MQTT Experts in Berlin
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Meet FRATCH Experts in Berlin, who have recently used MQTT
Abhishek Nair
Last position:
Fullstack Developer at DAMALO GmbH
- Own full-stack development of an AI-native enterprise platform built on TypeScript, React, Vite, tRPC, Hono, and PostgreSQL, delivering AI-powered consulting workflows to B2B clients.
- Designed and shipped a multi-agent AI system using ReAct framework and Claude skills-style workflow patterns, including an intelligent PM assistant with rich system prompts, slash commands, tool integrations, and streaming chat UI.
- Architected an LLM evaluation framework: rubric-based LLM-as-judge, golden datasets, regression testing, and automated quality gating — ensuring consistent AI output quality at scale.
- Integrated LangFuse for end-to-end LLM tracing, conversation replays, and evaluation pipelines, enabling data-driven prompt optimisation that reduced token costs and response variance.
- Built with Drizzle ORM, pgvector, and knowledge graphs for structured data access, semantic search, and relationship-aware AI reasoning across the platform.
- Led TanStack React Query migration across the application — replacing manual state management with centralised caching and automatic refetching, reducing data-fetching boilerplate significantly.
- Practiced AI-native development throughout: Claude Code, Codex, Perplexity SDK, and LLM-assisted testing across the full development lifecycle. Deployed on Vercel + Azure ACA with Biome for linting/formatting.
Mathias Wilhelm
Last position:
Implementation of an on-premise OCR solution with information extraction at Mindhopper GmbH
- Insurance service provider*
Challenge: Business-critical documents were processed through external OCR providers, with ongoing costs, dependency, and data privacy risks for sensitive insurance data.
Implementation:
- Architecture and production implementation of an on-premise OCR solution with full data ownership
- Methods for recognizing document structures as the basis for automated further processing
- ML-, NLP-, and LLM/VLM-based information extraction, especially from invoices and quotations
Success: Replaced external providers: full data ownership, GDPR-compliant processing, and 75% lower recurring OCR costs per year
Used technologies: Python, Docker, Microservices, FastAPI, PyTorch, Torchvision, MongoDB, MySQL
Qaiser Abbasi
Last position:
Freelance Lead DevOps Engineer at Schwarz Gruppe Produktion
Bootstrapping a CloudOps team and building a multi-cloud provider backend for a low-code Internal Developer Platform (IDP) with env zero
Introducing user story mapping, ADRs, milestones, and backlog management
Designing and developing core APIs, setting up CI/CD pipelines, OpenTofu/Terraform scripts
Representing and communicating the team with third-party stakeholders (e.g. env zero)
(Cross-)team coaching on DevOps, software design, Terraform, Golang, and agile practices
Anuja Chandran
Last position:
Embedded Software Engineer at Digital Core Technology
- Designed and implemented embedded firmware in C/C++ for ARM-based microcontrollers and SoCs (STM32, NXP, Infineon)
- Worked across bare-metal, FreeRTOS, and Embedded Linux environments, contributing to BSP-level functionality, driver bring-up, and system integration
- Built, configured, and validated Embedded Linux systems using Yocto, including image build, boot validation, and runtime debugging
- Developed and executed unit, integration, and system-level tests, including HIL and SIL test scenarios on real hardware and simulated environments
- Created Python and Bash scripts to automate build, test execution, simulation runs, and reporting within CI/CD pipelines (Jenkins, GitLab CI)
- Designed test cases from software and system-level requirements, covering normal operation, edge cases, and failure scenarios
- Performed low-level debugging using JTAG/GDB, analyzing boot issues, timing problems, interrupts, and peripheral behavior
- Developed and validated communication interfaces including UART, SPI, I2C, CAN using logs and external measurement tools
- Used simulation and virtual test environments to validate software behavior prior to hardware availability
- Read and interpreted hardware schematics to understand signal routing, pin multiplexing, and peripheral connections
