Hire the Best Java Developers
in Estonia

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Yevhen K.

Tallinn, Estonia

$50/hr
5.0
12 jobs

💻 Abobe Certified Expert with almost 10 years of hands-on experience. Custom components, OSGI Services, Content migration, AEM version migrations, Troubleshooting, Workflows, Events, Jobs, AEM as a Cloud Service, Edge Delivery Services, and integrations. 👨‍💼 With over 10 years of valuable experience and 2 Adobe Certified Expert certifications, I have collaborated with 10 distinguished companies across 7 diverse industries, including Automotive, Government, E-commerce, Pharma, Logistics, HealthCare, and Events. 🌟 14 noteworthy projects include contributions to BMW, Whirlpool, Kitchenaid, Maytag, Amana, DHL, Canadian Tire, Reed Exhibitions, Agillic, The National Lottery, Novo Nordisk, Helios, AIDA Cruises, and Sonova. 👨‍🔧 I can't imagine a task that I haven't handled before! 📝 To get more info about my experience, please check my Employment History. I'm looking forward to getting in touch with you and contributing effectively to your project. I hope these changes help! Let me know if you need anything else. 🔑 𝐊𝐞𝐲𝐰𝐨𝐫𝐝𝐬 🔑 AEM Consultations | Full cycle development | Adobe Experience Manager | AEM Full Stack | Java | AEM Services | Adobe Developer | Cloud | AI | MVP | Frontend | React | Vue | Angular | Next.js | Wix | Bubble | Shopify | CMS | Adobe Expert | DevOps | Support

  • Java
  • Web Development
  • CMS Development
  • Adobe Experience Manager
  • CMS Framework
  • CSS
  • HTML
  • React
  • Cloud Architecture
  • Web Design
  • UX & UI
  • Figma
  • Adobe Target
  • Adobe Analytics
  • Adobe Edge
Eugene O.

Tallinn, Estonia

$30/hr
4.9
48 jobs

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​​.

  • DevOps
  • Amazon EC2
  • AWS Lambda
  • Docker
  • Python
  • Amazon S3
  • Kubernetes
  • API Integration
  • Cloud Architecture
  • Serverless Computing
  • AWS CloudFormation
  • Cloud Migration
  • Web Application Development
  • Amazon Web Services
  • Node.js
  • PostgreSQL
  • AI Agent Development
  • React
  • CI/CD
  • Terraform
Andrey S.

