PHP, Golang Android/Kotlin MySQL, PostgreSQL, MongoDB, Redis, Memcached, RabbitMQ, Sphinx REST, XML-RPC, JSON-RPC OOP, Software Architecture, DB Architecture, Optimization Docker, Ansible, Helm, Kubernetes

I'm a programmer or developer, or whatever you call it these days. I would self-rate my skill as being intermediate to advanced, depending on the domain. I'm looking for remote part-time programming work, freelance or contract. I can do frontend, backend, or fullstack. I can also do scraping, write CLI programs and software libraries. I'm also available for other kinds of work like software maintenance or bug fixing. I'm not tied to any particular framework, I can learn on the job if given enough time.

Software Engineer I am a committed and efficient individual. I always focus on finding the best ways to do things with the goal of delivering a scalable product. I am highly solution-oriented. I love researching new technologies, proposing ideas, identifying, and solving problems. Throughout my career, I have worked with Golang, Python, Node.js, TypeScript, React, Vue, SQL, MongoDB, Azure, etc.

🏆 Top-rated Plus 🏆 5000+ Hours on Upwork 🏆 100% Success Rate on Upwork Product focused Engineer with 8+ years of production-grade experience with Golang along with expertise in Blockchain, cloud & devOps; from writing clean & lean CI\CD pipelines to containerization, container orchestration ( Kubernetes, Nomad) etc. I've been working with Top-notch organizations & startups throughout these years. Converting complex business requirements into tangible software requirements, coming up with system & Database architecture & writing secure, highly available & robust systems at scale is something that I've been doing for years. It's my passion to architect & build well-designed systems & clean code and I am looking for projects, where I will be trusted as an engineer. I always say that I'm not just a consultant (work done, give me money, bye-bye!) I rather like to work as if I was a partner; Someone who will make sure that they'll check all the boxes which will enable the actual business to succeed using their technical expertise. Key Metrics: ⭐️ 8 Years in Software Development (8 years in Go), 3+ years of Software design & architecture experience. ⭐️ Top Rated Plus & 100% Job success rate on Upwork. ⭐️ 5000+ Hours on Upwork. ⭐️ All 5.0 Ratings. ⭐️ AWS certified solutions architect associate ⭐️ GCP Certified cloud engineer ⭐️ Cloud Native Certified Kubernetes Administrator. ⭐️ 5+ years in Database Architecture & Software Architecture ⭐️ 5+ years in Docker & Kubernetes Back-end Development 🧑‍💻 Golang ☑️ Cosmos SDK, Wallet Integrations, CosmWasm, IBC and much more ☑️ Gin Gonic, Echo, Revel, Martini & Gorilla as web frameworks ☑️ Containerization using Docker & Kubernetes for container orchestration ☑️ Fluent with concurrent programming (go-routines, channels) ☑️ Gorm, go-pg as ORMs ☑️ GoMega & GinKgo, Go-mock, counterfeiter for Unit testing ☑️ go-wire for Dependency injection ☑️ structured logging with zap, zerolog, logrus & apex ☑️ Years of experience with code linters, especially, Golangci-lint (also a contributor) 🧑‍💻Cloud ☑️ AWS ( certified solutions architect ) - ECS over Fargate or EC2, Elastic Beanstalk, Cloudfront, AWS IOT core, Timeseries & Dynamo, S3, Lambda, EC2, Aurora & RDS, Secrets Manager & param store, VPCs, Security Groups & much more. ☑️ GCP (certified cloud engineer ) - Cloud Run , Cloud Run on GKE, Cloud PubSub, Firestore DB, Storage Buckets, File-storage, App Engine. 🧑‍💻 Databases (design, optimization, migration) ☑️ PostgreSQL ☑️ MySQL ☑️ Cloud Firestore ☑️ MongoDB ☑️ DynamoDB 🧑‍💻 Caching ☑️ Redis ☑️ Memcached ☑️ Key-vault 🧑‍💻 Also Experienced in ☑️ Docker & Kubernetes ☑️ RabbitMQ ☑️ Apache Kafka ☑️ Apache Schema Registry) ☑️ Prometheus , Grafana ☑️ Elastic Search, Kibana, Logstash, Filebeat. ☑️ Datadog, AWS cloudwatch I believe that software development is not just about writing code, it is rather about engineering a solution that helps people either by automating their existing business processes or by manifesting their ideas & imaginations into a complete end-product. Highlighted Skills: Golang, SQL, MongoDB, Cloud Firestore, Web Development , Mobile Application Development , Full Stack Development, Web Scraping , Writing Web scrapers, Data extraction, web crawling , Data mining, Scripting & Automation, API , API development, API integration , Go, Web Design, Responsive Design, Database Architecture , Software Architecture, Software Architecture & Design.

Computer Scientist and Mathematician. I use Rust, Go, Python and Typescript. Research and R&D. Feel free to reach out if you need help with any of these points of interest.

I build production backends for SaaS platforms and AI-powered products, systems where clean architecture, reliability, and real engineering decisions actually matter. Current work includes: - Backend infrastructure for a large-scale AI app-builder platform (TypeScript, Python, Next.js, AWS ECS/Fargate, multi-agent orchestration across 10+ services) - FinTech portfolio investment LLM for wealth managers (Go, PostgreSQL, REST APIs) - Real-time EV charging and IoT systems (Go, OCPP, MQTT, AWS IoT Core, Kinesis) What I can help with: - Backend APIs and service design — TypeScript/Node, Python/FastAPI, Go - AWS infrastructure — ECS, RDS, S3, Lambda, Terraform - AI product backends — LLM integration, agentic workflows, multi-service coordination - Event-driven and real-time messaging systems - SaaS MVP backends and production reliability improvements - PostgreSQL, Redis, DynamoDB I work best on projects that need someone who can own the backend end-to-end, from architecture to deployment. If your project fits, send me a message.

