Software Developers
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Meet FRATCH Software Developer
Marco Skulschus
Last position:
Business Analyst, Data Warehouse Developer at NRW.Bank
Business analysis for risk controlling.
Development of a data warehouse based on MS SQL Server with data from the FIS Cross-Asset Trading and Risk Platform (formerly Front Arena).
Implementation of ETL and transformation logic with T-SQL and Python (template engine Jinja2).
Modeling and automation of data structures with Data Vault.
Building reporting and analysis reports with Microsoft Power BI, including training and onboarding of users.
Karin Albiez
Last position:
AI Benchmark Engineer | Native language specialist German at Lilt
- Task Engineering: Evaluating Coding Agents.
- Asset Creation: Building realistic task environments using datasets and files in German. Crucially, these assets must remain in the target language to genuinely measure multilingual handling.
- Prompting & Translation: finding failure points where AI does not work, in German.
- Implementation & Verification: Supporting the development of robust solutions (reference implementations) and write highly reliable, deterministic verifier scripts (using rubric-based judging only when strictly necessary).
- Calibration & Execution: Analyze execution logs and calibrate task difficulty (Easy to Very Hard) using standard Terminal-Bench run configurations against various model tiers (Haiku, Opus).
- Quality Assurance: Participation in a rigorous, 4-layer human quality control process (creation, human review, calibration review, and audit) alongside automated LLM-based checks to ensure fairness, grammatical accuracy, and benchmark integrity.
- Linguistic Review: Reviewing AI benchmark tasks across Hindi, Arabic, Japanese, Chinese, Czech and Turkish.
Hooman Behmanesh
Last position:
Fullstack Developer at Möbel Roller GmbH
- Further development of the existing e-commerce platform based on SAP Commerce (Hybris) to meet the growing demands of digital commerce.
- Ensuring the scalability and performance of the backend, so the platform remained stable and efficient even under heavy user load.
- Development and integration of new OCC REST APIs and services for modular extensions and flexible adjustments, to implement new features quickly.
- Optimization of data flows and interfaces, which significantly improved platform efficiency and system performance.
- Ensuring a maintainable and scalable code base by using Clean Code principles, proven design patterns, and a future-proof architecture.
- Reduction of errors through extensive testing with JUnit, Mockito, and load tests with Gatling, supported by the introduction of automated test processes.
- Improved system performance through targeted refactoring measures and efficient database queries, especially to handle peak loads.
- Use of modern cloud and monitoring tools such as Kubernetes, Google Cloud Platform (GCP), and Grafana to ensure a stable and monitored infrastructure.
- Clear improvement in efficiency, scalability, and reliability of the platform, which now meets the demands of a dynamic and growing e-commerce market.
Niko Schmuck
Last position:
Developing Architect, Technical Lead "gridlytics" at HH Energienetze
- Building a data integration platform for high, medium, and low voltage assets for contextual analysis of time series with master data from the SCADA control system (IEC 60870 104), INIS, and SAP.
- Responsibility for the architecture and implementation of the solution, as well as sparring partner for the Product Owner.
- Use of Kotlin, Spring Boot, Maven, TimescaleDB, PostgreSQL, liquibase, Elements IoT, Docker, Kubernetes, Grafana, Python, jupyter, and various API gateways.
Karl Forstner
Last position:
ONECEPT Website at ONECEPT GmbH
Development and implementation of the website onecept.at with React/Next.js. Focus on responsive web design, a high-performance component structure, basic SEO optimization, and technical deployment.
