With over 15 years of hands-on experience as a Senior Engineer and Team Lead in software engineering, I am dedicated to delivering high-quality software solutions. I specialize in the development of Windows Desktop applications, Web services, and Database applications. Core Expertise: .NET Development: C#, WinForms, WPF, ADO NET, EF, DevExpress libraries C/C++ Development: C, C++, MFC, WinAPI, Boost, FLTK Web Services & APIs: REST API, WCF, Azure Functions Database Management: SQL, MS SQL Server, MySQL DevOps Tools: TeamCity, Azure DevOps In addition to my core competencies, I also specialize in porting legacy Windows-based C++ code to cross-platform C++ solutions suitable for Android and iOS applications. My commitment to professional excellence is demonstrated through continuous learning and the pursuit of certifications, including the Microsoft Certified: Azure AI Fundamentals. This credential highlights my ability to apply AI and machine learning principles using Microsoft Azure to enhance the solutions I develop. I am committed to excellence and prioritize delivering solutions that meet or exceed customer expectations. With keen problem-solving skills and meticulous attention to detail, I ensure each project is completed to the highest standard. My dedication to professional growth means I am always eager to learn and adapt to new technologies. Let's collaborate to bring your project to life with innovative and efficient software solutions.

✅ TOP 1% on Upwork (expert vetted badge) ✅ 100% Job Success rate ✅ 6K completed hours ✅ 14 years of experience with almost any popular web technology stack over more than 20 projects. Summary of skills: - 8 years backend web (Ruby on Rails, TypeScript, NodeJS, Redis, Python, Elastic, Kafka, RabbitMQ) - 5 years frontend web (NestJS, Angular, React, Redux, NgRx, TS, Vanilla JS) - Experience with GCP, AWS, Docker, K8S, Django, Ionic, KnockoutJS, Material UI Strong experience with all kinds of databases (PostgreSQL, MySQL, MSSQL, IndustrialSQL, Oracle, Mongo, Sqlite) - CI and administration experience (managing GCP, AWS, creating Docker images, configuring Jenkins, Teamcity, NGINX, sphinx) - More than 5 years working remotely with distributed teams and individuals in USA, Europe, Russia - Fluent English, good communicator, always respond wittin few hours Currently working on: Senior Backend Software Developer at corecircle.com - fitness app with REST API - ongoing support and features to REST API with TypeScript + NestJS + PostgreSQL + Redis - manage GCP infrastructure - USA based team with remote developers - over 200000 users and 50000+ active users each day Previous jobs: 1) 1 year as Fullstack Software Developer at trackmyprogress.com - educational app and admin panels for USA schools - adding features both for frontend and backend, migrating legacy PHP app to Rails, integration with third-party API - RoR + Postgres + React for admin panel - test-completion webapp on Angular - USA based team with remote developers - Staging and production environments on AWS 2) 1 year Software developer at Blood and Treasure USA based team with remote developers - digital training platform for NIKE - Cordova webapp on Angular - Rails with Graphql and Postgres - Staging and production environments on AWS - improving, maintaining and refactoring ongoing project both on frontend and backend 3) 1 year Software developer at Typefox.io International distributed team with base in Germany - developers for developer - cloud IDE on typescript and python - open source and private IDE development - writing core features for underlying language debugger and builder 4) 2 years TeamLead at ridero.ru (ridero.pl) Book self-publishing: text editor, cover editor, prepare to publish, prepare to print copies - single page application - 80k authors, - terabytes of book data - lots of backend microservices with NodeJS - frontend react.js and knockout.js - Docker, Teamcity and Jenkins for CI Usual tasks include: - Part-time Project Management (preparing tasks for small team) - Localisation to 4 languages, automatisation of process - writing converters from one file format to other - generating random book covers - handling contest project with 100k voters - creating and writing calculator for print copies with complicated mathematic model 5) Website guide to restaurants and entertainment places (luckyducky.ru) Lead Developer (2 years, still maintain project) - strong optimisation for search engines and pagespeed (top1 or page1 in google for hundred of querys) - 30k unique users/month without any Google Direct or AD, only organic traffic - Python Django with custom JavaScript framework - deploy and maintain all dev and prod enviroments 6) framework for one of the larges Steel company in Russia One-time contract, only me as developer and system administrator - successfull deployment and remote support for 1 year - heavy mathematical base for optimising their ore combiners - 3% percent of optimisation and quality gain results in $100k/months more income - integration with their databases (Oracle + IndustrialSQL, 100k queryes daily) - complete integration with standalone isolated network (no access to internet) - custom web-interface (PHP Symphony Framework) - online analytics based on math-model (calculations and rendering charts)

I am a software developer with much experience building web apps from the ground up. I've done work from front end to back end, including dev ops config. If you need maintenance or upgrades on your existing application, or help starting something entirely new, I can do that.

Amit Kumar — Founder & CEO, TradeOrbit Global I'm building the future of digital transformation. At TradeOrbit Global, we're not just developing software—we're architecting the AI-first businesses of tomorrow. My Journey: Senior Full Stack Developer & AI Engineer with 4+ years scaling startups and enterprises. I've navigated every stage of the tech stack—from frontend React magic to backend microservices to cloud infrastructure—and founded TradeOrbit to bring complete end-to-end digital solutions to businesses ready to compete at the highest level. What We Do: TradeOrbit Global is your partner for complete digital transformation. Web & mobile apps, custom software, CRM/ERP, cloud architecture, UI/UX, SEO, and performance marketing—everything under one roof. No vendor juggling. No fragmented solutions. Where We're Headed — Agentic AI: The next frontier isn't AI assistance. It's AI agency—intelligent systems that autonomously act, optimize, and grow your business. We're building: ✓ AI Agents & Autonomous Workflows ✓ Intelligent Automation & Process Optimization ✓ Machine Learning & Predictive Systems ✓ Emerging AI Technologies for Unstoppable Competitive Edge Philosophy: Technology that thinks. Solutions that deliver. Growth that compounds

