Hire the Best Serverless Developers in Tallinn, EE

AI has changed how fast we can write code, but it hasn't changed the laws of software engineering. An LLM can generate a script, but it takes a senior architect to build a secure, scalable, and deterministic product. With 20 years of full-stack engineering experience and $400k+ in successful Upwork deliveries, I bridge the gap between experimental AI and production-ready software. I don't just use AI coding tools (Claude Code, Cursor, etc.) to ship features 5x faster - I literally build the open-source infrastructure that orchestrates them (see ProPR below). Whether you need to untangle a hallucinating chatbot, architect a multi-tenant WhatsApp AI platform, or build a complex SaaS from the ground up, I bring product judgment and systems-thinking to the table. I build AI systems that operate on constraints and verified data, not just "vibes." WHAT I DO: 🧠 Agentic AI & Conversational Systems I build AI systems that actually do things. • Custom Chatbot Platforms: Built SaaS builders for WhatsApp, automated customer support pipelines, and specialized AI personas. • Multi-Agent Orchestration, tool calling, multi-step reasoning, and human-in-the-loop handoffs. • Advanced RAG (Retrieval-Augmented Generation) and vector database integration. • Integrating Claude, OpenAI, and open-weight models via APIs and MCP (Model Context Protocol). ⚡ AI-Accelerated Full-Stack & Infrastructure I work hands-on in the codebase daily leveraging AI to ship robust applications at startup speed. • Modern Stack: TypeScript, Next.js, Node.js, Python (FastAPI). • Edge & Cloud: Heavy use of Cloudflare (Workers, D1, R2) for blisteringly fast, low-cost deployments. • Payments & APIs: Seamless integrations with Stripe, Polar, and complex SaaS billing models. • Data & Auth: PostgreSQL, Supabase, Redis. 🛠 AI System Diagnostics & DevOps Is your current AI app slow, generic, or constantly hallucinating? I conduct diagnostic sprints to fix prompt architectures, optimize RAG retrieval, and bring reliability back to your product. I also leverage AI for rapid DevOps—triaging production issues and automating server management to keep downtime near zero. RECENT HIGHLIGHTS: 🚀 Creator of ProPR (propr.dev): Architected and launched an open-source orchestration platform that turns AI agents into PR-producing engineers. Built a complex CI/CD pipeline for AI utilizing isolated Docker workspaces and deterministic Git handling. Proven at scale: used internally for over a year to autonomously write and merge over 2500 pull requests. 🚀 Conversational AI SaaS: Developed a comprehensive WhatsApp chatbot builder platform, intelligent customer support agents, and viral AI personas (including specialized coding agent parodies). 🚀 High-Volume Fintech/Mobile: Led development for a suite of financial trading applications achieving over 10M+ combined downloads, ensuring high-concurrency safety and strict ledger integrity. HOW I WORK: I am a builder, not just an advisor. I scope the architecture, write the code, verify the agent outputs, and own the production launch. If you need a senior technical partner who treats code as a liability and optimizes for speed-to-market, let's talk.

I’m a Fullstack Developer with 15+ years of experience building scalable backend systems and modern frontend applications. My recent work includes launching a serverless IoT connectivity platform on AWS, which is already scaling reliably at a very moderate cost. I specialize in TypeScript, NestJS, GraphQL/REST APIs, TypeORM, Docker/Kubernetes, and AWS, combined with React + TypeScript on the frontend. I also set up GitOps pipelines and CI/CD workflows so teams can ship confidently and often - and I put strong emphasis on testing (unit, integration, E2E, and visual regression) to make sure nothing breaks as projects grow. More recently, I’ve been designing workflows that integrate agentic AI into development and business processes - helping teams move faster by letting AI handle repetitive or complex tasks under structured, reliable automation. If you need someone who can own a system end-to-end - from architecture and code to deployment pipelines and AI-assisted workflows - I’d be glad to help.