Technologies: React, Next.js, TypeScript / JavaScript
Yusuf Congar
Last position:
Senior Software Engineer at LeiKon GmbH
- Development of scalable backend applications with C#/.NET and Java
- Design and implementation of distributed microservice architectures
- Development and integration of REST APIs for industrial applications
- Development of modern web applications with React, Angular, and TypeScript
- Implementation of MQTT-based communication solutions
- Integration of industrial protocols such as OPC UA and Modbus TCP
- Development of batch, process control, and HMI components
- Containerization and deployment of applications with Docker
- Conducting code reviews and supporting architecture decisions
- Close collaboration with product owners, QA, and interdisciplinary teams
- Analysis of business requirements and implementation of technical solutions
- Further development of existing software architectures with a focus on maintainability and performance
Technologies: C#, .NET, ASP.NET Core, Java, C++, React, Angular, TypeScript, Vue.JS, MQTT, OPC UA, Modbus TCP, Docker, GitLab, MariaDB, MySQL, Linux
Mario Mohar
Last position:
Co-Founder and CTO at B2B SaaS Recruiting Platform
Complete build of a B2B SaaS platform for recruitment agencies
- Multi-source job aggregation via ATS APIs
- AI-assisted career page scraping
- Rule-based and AI-assisted matching
- Credit-based monetization model with Stripe integration
- Live in production since July 2026
Tech stack
- NestJS
- React
- PostgreSQL
- pgvector
- Claude AI
- Prisma
Emil Ostberg
Last position:
Automation Engineer In House at Prevas AB
Working as an Automation Engineer in Prevas' in-house engineering team. My primary assignment involves developing and expanding ABB 800xA SCADA systems for a large-scale data center project. Responsibilities include SCADA graphic design, alarm management, system integration using OPC UA and Modbus, testing, verification, documentation, and commissioning support. In addition, I contribute to PLC and HMI development projects using Siemens, Rockwell, and ABB platforms and provide 24/7 remote support for industrial customers.
- ABB 800xA & ControlBuilder/ AC800M
- Rockwell Studio 5000 Logix Designer
- Siemens TIA Portal
- ABB 800xA
- Remote Support
- Troubleshooting hardware/software
Niklas Witzel
Last position:
AI Engineer at Tensora GmbH
- Designed and developed a multi-tenant SaaS platform enabling organizations to build their own knowledge bases and chat with brand-customized AI assistants (white-label approach with dynamic branding per organization).
- Implemented a scalable RAG architecture with a GPT-4o tool-use loop, hybrid semantic search, and strict tenant isolation at database and search index level.
- Built persistent, project-like chat sessions including a streaming API (SSE), multilingual support, and speech input/output (STT/TTS).
- Delivered the cloud infrastructure as Infrastructure-as-Code, fully automated per-customer CI/CD pipelines, and an onboarding process for new tenants.
Technologies used: Python, FastAPI, Pydantic (v2 noted), Next.js, React, TypeScript, Tailwind CSS, OpenAI / LLMs (GPT-4o), Azure AI Search, Cosmos DB, Azure Blob Storage, Azure Cognitive Services Speech, Azure App Service, Azure Container Registry, Retrieval-Augmented Generation (RAG), Server-Sent Events (SSE), Docker, Terraform, GitHub Actions, REST, OpenID Connect (OIDC), Multi-Tenancy
Philipp Steidler
Last position:
Solution Architect, Software Engineer, UX/UI Designer, Full-Stack Developer, Data Engineer, IT Consultant at Geigenbau-Meisterwerkstatt
- A digital system made up of special software and hardware components. The overall system replaces the traditional process with job slips and handwritten notes and enables more efficient order intake. Orders and work steps for the violin-making company’s projects can now be recorded, processed and logged in real time directly on the workshop’s touchscreen PC, by mobile phone or on the desktop. This gives customers a more transparent view of the work on their instruments and allows them to track the status and progress of their instrument through their customer account.
Tech stack: next.js, React, Flutter, Dart, Raspberry, Linux, Directus
Egon Maier
Last position:
SAP S/4HANA Integration Consultant – MES / Siemens Opcenter Integration at Metso Corporation
- Supported an integration project between SAP S/4HANA and a MES / Siemens Opcenter system via Azure Middleware.
- Responsible for SAP-side analysis, mapping and provisioning of relevant data objects such as material master data, production orders and process orders using SAP standard APIs and OData services.
- SAP-side mapping for Material Master, Production Orders and Process Orders
- Usage of API_PRODUCT, API_PRODUCTION_ORDER_2_SRV and API_PROCESS_ORDER_2_SRV
- Consideration of SAP S/4HANA Advanced Available-to-Promise for order confirmation, production availability and downstream MES execution
- Support for SAP Gateway and OData service topics
- Interface coordination between SAP S/4HANA, Azure Middleware and MES / Siemens Opcenter
- Support for testing, monitoring and error analysis
- Worked with BTC Cockpit and Deloitte ASADEV Tool
Matthias Spiller
Last position:
Software Developer and Consultant at CLADE GmbH
- Analysis of the existing CAN communication between microcontrollers
- Analysis of the sensors used and the measured values collected
- Planning the CAN messages for transmitting the measured values
- Iterative adjustment of the microcontroller code to the new CAN messages
- Cross-compilation from x64 to arm64
Krisztian Simon
Last position:
Freelance Evaluator & Human Data Reviewer at Independent AI Training & Evaluation Projects
- Evaluate AI-generated outputs against detailed rubrics covering relevance, accuracy, groundedness, safety, naturalness and task completion.