Tallinn, Estonia

$35/hr
4.9
26 jobs

✅ Full Stack Developer React Node ✅ Full Stack AI SaaS Developer ✅ Node.js developer 💪 Successfully Delivered 125+ Projects: 📦 35+ SaaS Platform Developer tasks | 🛒 40+ eCommerce Marketplaces | 📱 25+ Mobile Apps | 🏢 20+ AI Chatbot Development 🧠 15+ Years as Full Stack Developer React Node | Full Stack AI SaaS Developer | React Native developer | React developer | Node.js developer | Mobile App developer 👌 Certified SaaS Platform Developer My work focuses on business outcomes: shipping MVPs in 6-8 weeks, improving platform performance by 30-45%, reducing manual operations by 40-60% and building systems ready for growth across Full Stack Saas developer solutions, eCommerce, CRM, mobile app development and AI products. As a Full Stack AI SaaS Developer, I build high-performance systems. Whether you need a Full Stack Developer React Node or a dedicated SaaS Platform Developer, I deliver custom architecture tailored to your goals. 📦 Services Include: ✔️ Scalable Web Apps & AI SaaS Platforms | Full Stack developer saas Solutions ✔️ Modern UI UX Design & Product Design | Front-End Development, Back-End Development & QA ✔️ cms developer | mobile app design, Web Design & mobile friendly website solutions for any real estate platform Innovative and goal-oriented cto at Malevich Company with 15+ years of experience. I work with: ⚡ AI-Driven Development Speed & Automation: ✔️ Proven mastery of Cursor, Codex and Claude Code, leveraging Claude for advanced AI Automation workflows. ✔️ Deep integration of Claude Code into internal CI/CD processes to achieve maximum shipping velocity. ✔️ Solid experience in prompt engineering, Chatbot systems, building AI Agents, and executing AI Model Integration. ✔️ Strong testing, refactoring, and code review abilities — strictly enforcing Software Design quality in Claude Code generated environments. ⚙️ Core Languages: JavaScript, TypeScript, Python, PHP, Java ⚙️ Front-End Development Framework & Libraries: React, React.js, Next.js, Redux, HTML, HTML5, CSS, CSS 3, Canvas, jQuery, Angular, Vue.js, Front-End Development Framework layouts ⚙️ Back-End Development Framework Platforms: Node.js, NestJS, NestJS developer workflows, NodeJS Framework, ExpressJS, WordPress, Back-End Development Framework systems ⚙️ Mobile Ecosystems: Flutter, Android App Development, iOS, Android ⚙️ Design & Interface: UX & UI, Figma, Responsive Design, Adaptive Web Design, Tailwind CSS, MUI, Bootstrap, shadcn/ui, SCSS, SASS, LESS ⚙️ API Integration & Services: API Development, REST API, RESTful API, GraphQL API, Webhooks, OpenAI API, Claude API, Stripe API, Twilio API, User Authentication, Paypal, Liqpay ⚙️ Database Design & Storage: Database, Database Architecture, PostgreSQL, MySQL, MongoDB, Firebase, SQL ⚙️ Cloud & Infrastructure: Amazon Web Services, AWS S3, AWS Lambda, Google Cloud Platform, Microsoft Azure, Vercel, DigitalOcean, Docker, Kubernetes ⚙️ DevOps & Quality: CI/CD, Testing (Jest, Playwright), Monitoring (Sentry), Logging, Git, GitHub ⚙️ Web3: Ethereum, NFT, Smart Contracts, Web3.js, Solidity 𝗜 𝘄𝗶𝗹𝗹 𝗱𝗲𝘃𝗲𝗹𝗼𝗽 a custom CRM and Custom Website to satisfy all your specific business needs, excluding generic systems. As an experienced Full Stack Saas developer and Full Stack developer saas specialist, I eliminate technical debt and ensure rapid scaling. Here is how I work as a Full Stack node.js react developer and Node.js backend developer: ✔️ javascript developer & Python developer managing node.js next.js and node.js graphql on supabase ✔️ MERN Stack developer, Frontend React developer, Front End developer React and WordPress developer ✔️ flutter developer, app developer and software developer solutions ✔️ linux system administrator workflows and full stack developer laravel Vue engineering ✔️ As a Backend developer and Full Stack Web developer, I ensure clean architecture. Industries: HoReCa | Food & Beverage | Hospitality | Tourism | Health & Wellness | FinTech | Finance & Accounting (automation for accountant, cfo, bookkeeper, hr generalist) | Education | E-learning | Retail | Consumer Goods (apps for personal stylist) | HR | Business Services | Real Estate | Fashion | Beauty | HVAC | Media & Entertainment | AI | Ed-Tech I’m an experienced Full Stack Web developer focused on Next.js. As a Senior Full Stack AI SaaS developer, I build systems using Full Stack node.js react developer architecture, scalable Backend developer code and AI integrations. I also optimize saas marketing, direct UX Designer workflows, handle cross-team communications, and refactor legacy Ruby on rails apps. 👉 Available for long-term collaboration. Click the invite button and let's discuss your project.

  • Node.js
  • React
  • CSS 3
  • HTML5
  • Web Application
  • HTML
  • MySQL
  • Full-Stack Development
  • React Native
  • CSS
  • Python
  • WordPress
  • PHP
  • Git
  • jQuery
  • SaaS
  • API Integration
  • JavaScript
  • API
  • Claude
Md Samiul Alim S.