I’m a senior full-stack developer working at the intersection of code, product, and strategy. I help businesses of all sizes turn ideas into scalable, stable, and smart software — whether it’s a customer-facing platform, internal tool, or AI-enhanced system. I don’t just deliver features - I think through the product, architecture, and long-term maintainability. My goal is to make sure the solution fits the business, performs reliably, and evolves with it. I work across the stack — frontend, backend, infrastructure, integrations — and adapt the tech to the task, not the other way around. From MVPs to production-grade platforms, I care about doing things right. Have an idea? Let’s talk. I’ll help you define the smartest way to bring it to life - with clean execution and real results. 𝗧𝗲𝗰𝗵 𝗦𝘁𝗮𝗰𝗸: 🔹 Frontend: React.js, Vue.js, TypeScript 🔹 Backend: Node.js, Python (Django), PHP (Laravel, Symfony), WebSockets, REST / GraphQL APIs 🔹 Mobile: React Native, Kotlin (Android), Swift (iOS) 🔹 DevOps & Infrastructure: Docker, CI/CD, AWS, Google Cloud, Cloudflare Workers & R2 🔹 Database: PostgreSQL, MySQL, SQLite, Firebase Realtime DB / Firestore 🔹 Design & Product: Product Design, SaaS UI/UX Systems, Web & Mobile Prototyping, Graphic Design, Brand Identity, Design Systems in Figma 𝗦𝗲𝗿𝘃𝗶𝗰𝗲𝘀: 🔹 Web & Backend Development: SaaS platforms, admin panels, APIs, and real-time business logic 🔹 Mobile Development: Cross-platform and native apps with deep integrations and push notifications 🔹 UI/UX Design: Flows, wireframes, product UI, and full design systems in Figma 🔹 DevOps & Infra: Docker, CI/CD, Cloudflare Workers, AWS/GCP, scalable cloud architecture 🔹 AI Integration: GPT, Whisper, LangChain, semantic search, and custom AI workflows 🔹 Tech Consulting: Architecture, stack planning, audits, and CTO-level product support 🔹 MVP & POC: From idea to production-ready MVP with lean, iterative development 𝗜𝗻𝗱𝘂𝘀𝘁𝗿𝗶𝗲𝘀: 🔹 Fintech & Payments 🔹 Health & Wellness 🔹 Logistics & Transportation 🔹 FoodTech & Restaurant Management 🔹 E-commerce & Retail 🔹 Education & EdTech 🔹 Social & Community Platforms 🔹 SaaS & B2B Tools 🔹 and more -------------------------------------- 𝗖𝗹𝗶𝗲𝗻𝘁𝘀 Feedback? "A very responsible developer: always dives into the task and suggests the best solution, not just doing things ‘as told. Everything is stable, stress-free, with great communication, and always available when needed.” “The experience shows right away - everything is done quickly, with quality, and with foresight so that nothing needs to be redone later.“ Project on your mind? Let’s talk-reach out or book a consultation! 𝐊𝐞𝐲𝐰𝐨𝐫𝐝𝐬: React React.js Vue.js Next.js TypeScript JavaScript TailwindCSS Zustand Redux FramerMotion Node.js Express.js NestJS FastAPI Django Laravel Symfony REST APIs GraphQL WebSockets PostgreSQL MySQL SQLite Firebase Firestore Docker CI/CD GitHubActions BitbucketPipelines AWS GoogleCloud CloudflareWorkers Vercel Serverless Architecture Cross-Platform Development ReactNative Expo Kotlin Swift Mobile App Development iOS App Android App PushNotifications DeepLinking AppStore Deployment OpenAI Whisper LangChain GPT Integration SemanticSearch Embeddings AI Analytics UIUX Design Figma Wireframes Prototyping SaaS Dashboard Design Product Design DesignSystems MVP Development FullStack Developer Senior Mobile Developer ReactNative Expert SaaS Developer AI Integration Specialist ScalableApp Architecture CTO-as-a-Service Agile Delivery Real-time Apps Logistics Platforms RestaurantApps Custom CRM Admin Panels EdTech Tools Social Platforms Fintech Solutions -------------------------------------- I’m a senior full-stack developer with a strong focus on architecture, product thinking, and delivering stable, production-ready software. I work with React.js, Vue.js, Node.js - building full end-to-end solutions from frontend to backend. I specialize in designing scalable systems that are easy to maintain and evolve. Whether it’s admin panels, SaaS platforms, APIs or custom workflows, I make sure the technical foundation supports long-term growth and flexibility. For deployment, I’m comfortable working with VDS setups, Docker environments, and cloud-based solutions like Cloudflare Workers, Railway, and Render - choosing what’s best for the project’s speed and reliability. As an independent full-stack engineer, I bring deep technical expertise, confident decision-making, and a clear product-oriented mindset. I care about clean code, smooth delivery, and helping businesses turn ideas into real working software.