Senior backend developer specializing in Golang and Node.js, with deep expertise in API reverse engineering, mobile app security analysis, and large-scale automation. Skilled in scalable infrastructure, load balancing, and DevOps using Docker, Kubernetes, and cloud VPS environments

Enthusiastic, talented Senior Software Engineer with excellent programming skills, strong problem-solving abilities, quality-driven and customer-focused. Passionate not only about technology but also about applying it to improve people’s lives in new and innovative ways. Experienced in handling the entire software development life cycle, and used to working with a wide variety of technologies. A constant learner who motivates their peers. Self-motivated, positive, proactive and pragmatic, communicative and collaborative, and ready to take responsibility and ownership. EXPERTISE • Strong experience with Python, Go, Java, C, C++ and Lua; • Good Knowledge of Ruby and Js; • Solid experience with object-oriented design, and design patterns; • Experienced with UNIX operating system, including Linux for development and basic administration; • Familiarity with databases such as PostgreSQL, Oracle, MySQL and PL/SQL; • Experienced with OpenGL, 3D graphics, and ima​ging; • Great Computer Vision and OpenCV experience; • Good experience working with GUI development such as QT, Swing, and IUP; • Familiar with Web development: J2EE, Spring MVC, Tomcat, JSP, Servlets, JSF, HTML, CSS; • Good Knowledge with Multi-threaded and Client- Server programming; • Strong experience in design, unit testing, reviews, system testing, and requirements; • Experienced with all phases of product development lifecycle; • Experienced with source control systems like CVS, Subversion, JIRA, Buildbot and Hudson; • Familiar with agile methodologies as well as software planning and estimation techniques; • Strong commitment to life-long learning, enjoying teaching and mentoring; • Team oriented, encouraging the use of conventional procedures, practices, and tools; • Excellent written and verbal communication skills (English and Portuguese).

I design and build production systems that scale, stay secure, and perform under real-world pressure. I’m an expert Full-Stack Engineer focused on software & application development, distributed systems, cloud architecture, and DevOps reliability. I take full ownership of systems end-to-end, frontend, backend, data, messaging, real-time communication, infrastructure, and security. My work spans fintech, healthtech, gaming, real-time platforms, e-commerce, and data-driven products, where failure, latency, or security gaps are not acceptable. 🔥 What You Get Working With Me ⚙️ True Full-Stack Ownership Frontend, APIs, background workers, queues, real-time services, and infrastructure, designed and operated as one cohesive system. ⚡ Performance & Scale Low-latency APIs, efficient queries, async processing, and architectures that handle growth without rewrites. 🔐 Security & Compliance Awareness Secure auth flows, role-based access, encrypted data paths, and audit-ready backend design. ☁️ Cloud & DevOps Execution Automated CI/CD, containerized workloads, Infrastructure as Code, and production-grade observability. 🧠 Senior Engineering Judgment Clear tradeoffs, 80/20 execution, and decisions that avoid long-term fragility. 🧠 Core Expertise & Tooling Frontend Next.js (pages & app router), React, TypeScript shadcn/ui, TanStack Query, TanStack Table, Tailwind CSS State management, caching, SSR/SSG/streaming, performance tuning Backend Node.js, NestJS, Express, Golang, Django REST APIs, gRPC, background workers, schedulers Authentication, authorization, rate limiting, secure API design Architecture Microservices, modular monoliths, service boundaries Event-driven systems, idempotency, retries, backpressure handling Databases & Storage PostgreSQL, MySQL, MongoDB, Redis Firebase, Supabase, BigQuery, PocketBase Schema design, migrations, query optimization, caching layers Messaging & Async Systems RabbitMQ, Kafka, queues, pub/sub Workflow orchestration, job retries, dead-letter queues Real-Time & Media WebRTC, WebSockets Real-time signaling, presence, streaming, low-latency updates Cloud & Infrastructure AWS, Azure, GCP Docker, Kubernetes, Terrafor, Ansible CI/CD with GitHub Actions & Azure Pipelines Reliability & Observability Sentry, Prometheus, Grafana, ELK Structured logging, metrics, alerting, incident response 🎯 Where I Add the Most Value ✔️ Fintech, payments, and trading platforms ✔️ Healthtech systems with real-time communication ✔️ Gaming and high-concurrency platforms ✔️ Distributed backends with queues, gRPC, and microservices ✔️ Cloud-native systems built for long-term ownership 📞 Available for video calls to align on architecture, scope, and delivery strategy. If you’re looking for an expert who can design, build, and operate real production systems, my profile tends to make that clear, and the work confirms it.

As a Full Stack Software Developer with over 2 years of experience, I specialize in creating high-performance applications utilizing Golang and React. I am passionate about building scalable, efficient, and user-friendly web applications that deliver real value to clients. Languages: Golang, Typescript, Python Frameworks: Django, Flask, Go-Chi, Gin Gonic, ReactJS, ExpressJS Databases: PostgreSQL, Microsoft SQL Server, MongoDB, Redis Technologies: Kafka, Consul, OCP, Prometheus, Grafana, Jaeger I am committed to delivering projects on time and within budget, while maintaining open and transparent communication with clients throughout the process. Let’s connect and turn your ideas into reality!