Hire the Best Terraform 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.

I design, secure, and operate production-grade Kubernetes and cloud platforms used by real companies at scale, with a strong focus on security, reliability, and automation. With 12+ years of hands-on experience, I help companies build secure, scalable, and observable infrastructure across both cloud and bare-metal environments. My expertise is not based only on certifications, but on real enterprise experience operating critical systems under real production pressure. I have worked as a Senior SRE / Platform Engineer at companies such as Thryve, Getir, HelloFresh, Westwing, and Sony, where I was responsible for Kubernetes platforms, cloud architecture, CI/CD, observability, and security hardening. What I bring to your project is not “DevOps scripting”, but true production-grade platform engineering and the best practices used in large-scale enterprise environments. Most clients come to me after their Kubernetes or cloud setup becomes unmanageable, insecure, or overly complex. I help turn those environments into clean, secure, and maintainable platforms. ⸻ Core Expertise • Kubernetes cluster design, hardening, and operations (CKA / CKS level) • Multi-cloud architecture across AWS, GCP, Open Telekom Cloud, OpenStack, and hybrid environments • AWS cloud architecture (networking, IAM, security, cost optimization) • GitOps with ArgoCD / Flux, CI/CD pipelines, and automation • Infrastructure as Code with Terraform, Ansible, CloudFormation, and CDK • Observability stacks: Prometheus, Loki, Tempo, OpenTelemetry • Container and image security: Trivy, Cosign, SBOM, distroless images • Network Policies, Pod Security Admission, runtime security, zero-trust concepts • Running stateful workloads (databases, HAProxy, storage) inside Kubernetes • Bare-metal and hybrid Kubernetes environments I also have a programming background in Go, Python, and PHP, which helps me understand application needs deeply and design infrastructure that truly fits the workload. ⸻ Certifications • AWS Certified Solutions Architect • CKA – Certified Kubernetes Administrator • CKS – Certified Kubernetes Security Specialist

⭐️ 8+ Years in Software Engineering (Golang, Python) ⭐️ Hands-on LLM/ChatGPT/RAG product development and large-scale ML hosting on AWS ECS/CDK ⭐️ Backend for global platforms serving 3M+ users/day ⭐️ CKAD, AWS Solutions Architect – Associate & AWS DevOps Engineer – Professional certified ⭐️ Strong background in microservices, cloud-native systems & real-time data pipelines ⭐️ Slack-JIRA AI assistant, Foodpanda homescreen infra, Amazon PDP localization pipeline ⭐️ High-impact Upwork client results with consistent 5.0 ratings 🧑‍💻 Back-End Engineering (Golang, Python) ☑️ REST, gRPC, GraphQL API design ☑️ Go frameworks: Gin, Echo, Revel, Martini, Gorilla ☑️ ORM: Gorm, go-pg | Testing: GoMega, Ginkgo, go-mock ☑️ Concurrency: goroutines, channels, worker pools ☑️ Dependency Injection: go-wire ☑️ Structured logging: zap, zerolog, logrus ☑️ GolangCI-lint contributor – deep attention to clean code and linting 🧑‍💻 Cloud & Infrastructure ☑️ AWS: Lambda, ECS, RDS, DynamoDB, S3, API Gateway, Secrets Manager, CDK ☑️ GCP: Cloud Run (standalone & GKE), Firestore, Pub/Sub ☑️ Infrastructure as Code: Terraform, Ansible ☑️ Docker, Kubernetes (CKAD), Helm ☑️ CI/CD: GitHub Actions, Jenkins, Bitbucket Pipelines 🧑‍💻 Databases & Caching ☑️ PostgreSQL, MySQL, MongoDB, DynamoDB, Firestore ☑️ Redis, Memcached, Key-vault ☑️ Neo4j (graph db), Elasticsearch (search & analytics) 🧑‍💻 DevOps, Observability, Streaming ☑️ RabbitMQ, Apache Kafka, Apache Schema Registry ☑️ Prometheus, Grafana, Datadog, AWS CloudWatch ☑️ Log pipelines: ELK (Elasticsearch, Logstash, Kibana), Filebeat 🛠 Blockchain & Decentralized Systems ☑️ Ethereum, Web3 API, ERC-20 Token Transfers ☑️ Cowswap DEX integration ☑️ Katzenpost Mixnet-based Ethereum transaction privacy router ☑️ Secure wallet interaction, order book access, token tracking 🧑‍💻 AI / GenAI / LLM Work ☑️ LangChain, ChatGPT, Retrieval-Augmented Generation (RAG) ☑️ Slack-JIRA LLM assistant (LangChain + Python + ChromaDB) ☑️ TruthWatch: Real-time YouTube AI content audit web app ☑️ Amazon-scale LLM hosting & PDP localization pipeline ☑️ Prompt engineering, LLM pipelines, context chaining