I'm a senior Aussie developer living in Europe. - 9000+ hours on upwork - 100% success rating top rated plus My skill set is as follows. 💎 Backend skills: ✔✔✔ PHP 7.x ✔✔✔NodeJS ✔✔✔Laravel Framework (5.x) ✔✔✔ NestJS ✔✔✔ Prisma ORM ✔✔✔ Graphql subscription, graphql-codegen, type-graphql ✔✔ CQRS ✔✔ AdonisJS ✔✔✔ Composer ✔✔✔Advanced architectural design patterns 🖼 Frontend: ✔✔✔React ✔✔✔VueJS ✔✔✔ Vuex ✔✔✔ Material UI ✔✔✔ Vuetify ✔✔✔ Quasar ✔✔✔ Redux, Saga, Observables, Thunk ✔✔ AngularJS (1.x, 4+) ✔✔✔ RXJS ✔✔✔ WebpackJS, GruntJS/Gulp ✔✔✔ GraphQL , GraphQL subscriptions, cache, link state 📁 Databases: ✔✔✔ Mysql ✔✔✔Postgres ✔✔ Cassandra ✔✔ MongoDB 🗄Caching: ✔✔✔ Redis with clusters ✔✔memcache 📊 Streaming: ✔✔✔ Websockets ✔✔✔ socket.io + Pusher + PubNub ✔✔✔ Redis Pub/Sub ⌛ Dev-ops: ✔✔✔ Kubernetes ✔✔✔ K8s Secrets / Namespaces ✔✔✔ Helm charts ✔✔✔ Linux/Apache/Nginx/Varnish Cache ✔✔✔ Jenkins / Bamboo CI / Buddy ✔✔✔ Docker and VirtualBox ✔✔✔ AWS / s3 / Route 53 / ECS / EC2 / ECR / EKS / GCP / Azure / Amplify ✔✔✔ AWS Serverless ✔✔✔ Testing: Cypress, PHPUnit, Jest, Mocha, Chai ✔✔✔ E2E/BDD/TDD Unit Testing / Protractor / Selenium ✔✔✔ Kubernetes Secrets management AI: ✔✔✔ Knowledge of OpenAI endpoints ✔✔✔ Api integration with eleven labs voice platform ✔✔✔ Langchain / AutoGPT / SQLAgent I have over 16+ years worth of commercial software development experience and my primary languages are PHP and typescript. I have developed solutions which suit people who want to develop cloud based SaaS to market. 🧱 API Development: ✔✔✔Twilio ✔✔✔ Docusign API ✔✔✔ Tesseract ✔✔✔PyTesseract ✔✔✔Backtrader ✔✔✔ OpenCV ✔✔✔ Pyfolio ✔✔✔ OpenGL ✔✔ Tensorflow ✔✔✔Stripe ✔BrainTree ✔✔✔Pusher 🧿 Version Control: ✔✔✔ GIT ✔✔✔ Git Hooks ✔✔✔ Git auto-deploy

Drawing on 18+ years of experience in diverse technologies (including Amazon Web Service), I deliver innovative, well-architected cloud-based solutions for challenging environments. As a certified AWS Solutions Architect (Professional and Associate) with AWS Security Specialty, I design, build, and optimize scalable, secure, and cost-effective architectures. Highlights: ✅ 18 years in IT; 12 years as CEO, Founder, and AWS Solutions Architect ✅ Successfully led 50+ projects for 20+ clients across industries ✅ Specialized in cloud migrations, serverless architectures, and cost optimization ✅ Certified AWS Solutions Architect (Professional & Associate) and AWS Security Specialty → Key Expertise: Cloud Architecture & DevOps ✓ Extensive experience designing serverless platforms (e.g., VOD systems, Tibica optimizations, Infoplay CMS). ✓ Proficient in IaC tools like AWS CloudFormation and Terraform for infrastructure automation. ✓ Expertise in securing systems with AWS IAM, Cognito, and Keycloak. AWS Solutions & Services: ✓ Core: AWS Lambda, API Gateway, DynamoDB, S3, CloudFront, MediaConvert, Glue ✓ Analytics: AWS EMR, Kinesis Streams, SageMaker, Athena ✓ Security: AWS Security Hub, GuardDuty, Keycloak ✓ Deployment & Optimization: AWS CodePipeline, Docker, Kubernetes, Helm Programming & Frameworks: ✓ Languages: NodeJS, Python, JavaScript ✓ Frameworks: ReactJS, VueJS, Redux, Vuetify Industries Served: → Healthcare, Mortgage, Medicine, Insurance, Retail, Advertising, Media, Security Main