- Review simulated storefront and support-agent conversations for groundedness, policy compliance, naturalness and task completion.
- Compare AI-generated image and video outputs for prompt alignment, visual consistency, artifacts, realism and temporal coherence.
- Apply changing calibration guidance and edge-case policies consistently across high-volume evaluation workflows.
- Write concise, evidence-based scoring rationales that separate observed facts from assumptions.
- Handle e-commerce product classification, catalog QA, search quality evaluation, category tagging and attribute extraction for structured datasets.
Hervé Teguim
Last position:
Senior Data Engineer at Schweizerische Post AG
Tools: Fabric, AWS, dbt, Power BI, SQL, DWH, R, Python
- Supported customers in implementing an architecture design for extracting and preparing data
- Planned the design and implementation of the BI and DWH platform
- Ensured the scalability and performance of the data platform
Oliver Fries
Last position:
Modernization of a multi-company backend system at Energy utility company
Enhancement and modernization of a mature Aspire backend application in the environment of a utility company, focusing on new business requirements, testing, legacy code cleanup, and stable backend delivery.
Core contributions & results Implemented new business requirements in the context of customer orders, subcontractors, and cross-company backend processes, and ensured consistent workflows in a distributed system landscape. Modernized existing backend components step by step and reduced technical debt through targeted legacy code cleanup, refactoring, and structured code reviews. Improved the testability of business-critical services by expanding automated tests with xUnit, AutoFixture, and clearer validation structures. Supported the further development of workflow automations and integration processes via microservices, messaging, and API-based communication. Took over source code from external firms, systematically checked code quality, and derived technical improvements for maintainability, stability, and integration. Worked in agile development processes with Jira, Confluence, and Azure DevOps and supported cross-team alignment on architecture, quality, and implementation. Technical metrics Technologies & methods C#, .NET, ASP.NET, ASP.NET Core, Aspire, Docker, RabbitMQ, gRPC, REST API, Swagger, Microservices, NServiceBus, AutoMapper, Autofac, xUnit, AutoFixture, FluentValidation, Entity Framework Core, MediatR, Redis, Consul, Serilog, SonarQube, Azure DevOps, Azure Monitor, GitLab, Google Protocol Buffers, IronPDF, Mailjet, Jira, Confluence, Miro, agile development, Scrum, code reviews, refactoring, legacy code cleanup, workflow automation, power grids
Discover over 15,000 top freelancers
Software Developer statistics
Aggregated from the professional profiles of matched freelancers.
Experience
17 years
Position duration
5.2 years
Positions per freelancer
11
Top business areas
Information Technology, Product Development, Quality Assurance
Top industries
Information Technology, Banking and Finance, Manufacturing
Certification focus areas
Information Technology, Product Development, Project Management
Bachelor's degree or higher
90%
Master's degree or higher
50%
Doctorate
5%
Certifications per freelancer
2
Most common languages
English, German, French
Speak two or more languages
95%
Based on our profile pool as of 21 Aug 2026.
Daily rate distribution
The chart shows how the daily rates of freelancers in this role 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 for Software Developer
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 21 Aug 2026. Actual rates may vary depending on seniority level, experience, skill specialization, project complexity, and engagement length.
About the role
Build and ship
A software developer turns product needs into working code. The work can cover new features, bug fixes, refactoring, system integration, or full application builds. Typical deliverables include:
- Frontend, backend, or full-stack implementations
- APIs and service integrations
- Code reviews, debugging, and performance fixes
- Test coverage, deployment support, and documentation
Core skills
Strong developers write clean code and understand how software fits into a business process. They work with common languages and frameworks such as JavaScript, TypeScript, Python, Java, C#, PHP, Ruby, and Go, depending on the stack. They should also be comfortable with Git, CI/CD, databases, REST APIs, and testing practices.
A good developer does not just deliver code. They ask the right questions, spot edge cases early, and keep changes maintainable for the next person who touches the system.
