Hire the Best JSP Developers
in Germany

I help founders and software teams turn messy technical/product situations into clear execution: architecture, delivery, technical risk, team coordination, and reliable SaaS/backend/AI platforms. I’m not a “just give me tickets” developer. My strongest work is when a product needs someone who can understand the business workflow, challenge weak assumptions, design the architecture, coordinate developers, and still go deep enough technically to build or review the critical parts. Recent work includes: - Leading backend/platform work for an industrial AI/vision SaaS product using Java/Spring Boot, AWS event-driven services, Python/FastAPI, Claude/Anthropic, MCP tool integrations, secure auth, streaming UX, and production observability. - Building a multi-tenant RAG/chatbot SaaS on Google Cloud with FastAPI, NestJS, Next.js, Firebase Auth, Cloud Run, PostgreSQL, Cloud Storage, Vertex AI embeddings/search, strict tenant isolation, and SSE streaming. - Working in a fractional CTO-style consulting role: codebase audits, technical risk assessment, engineering standards, delivery process, roadmap/scoping, vendor/team coordination, and executive-ready recommendations. Typical areas where I help: - SaaS architecture and technical leadership - AI/RAG/LLM features that need to work in production, not just demos - Backend/cloud platforms on AWS or GCP - Multi-tenant systems, auth, data isolation, and workflow design - Turning vague requirements into clear technical execution - Reviewing existing codebases and identifying what to fix first - Leading or mentoring developers while keeping delivery moving - Communicating technical risks clearly to founders and non-technical stakeholders Core stack: Java/Spring Boot, Python/FastAPI, TypeScript/Node/NestJS, React/Next.js, AWS, GCP, PostgreSQL, Kubernetes, Terraform, event-driven systems, Claude/Anthropic, MCP, RAG, Vertex AI. Languages: fluent English, German, and Spanish. I’m open to focused part-time advisory work as well as larger long-term engagements when the project is serious, the scope is clear, and the collaboration is built around outcomes rather than busywork.

Dear Sir or Madam, My name is Oleksandr Prognimak. I have been working as a software developer for 33 years. I have extensive and longstanding experience in the following programming languages, frameworks, libraries, and technologies. Currently, my main focus is on the following IT areas: Java, JEE, Spring, Spring Boot, Angular, HTML5, JavaScript, TypeScript, CSS, SQL, PL/SQL, Docker, JUnit, Mockito, WireMock, Pact io, Maven, Oracle, PostgreSQL, and Azure Cloud. Here is the complete list of my skills: Skills, consulting, and development as a freelancer in the following areas: - Java: JDK 1.1 - 21, JSE, Swing, AWT - JEE: J2EE, JEE5,6,7,8,10 (Servlet, CDI, EJB, JPA, JMX, JMS, JSF) - Spring/Spring Boot: Spring Core, Spring Boot, Spring Test, Spring Data, Spring Integration, Spring Batch, Microservices - Cloud: Azure, AWS - Web Development/UI: Angular 4,7,10,16; Vue.js 2,3; TypeScript, GWT, Vaadin, JSP, JSF (RichFaces, PrimeFaces), HTML4, HTML5, JavaScript, JQuery, AJAX, Struts, Spring MVC - Web Services: SOAP, SOA, RESTful, Rest-API, OpenAPI, Swagger, RestEasy, Jersey, JSE HttpClient - ORM: Hibernate, EclipseLink, Apache OpenJPA - RDBMS/SQL: Oracle, Postgres, MySQL, MS-SQL, SQL, PL/SQL, MS Access, Teradata, H2 - App. Server/Servlet Container: Apache HTTP, Apache Tomcat, JBoss, Wildfly, Websphere, OC4J - XML Processing: AXIS-2, XPath, XSLT, XML Schemas, JAXP, JAXB - Build Tools: ANT, Maven, Gradle, Mojo - Source Code Management: GIT, GitLab, GitHub, Bitbucket, SVN, CVS - Case Tools/UML: Magic Draw, Software Architect, Together, ERWin, RationalRose - Report Tools: Jasper Report, BIRT Reports, Oracle Forms and Reports, Eclipse BI-Reports - Security: Java Security, JSSE, PKI, Websecurity, X509 - Test Tools/Testing: JUnit, TestNG, Cucumber, JBehave, Mockito, WireMock, EasyMock, Spring Test, Pact io, LoadTest, IntegrationTest, CI - MS-Office: VB, VBA, Excel-VBA, Access-VBA - Container Virtualization: Docker, Docker-Compose, Swarm, Kubernetes (K8) - Big Data: Apache Kafka, Zookeeper - Very Old Skills: C, C++, Basic, Pascal I am available immediately. Best regards, Oleksandr Prognimak