Full stack architect/developer with 12 years experience in Web. Back-end: NodeJS, Express, PHP, Symfony Front-end: Typescript, JavaScript, React (Next.JS), Vue Dev-ops: AWS Services, Docker, K8s, Nginx, MySQL, PostgreSQL, MongoDB

Full Stack and AI engineering leader who designs and builds production-grade applications using React, Node.js, Python, and AWS. Amazon and Verizon alum with deep experience in distributed systems, IoT platforms, real-time data pipelines, and applied AI/LLM integrations. Hands-on developer comfortable building frontend interfaces, backend APIs, ML pipelines, and cloud-native architectures. Combines strong product intuition with the ability to architect, code, and deploy intelligent systems that scale globally.

PROFILE With more than 10 years in software development, I have extensive experience designing and producing mobile and web applications in different sectors. Also passionate about data, I pay particular attention to its importance within the company. I have already implemented several Business Intelligence projects for more than 9 years. Based on concrete achievements, I have a very good knowledge of backend programming languages, mainly Python with Django, and also a good understanding of Laravel and Symfony. A very good knowledge of mobile development with Flutter and React Native and also web development with React. Very good knowledge of Business Intelligence technologies such as PowerBi (Excel PowerQuery), file processing techniques, relational database systems, and also NoSQL such as MongoDB or Hadoop.

I am a software engineer completed Masters in Management Information Systems from Daffodil international University. Successfully completed several Web and Mobile projects. I am also an IoT developer and worked with several platforms like AVR, Microchip PIC, Arduino, ESP8266, ESP32, Raspberry pi etc. My Skills: Salesforce FreshSales IRS eServices API TDS/SOR TalkDesk API/Webhooks NetSuite API Django stack (Python/Django/Redis) Ruby on Rails (Rails 2/3/4/5/6) MEAN stack (Express/MongoDB/AngularJS/Node.JS/Sails.JS) LAMP stack (Laravel/Codeigniter) Angular.JS (1.x and Angular2 with TypeScript) React.JS MySQL DBMS MongoDB PostgreSQL Javascript with various frameworks (jQuery, React.js) Android IOS Phonegap React Native IoT Raspberry Pi Jetson Nano Arduino ESP8266 ESP32 AVR PIC STM32 STM8 OpenMV OpenCV Machine Vision Computer Vision MQTT (Mosquitto) GSM/GPS NRF24L01+ LTE Cat M1 (LTE-M) NB-IoT LoRa/LoRa WAN (Worked with both 868MHz [Europe] and 433MHz [Asia]) Jetson Nano (Artificial Neural Network ANN) I am a fast learner and have the ability to work under pressure. Please feel free to contact me for more informations and please don't offer any payment or work outside of Upwork. Thanks

I architect AI automation systems for B2B SaaS companies. Stack: Apollo, GoHighLevel, HubSpot, n8n, Make, Airtable, Claude API. I don't connect apps. I build error-logged, scalable, operational backbones — the kind that don't break at 2am on a Saturday and take your team down with them. Where I work: Most of my engagements fall into two lanes: 1. Operational automation for SaaS platforms. Make and n8n architecture for companies routing customer data, billing events, capsule production, lead intake, and reporting. Airtable as the source of truth. Supabase, Stripe, ElevenLabs, HeyGen, Vimeo as the integrated stack. Recent: 12-scenario operational backbone for a healthcare coaching platform — full Stripe-to-enrollment-to-reporting pipeline, zero manual touch. 2. HubSpot RevOps for AI-forward teams. HubSpot CRM and Marketing Hub configurations wired into AI workflows — lead scoring, automated outreach sequences, pipeline reporting, attribution. Certified through Integrating With HubSpot I: Foundations. What I bring: Six-figure operational systems delivered async. No client calls — async-only via Loom and DM. The work moves faster, the documentation is sharper, and you get a recording of every architectural decision. My typical client engagement runs $5K–$15K fixed price across 3–5 milestones. What I don't do: One-off Zapier wiring. Generic "build me a chatbot" jobs without architecture context. Sub-$1,000 fixed-price work. I'm the architect for systems that need to run unattended, not the implementer for ad-hoc tasks. Recent work: 12-scenario Make + Airtable platform for a B2B healthcare coaching platform — Stripe checkout to enrollment to capsule production, fully automated. Custom AI capsule production pipeline integrating ElevenLabs, HeyGen, Claude API, and Vimeo. Multi-stage HubSpot RevOps wiring for AI-forward outreach (in flight). How to work with me: First conversation is async — share the build context, I'll send back a Loom with my read on architecture, scope, and next steps. We move from there. — Roshawn Franklin Slight Edge AI

I solve hard backend and AI problems and take them all the way to production. I have 20 years of C/C++ experience, 15 years of Python, and a track record spanning real-time systems, LLM pipelines, embedded software, distributed trading, and full-stack products. • AI workflows, LLM pipelines, RAG, Python/FastAPI backends, and React • Performance-critical systems in C/C++, embedded C, distributed services, and cryptography • End-to-end ownership: research, architecture, implementation, deployment, Stripe, and technical-debt cleanup I’ve led the algorithms behind real-time tracking for half the world’s buses, built a trading system that ranked #1 globally for its strategy’s speed, and delivered AI and backend work for YC companies. If the problem is unusual, complex, or difficult to debug, I can help.