skills: ✓ Skilled in planning and executing cloud migrations (e.g., Docker to AWS Serverless). ✓ Expertise in optimizing serverless architectures for performance and cost (e.g., Tibica optimizations). ✓ Proven track record of designing scalable, compliant solutions for diverse industries. ✓ In-depth knowledge of AWS Well-Architected Framework and service combinations like Lambda, DynamoDB, MediaConvert, and Glue. ✓ Ability to design end-to-end secure, scalable platforms tailored to client requirements. ✓ Expertise in designing and deploying serverless architectures (e.g., VOD platform, Infoplay CMS). ✓ Skilled in integrating AWS services like Lambda, API Gateway, and CloudFront for scalability and resilience. ✓ Proficient in cost optimization strategies, including reserved instances and pay-as-you-go models. ✓ Experience in securing systems with IAM, Cognito, and Keycloak. ✓ Hands-on knowledge in managing infrastructure with IaC tools like CloudFormation and CodePipeline. Case Studies Summary 1. Video on Demand (VOD) Platform for Roligt AB - Developed a serverless VOD platform with a super-admin panel, publishing platform, and secure video page. - Leveraged AWS services like MediaConvert, MediaPackage, Lambda, API Gateway, DynamoDB, and CloudFront. - Achieved scalability, cost efficiency, and GDPR compliance​​. 2. Custom Digital Signage System for Infoplay - Built a serverless content management system reducing costs by up to 80%. - Integrated AWS Lambda, API Gateway, S3, Cognito, DynamoDB, and MediaConvert for scalability and flexibility​. 3. Tibica Cloud Platform Optimization - Enhanced performance and reduced latency by optimizing serverless architectures. - Transitioned Tibica’s Lambda functions to ARM-based architecture for cost savings and better efficiency​. 4. Docker to AWS Serverless Migration - Migrated Docker applications to AWS Serverless architecture using Lambda, resulting in up to 40% cost savings and auto-scaling capabilities​. 5. AWS Cost Optimization - Conducted a Well-Architected Framework Review to align cloud operations with best practices. - Identified cost-saving opportunities like rightsizing and reserved instances​. 6. Secure SSO Solution - Built a custom SSO solution using Keycloak and AWS services like EC2, RDS, and Cognito, achieving extensive customization and significant cost reduction compared to alternatives like Okta​. 7. MVP Development - Created scalable and secure MVPs on AWS using Lambda, API Gateway, Glue, and other serverless technologies. - Optimized for rapid iteration, security, and cost-efficiency​​.

𝗔𝘃𝗮𝗶𝗹𝗮𝗯𝗹𝗲 𝗻𝗼𝘄: I’m a seasoned full-stack developer with 9 years work experience and a diverse background in various industries. I prioritize intuitive interfaces and thoughtful interactions in my development process and strive to ship software that users will love. 𝗞𝗲𝘆 𝘀𝗸𝗶𝗹𝗹𝘀 Python: FastAPI · Pydantic · SQLAlchemy · Celery · Flask Frontend: TypeScript · React · Svelte · Sass · PostCSS · Node.js · Bun Cloud: AWS Lambda · SQS · Serverless · AWS CDK · Pulumi ETL: Airbyte · Apache Airflow · Bonomo · ClickHouse CI/CD: GitLab CI · GitHub Actions · CircleCI I love exploring different technologies so if your stack is different that shouldn't be a problem!