I'm an AI Engineer & Strategist (PhD in CS) who solves the #1 problem businesses face: 'We’ve spent 6 months building AI, but I still can't tell if it actually works.' Most businesses I work with are stuck with: • Features that look good but fail in production because they lack proprietary, robust logic. • Talented engineering teams who lack the specialized AI capabilities required to build auditable, verifiable systems. • Architecture that works for 10 users but will trigger massive security or cost liabilities when signing your first enterprise client. With 15+ years of experience and having architected 20+ high-stakes AI pipelines, I bridge the gap between complex AI research and agile, production-grade software engineering. I provide the senior technical expertise you need to eliminate repetitive workflows using production-grade, safe, and auditable AI automation and ensure your technology is an asset for your business or your next funding round. Recent work: • For a RegTech SaaS: Built a hybrid RAG pipeline with durable workflow orchestration (Temporal). Result: AI responses with 100% citation provenance for regulated document analysis. • For a wellness startup: Architected a 4-agent LLM coaching system with dynamic 6-layer prompt assembly and emotional intensity mapping. • For a cross-chain DEX: Engineered the backend for trustless atomic swaps between Bitcoin/Lightning and EVM/Starknet ecosystems. • Enterprise identity: Led the research and delivery of the KILT Protocol mainnet, including a Deloitte-partnered KYC integration. My pipelines consistently deliver: ✅ 40–80% reduction in manual work ✅ 99%+ accuracy, even in regulated environments ✅ Hours reclaimed per employee, per week ✅ Measurable ROI within 30–90 days How I help your business: ✅ AI strategy & advanced RAG: I provide the elite technical oversight your team needs to eliminate repetitive manual workflows, build safe AI systems, and ensure your technology is a major asset for your next funding round. ✅ Security and compliance: Deep expertise in building verifiable pipelines, secure cloud data flows, and SOC2-ready architectures. ✅ Engineering leadership: I work directly with your developers, streamline your sprint cycles, and implement CI/CD pipelines that ensure your team ships weekly, not monthly. ✅ Technical due diligence: I ensure your codebase and IP are fully optimized for institutional scrutiny during M&A or venture capital funding rounds. Technical expertise: • AI / LLMOps: Python, Pydantic AI, LangGraph, LangChain, PyTorch, Vector Databases, Graph-RAG, Semantic Search, Prompt Engineering, Model Evaluation, Fine-Tuning, Embeddings. • Backend & cloud infrastructure: TypeScript, SQL, Docker, Kubernetes, Terraform, AWS, Azure, GCP, Distributed Systems, CI/CD. • Automation & enterprise tech: n8n, Document Intelligence (Docling), LegalTech/FinTech compliance automation, Decentralized Identity (DID). I can quickly adapt to your stack and I am always happy to learn new tools. How we can work together: ✅ Technical audit and roadmap: We start with a deep dive into your current stack. I identify friction points in accuracy or scale and provide a written assessment with specific, technical recommendations. ✅ Fractional leadership: I join your Slack/Teams, manage the development cycle, and take ownership of the hard technical decisions so you can focus on growth. ✅ Specific sprints: Need a specific RAG pipeline or smart contract protocol built? I offer fixed-scope engagements for high-priority feature launches. Want to get started? Click the "Invite to Job" button. Tell me about your current stack and what would make our first call a success for you.