- Supported PCB design and review activities using Altium tool, assisting with component selection, pin mapping, and bring-up readiness
- Collaborated with cross-functional hardware, firmware, and system teams to clarify requirements, document assumptions, and improve overall test coverage
- Developed web interfaces using HTML, CSS, and JavaScript (ES6) and basic REST API development with Node.js
- Experience testing web applications and building UI automation frameworks using Selenium WebDriver
Olaf Nouvortne
Last position:
Frontend Engineer at Danaher/Hach Lange GmbH
- Developed a SolidJS frontend UI for a spectrometric water analysis system on an ARM-based embedded Linux platform
- Prototyped UI in TypeScript React/Nx with LitElements and MQTT integration
- Built production UI using SolidJS, SUID, i18next, Ajv, MQTT.js, C3.js
- Refined requirements with UX team and water analysis system engineers
- Defined and documented system architecture, MQTT message formats, frontend architecture, and development setup
- Set up frontend system from scratch, implemented domain-oriented type system, UI components, and application state
- Managed MQTT pub/sub services and schema-based message validation in frontend
- Coached two junior frontend developers
- Worked in an agile remote team using JIRA, Git, and Bitbucket
Kashaf Khan
Last position:
AI Consultant / Expert at Siemens Mobility
- Evaluated 45+ AI use cases and developed a prioritization framework for Siemens’ internal AI roadmap.
- Tested internal tools like DRIM, SiemensGPT, Microsoft Copilot; presented evaluation outcomes to stakeholders.
- Identified performance gaps and improved tool adoption by 65%.
- Supported AI knowledge-sharing initiatives, led tool onboarding sessions, and improved team AI literacy.
- Collaborated with engineering, procurement, and digital teams on tool feedback and strategy alignment.
Mostafa Solaiman
Last position:
Embedded Firmware Engineer at Esko-Graphics Imaging GmbH
- FPGA code conversion from AHDL to Verilog and SystemVerilog (Altera Cyclone)
- IDE: Intel Quartus Prime (Altera)
- Code simulation: QuestaSim
- Timing analysis
Mario Ellebrecht
Last position:
Developer and Consultant at Freelancer
Discover over 15,000 top freelancers
Statistics of experts using MQTT
Aggregated from the professional profiles of matched freelancers.
Experience
18 years (Germany: 20 years)
Position duration
2.3 years (Germany: 3.2 years)
Positions per freelancer
13
Top business areas
Product Development, Information Technology, Research and Development
Top industries
Information Technology, Healthcare, Education
Certification focus areas
Information Technology, Business Intelligence, Project Management
Bachelor's degree or higher
100% (Germany: 88%)
Master's degree or higher
83% (Germany: 63%)
Doctorate
17% (Germany: 6%)
Certifications per freelancer
2 (Germany: 3)
Most common languages
German, English, Arabic
Speak two or more languages
100% (Germany: 99%)
Based on our profile pool as of 30 Aug 2026.
Daily rate distribution
The chart shows how the daily rates of freelancers in this technology in Berlin are distributed, based on recent contracts on our platform. Each bar covers a rate range — its height shows how many freelancers charge within that range.
Average rates of experts in Berlin using MQTT
Rates are based on recent contracts and do not include FRATCH margin.
The average daily rate is the mean of all daily rates from recent contracts of comparable freelancers on our platform.
The median daily rate is the middle value of all daily rates — half of comparable freelancers charge less, half charge more. Unlike the average, it is barely affected by outliers.
Calculated based on our freelancers’ daily rates as of 30 Aug 2026. Actual rates may vary depending on seniority level, experience, skill specialization, project complexity, and engagement length.
About the technology
MQTT Basics
MQTT is a lightweight publish-subscribe protocol for sending messages between devices and services. It is used when systems need low overhead, predictable delivery, and simple topic-based routing. Many teams also know it as MQ Telemetry Transport.
Where It Fits
It is common in IoT, connected hardware, telemetry pipelines, alarms, and remote monitoring. In Berlin, companies use it for smart building systems, energy devices, mobility products, and industrial integrations where small messages must move reliably across weak networks.