🚀 Zoho One Consultant & Developer | CRM, Automation, AI Systems 🏆 Official Zoho Partner Most businesses don’t have a tool problem. They have a system problem. That’s where I come in. I design and implement structured, scalable business systems with Zoho One. Not just setups, but connected processes across sales, operations, finance, and delivery. 🛠️ What I do: 🔹 Zoho CRM pipelines, automation, reporting 🔹 Zoho Books & Inventory for quotes, invoices, finance flows 🔹 Zoho Projects for structured delivery and tracking 🔹 Zoho Sign for contracts and approvals 🔹 End-to-end automation with Deluge & Zoho Flow 🔹 AI automation to reduce manual work 🔹 Custom apps with Zoho Creator when needed ⚙️ How I work: Start with clarity, not tools. 🔹 Workshop with visual business process mapping 🔹 Identify bottlenecks and manual work 🔹 Design a clean system before building 🤝 Act as a sparring partner, not just a developer: Think deep in business processes Challenge existing workflows Show multiple solution paths with clear trade-offs 🧩 Build close to Zoho standards: Stable Maintainable Future-proof 🏆 Background: ✅ Official Zoho Partner 🌍 Zoho DACH 2025 & Zoho Benelux 2025 📊 90%+ projects on Zoho One 🇪🇺 SMEs across Europe (DACH focus) 🧠 Business analysis + system architecture mindset 🌐 German, English, Turkish 📈 Results: ✔️ Less manual work ✔️ Clear, usable systems ✔️ Connected tools instead of chaos ✔️ Faster operations with fewer errors If a clean, scalable Zoho One setup is the goal, this is exactly where I can help. 🔍 Keywords: Zoho One, Zoho CRM, Zoho Books, Zoho Projects, Zoho Creator, Zoho Flow, Deluge, Zoho Automation, CRM Automation, Business Process Automation, Workflow Automation, AI Automation, Zoho Consultant, Zoho Developer, Zoho Implementation, Zoho Integration

I am a Senior Software Engineer with 10+ years of experience. I have solutions for different applications and the best tools ever to execute any given task. I believe in myself and have a positive attitude. I am a very quick learner who has a good understanding of fundamentals / foundation concepts.Able to pick up newer frameworks / technologies by incremental learning.I have skills in building Java-based web-applications using but not limited to the following technologies: - AWS - SAP Hybris - Core Java - JavaEE (Servlet, JSP, JSTL, JDBC, JPA) - Spring Framework (Spring MVC, Spring Security, Boot) - Hibernate - JavaScript (Ajax, jQuery, AngularJS) - REST, SOAP - JUnit, Integration tests - Maven, Ant - Git, SVN, CVS - Android APP Development - Google API - Flutter I also have had a good fortune to work on Android APP Development and Google api in which I have a great desire to extend my skills and knowledge to any project that is related to the same. In addition, Leadership: At most two years of development team (from 3 to 6 person) leadership and technical account management. Problem-solving: Ability to recognize and define problems, invents and implements solutions, track and evaluates results. Creative thinking: New approaches to problem-solving, organizational design, and product development all spring from the individual capacity for creative thinking.