Mobile App Developer specializing in React Native & Flutter. I help startups build cross-platform iOS & Android apps – from validated MVP to App Store launch. Backed by a 330+ engineer full-cycle team with 20+ years of experience, I deliver mobile applications that go beyond clean UI – covering backend API, cloud infrastructure, QA, and AI integration in a single engagement. Whether you're a founder validating your first mobile idea or a product team scaling an existing app, I focus on one goal: shipping a product that users download, use, and come back to. 💡 Case Studies 🧠 BibleLytics (Wellness & AI, Startup) – Built a full AI-powered mobile MVP from discovery phase to App Store launch. The app guides users to Bible verses based on emotional state using vector search across 400+ mapped emotions and OpenAI GPT-powered prayer generation. Delivered cross-platform iOS + Android from a single Flutter codebase, plus a web admin dashboard and landing page. Stack: Flutter · GCP · OpenAI GPT · Vector Search · JavaScript Result: Budget-efficient cross-platform delivery · validated concept before development investment · scalable architecture ready for multi-version expansion. ⚖️ Legal Beagle (LegalTech SaaS, USA) – Developed a white-label legal services platform with a 12-person team. The Android app enables real-time attorney-client collaboration: video consultations, secure messaging, e-signing, and full case management on mobile. Integrated CRM and legal document tools (Clio, DocuSign) with seamless cross-platform delivery across Android, iOS, and web. Stack: Kotlin · Android SDK · Swift · React Native · TypeScript · PHP 8 (Symfony) · AWS ECS Fargate · Firebase · Docker · CircleCI Result: Scalable white-label LegalTech SaaS · enterprise-grade security & data protection · consistent UX across all platforms and device types. 📡 Boarding Path (Smart Navigation, iOS) – Led the discovery phase for a native iOS indoor navigation platform. Conducted technical feasibility analysis, vendor evaluation (IndoorAtlas, beacons), UX design for complex indoor environments, and full documentation to launch development with zero guesswork. Stack: Swift · Native iOS · Python · Django · IndoorAtlas · AWS · PostgreSQL Result: Concept validated before a dollar was spent on development · technical risks eliminated upfront · market-ready iOS roadmap with full vendor alignment. 🏅 North Jersey Vipers (Sports, USA) – Built a cross-platform mobile app for a US sports club – enabling content sharing, team updates, and secure media storage for players, coaches, and parents. Delivered iOS + Android from a single React Native codebase within a tight budget and timeline. Stack: React Native · JavaScript · Nest.js · Node.js · AWS Result: Cost-optimized cross-platform delivery · secure content storage · minimized long-term maintenance overhead. 📱 Platforms & Frameworks React Native · Flutter · Expo Native iOS: Swift · SwiftUI · Objective-C Native Android: Kotlin · Java Progressive Web Apps (PWA) 🌐 Backend & APIs Node.js · Nest.js · PHP · Symfony · Python · Django REST APIs · GraphQL · WebSockets · Firebase Realtime Database ☁️ Cloud & Infrastructure AWS (ECS Fargate, Lambda, S3, RDS, CloudFront) GCP · Azure · Docker · Kubernetes CI/CD: Bitrise · CircleCI · GitHub Actions 🤖 AI Integration OpenAI GPT · Vector Search · AI-powered mobile features LLM-based content personalization · Intelligent recommendations AI chatbot integration for mobile apps 🔗 Mobile Integrations Stripe · Clio · DocuSign · IndoorAtlas Firebase Push Notifications · WebRTC (video consultations) App Store & Google Play – full submission and launch support 🔐 Security & Compliance HIPAA-aware mobile development · GDPR-compliant data handling Secure messaging · E-signing · Enterprise-grade authentication Biometric auth · End-to-end encryption Why teams choose us: ✅ Full platform coverage – React Native, Flutter, Native iOS (Swift) & Native Android (Kotlin) from one team, no handoffs ✅ 330+ engineers – backend, DevOps, QA, and UI/UX always available alongside mobile development, so you never hit a skills gap ✅ 2,250+ delivered projects across HealthTech, LegalTech, FoodTech, Sports, Wellness, and B2B SaaS ✅ Full-cycle delivery – from discovery and UX design to backend API, cloud infrastructure, and App Store submission ✅ AI-ready from day one – we integrate OpenAI, vector search, and intelligent features into mobile apps without slowing the timeline Send me a message – tell me about your app idea, and I'll respond within a few hours with a clear plan and honest timeline estimate.

About me: Experienced in electronics and software developing. Skilled in circuit design, PCB development, FPGA. Proficient in multiple programming languages like Assembler, C, C++, C#, Java, js, Verilog, Bash. Plus, last 4 years an experience of working with AUTOSAR project. Many years of experience to develop and support cross-platform desktop SW under Windows/Linux/MacOS with using Java Spring, Groovy, MSVC, .NET (C#), Qt and bash scripting. Experience in DevOps and logging area: Amazon AWS, Ansible, Packer, Terraform, Concourse, ELK stack and oth. Team Lead experience - capable of managing and guiding developer teams. Worked in teams on projects of varying complexity in companies like Comcast (US) and Harman, Continental (Germany). Friendly, responsible, and punctual, with a collaborative mindset.