projects Clients hire me to: • Build or fix Rust backends for Solana, Move, or multi-chain protocols • Design durable execution platforms and RPC infrastructure • Implement high-throughput data pipelines and indexing services • Add reliability, observability & fault-tolerance to existing systems • Optimize latency, memory usage and throughput • Integrate Kafka/NATS/Redis for blockchain event streaming Good Fit For ✔ Blockchain infrastructure teams, validator operators & DeFi protocols ✔ Companies scaling on-chain data or RPC services ✔ Technical founders who need production-grade Rust systems ✔ Long-term reliability & maintainability, not quick hacks Not a fit for: ✘ Pure frontend or mobile-only work ✘ “Just ship an MVP” projects with no reliability requirements Tech Stack Languages: Rust (primary), TypeScript Rust Ecosystem: tokio, axum, tower, tracing, serde, sqlx, reqwest Blockchain: Solana, Move VM, JSON-RPC, validators & oracles Data & Infra: Postgres, Redis, RocksDB, ClickHouse, Kafka, NATS Tools: Docker, Linux, Nix, CI/CD, AWS, bare metal My Philosophy Production systems must be reliable, understandable, maintainable, observable and upgradeable. I write code that fails loudly and predictably, surfaces metrics, scales horizontally, isolates failures, and treats correctness as a non-negotiable feature.

I'm an open-source programmer looking to capitalize on his skill set. I specialize in Rust and I'm a regular contributor of bugfixes and features to various open-source projects involving the language. My expertise lies in low-level optimizations, the notable ones I did for the main rust-lang umbrella being: * Polly optimizer to rustc * Alternative aliasing rule (`#repr(transparent)`) to rust-bindgen * Well-received prototypes for fast-math floating-point optimizations I'm comfortable with `unsafe` Rust code and interop with C or C++. I've been coding since 2009 and have used various programming languages besides those two. Can probably pick up C#, Python, Java, Kotlin or Scala within a day or two if the situation calls for it. Recently did a non-trivial personal project involving the WebRTC standard and I would say I'm reasonably confident in my knowledge of: * Its underlying base protocols (DTLS, SRTP, and SCTP) * Congestion control algorithms * Video encoding involving H.264 and its transport

I am a lead software engineer working across various tech stacks. My strengths: * Focus on understanding of client's needs. * Hands-on experience building reliable and scalable software. Products I built are affecting thousands of organizations across the world. * Strong technical design skills * Application security * Pro-active communication and transparency My stack: * Backend: Go, .NET or Python/ Rest API, gRPC, GraphQL * Frontend: React, Next.js * SQL (MySql, SQL Server, Postgres) and NoSQL databases (Amazon DynamoDB, MongoDB) * RabbitMQ/Kafka/SQS * Redis * Kubernetes, Docker/Podman, ProxMox, Terraform, Ansible * Gitlab CI/CD, Github Actions