What Experts Deliver
- Broker setup and topic design
- Device onboarding and authentication flows
- QoS planning and retained message handling
- Bridging to cloud services and backend APIs
- Monitoring, logging, and failure recovery
Ecosystem Skills
Strong professionals work with brokers such as Eclipse Mosquitto, EMQX, HiveMQ, and cloud IoT services that expose MQTT endpoints. They also understand TLS, certificates, payload design, reconnect logic, and how MQTT fits with Node.js, Java, Python, and embedded systems.
When To Bring In Help
Bring in freelance expertise when message delivery is flaky, topics are hard to govern, or device fleets need a cleaner protocol strategy. It also helps when you are moving from a prototype to production and need someone who can review broker config, security, and integration paths without slowing the team.
What Good Looks Like
A strong professional keeps the topic model simple, documents quality-of-service choices, and tests reconnect and offline behavior. They understand the difference between MQTT and heavier message buses, and they know when to use bridges, retained messages, or shared subscriptions instead of custom code.
Frequently asked questions
Before you brief your next project: the most common questions about MQTT.
MQTT is used for device messaging, telemetry, alerts, and event delivery in connected systems. It is a good fit when many small messages must move quickly and reliably between sensors, apps, gateways, and backend services.
MQTT is built for publish-subscribe messaging, while HTTP is request-response and WebSockets are usually used for persistent two-way connections. Teams choose MQTT when they need lightweight delivery, topic routing, and strong support for unreliable networks or battery-powered devices.
A solid MQTT specialist should know broker setup, topic naming, access control, and TLS. Familiarity with Eclipse Mosquitto, EMQX, HiveMQ, and cloud IoT endpoints is often important, along with practical experience in payload formats and monitoring.
A small proof of concept may only need someone who can wire up a broker and a few publishers and subscribers. Production work needs deeper MQTT knowledge, especially around security, reconnect logic, retained messages, and delivery guarantees.
Yes. MQTT is often the edge protocol, then messages are forwarded into cloud services, APIs, queues, or databases. A good specialist will design the bridge so backend systems stay simple and device traffic stays reliable.
Both can work well for MQTT projects. Remote specialists are often enough for broker configuration, integration work, and code review, while on-site sessions can help when hardware, network behavior, or factory and building systems need hands-on testing in Berlin.
Look for clear topic structures, sensible security choices, and proof that the person understands failure modes, not just happy-path messaging. A strong MQTT professional can explain QoS trade-offs, offline handling, and how to keep devices and services stable under load.
Yes, MQTT is the common abbreviation for MQ Telemetry Transport. If someone uses the older full name, they usually mean the same protocol and ecosystem, so the key is still whether they understand brokers, topics, and delivery behavior.
The average hourly rate of freelancers in Berlin, Germany who have used MQTT in their recent projects is 89 €, which corresponds to a daily rate of about 710 € based on an 8-hour working day.
Of the freelancers in Berlin, Germany who have used MQTT in their recent projects, 100% hold at least a Bachelor's degree, 83% hold at least a Master's degree, and 17% hold a doctorate.
On average, freelancers in Berlin, Germany who have used MQTT in their recent projects have 18 years of professional experience, with a single engagement typically lasting around 2.3 years.
The most common languages among freelancers in Berlin, Germany who have used MQTT in their recent projects are German (100%), English (100%), and Arabic (13%).
The most common industries among freelancers in Berlin, Germany who have used MQTT in their recent projects are Information Technology (100%), Healthcare (63%), and Education (50%).
The most common business areas among freelancers in Berlin, Germany who have used MQTT in their recent projects are Product Development (100%), Information Technology (88%), and Research and Development (88%).
Main locations of FRATCH Experts, who have recently used MQTT
Our freelancers and interim experts are at home across the DACH region — available on-site in the major business hubs or fully remote. Choose a location to discover matched specialists, local market insights and up-to-date availability.
Hamburg 
Munich 
Stuttgart Request a free demo
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Philipp Thomaschewski
FRATCH CEO