Tallinn, Estonia

$70/hr
4.6
50 jobs

I’m a Senior Backend Engineer and Software Architect with 9+ years of experience building systems that don’t just work but scale, evolve, and stay maintainable over time. I focus on designing and delivering high-performance, reliable backend systems from early-stage concepts to production systems handling real-world complexity. My work spans microservices architecture, event-driven systems, real-time applications, and modern data platforms (including vector databases). I help teams move from "it works" to systems that are clear, stable, and ready to grow. Over the years, I’ve built and maintained platforms across: - Messaging - Audio & Video Streaming - Ride-sharing - eCommerce - FinTech - EdTech - IoT - Blockchain - Enterprise SaaS often operating at scale, with complex workflows and millions of users. What I bring • Strong backend architecture, systems that are easy to reason about and extend • Deep experience in microservices and event-driven design (Kafka, Temporal, Debezium) • Real-time systems expertise, messaging, streaming, live data pipelines • End-to-end ownership, from system design to production deployment • A focus on clarity, not just code, but how everything fits together Tech I work with - Java (Spring Boot), Golang (Fiber), Python (FastAPI) - PostgreSQL, Redis, MongoDB, ElasticSearch, Cassandra, Weaviate - Kafka, RabbitMQ, Temporal, Airflow - Docker, Kubernetes, AWS (plus real-time protocols like WebRTC, MQTT, XMPP when needed) If your system is growing in complexity, slowing down, or becoming harder to evolve that’s usually where I can help the most. Let’s build something that lasts.

  • Java
  • Software Architecture & Design
  • Spring Boot
  • RESTful API
  • GraphQL
  • PostgreSQL
  • Kubernetes
  • Golang
  • MQTT
  • Docker
  • Distributed Computing
  • Apache Kafka
  • RabbitMQ
  • API
  • Vector Database
Aleksandr N.

Tallinn, Estonia

$50/hr
5.0
45 jobs

Google Cloud Certified Architect Google Cloud Certified Developer Experienced Java Engineer with 10+ years of experience, more than 10000 UpWork hours and official UpWork Top Developer certificate. I specialise in large scale, high availability enterprise applications development (Web and Desktop), extensive knowledge of Spring stack and different Spring API-s, development of Spring-boot based microservice architecture, experience with different AWS API-s and AWS infrastructure setup. Complete full stack development of web applications from front-end to backend and production ready deployment to AWS. - Java Web & Desktop applications. - Spring Stack - Spring MVC, Spring Boot, Spring Security, Spring integration. - REST APIs integration, design and development. - Front End Development - React/Angular - Databases/ORM - MySQL, PostgreSQL, Spring Data/JPA/Hibernate. - ElasticSearch - AWS, Google Cloud - Google Cloud Certified Developer - Messaging - Kafka, JMS, ActiveMQ, and SQS and Google Cloud Pub/Sub Also interested in math, finance, quantitive analysis, complex algorithm design, competitive programming and computer security. Completed coursera courses : Cloud Engineering with Google Cloud (full professional certificate) Google Kubernetes Engine Parallel Programming in Java Algorithms I, II. Programming Languages Computer Networks Algorithms, Design and Analysis Software Security

  • Java
  • Spring Boot
  • Spring Framework
  • AngularJS
  • JavaScript
  • iOS Development
  • HTML
  • Twitter/X Bootstrap
  • Play Framework
  • Microservice
  • CSS
Deniss J.

Narva, Estonia

$50/hr
5.0
25 jobs

I am a Java software developer with 4+ years of experience behind. I focus mainly on backend tasks which include service infrastructure and API development. Most of my clients are small to medium companies who need robust solutions in a reasonable amount of time. Having a business administration experience I'm able to contribute to project from technical and from business points. I love to expand the domain of my knowledge and work experience in any field. List of expertise areas: - Java: Spring Boot, Dropwizard - MySQL, PostgreSQL, Mongo - JPA, Hibernate - JUnit, JMockit - Database design - REST APIs integration, design and development - AWS, Docker, Ubuntu - ReactJS - PHP Laravel

  • Java
  • Spring Framework
  • MySQL
  • Laravel
  • Database Design
  • PHP
  • API Development
  • JavaScript

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