Where they help
Companies bring in a freelance software developer when they need fast support without a long hiring cycle. That is common for product launches, legacy system upgrades, internal tools, customer portals, integrations, and urgent bug fixing. It also works well when a team needs extra hands for a sprint, a migration, or a specialist skill that is only needed for part of the project.
In Germany, many clients want someone who can work closely with in-house product, design, or engineering teams and communicate clearly in English or German, depending on the setup. Remote work is common, but on-site collaboration can help during architecture decisions, handovers, or tight delivery phases.
Good tools and stacks
The exact stack depends on the project, but strong candidates usually know how to move across the full development flow:
- Version control and code collaboration with Git
- Agile delivery with tickets, reviews, and sprint planning
- Databases such as PostgreSQL, MySQL, or MongoDB
- Cloud and deployment tools such as AWS, Azure, Docker, and Kubernetes
- Testing tools, logging, monitoring, and release workflows
What sets them apart
The best software developers are reliable under changing requirements. They keep code readable, protect existing functionality, and communicate trade-offs clearly. They can work independently, but they also fit into an existing team without creating extra overhead.
Look for proof of shipped features, stable maintenance work, and solid documentation. A strong freelancer can explain technical choices in plain language and show how their work reduces risk, speeds up delivery, or improves the product.
Hiring fit
Freelance software development is a good fit when scope is clear, the timeline is tight, or the need is temporary. It also helps when you want a specific skill set for one system rather than a general long-term hire.
- You need to start soon
- You have a defined feature, fix, or migration
- You want senior hands on an existing codebase
- You need extra capacity without expanding the team permanently
Frequently asked questions
Before you brief your next project: the most common questions about Software Developer.
A Software Developer builds and improves applications, services, and internal tools. That usually includes writing new features, fixing bugs, connecting systems through APIs, and keeping the codebase maintainable. In many projects, the work also covers testing, deployment support, and technical documentation.
A strong software developer should write clean code, work with Git, and understand databases, testing, and deployment basics. The exact language or framework depends on your stack, but the person should be able to learn your system quickly and make safe changes. Good communication matters just as much as technical skill.
In practice, the terms software developer, software engineer, and programmer often overlap. Some companies use software engineer for roles with more system design or architecture work, while programmer is used more narrowly for coding. For freelance hiring, what matters most is the actual scope: build, maintain, integrate, or troubleshoot.
A freelance software developer makes sense when the work is project-based, urgent, or tied to a specific stack or system. It is also a good choice if you need senior support for a migration, release, or temporary capacity boost. If the need is ongoing and broad across many products, a permanent hire may be better.
Freelance software development works well for feature delivery, legacy modernization, API integrations, internal tools, and bug fixing. It is also useful for cloud setup, performance tuning, and short-term rescue work when a project is blocked. The best fit is a task with clear technical goals and defined handover points.
Look for evidence of shipped work, not just a list of technologies. A good software developer can explain trade-offs, show how they handle testing and code quality, and describe how they worked with product or design teams. Code samples, references, and a short technical conversation usually reveal a lot.
Most software development work can be done remotely if the team has clear communication and good tools. On-site time can help during discovery, kickoff, security-sensitive work, or when the codebase and stakeholders are tightly connected. The right setup depends on how much collaboration the project needs.
Prepare a clear scope, access to the relevant systems, and a short overview of the stack, goals, and blockers. A freelance software developer can move faster when they know the expected deliverables, who approves changes, and how the team handles releases. Good onboarding shortens the time to productive work.
The average hourly rate for Software Developer is 84 €, which corresponds to a daily rate of about 668 € based on an 8-hour working day.
Of the freelancers working as Software Developer, 90% hold at least a Bachelor's degree, 50% hold at least a Master's degree, and 5% hold a doctorate.
On average, freelancers working as Software Developer have 17 years of professional experience, with a single engagement typically lasting around 5.2 years.
The most common languages among freelancers working as Software Developer are English (96%), German (79%), and French (14%).
The most common industries among freelancers working as Software Developer are Information Technology (92%), Banking and Finance (40%), and Manufacturing (35%).
The most common business areas among freelancers working as Software Developer are Information Technology (98%), Product Development (92%), and Quality Assurance (52%).
FRATCH Software Developer main locations
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.
Request a free demo
Get in touch with the FRATCH team and we will get back to you within 4 hours.
Would you rather directly get in touch?
We always have the time for a call or email!
Philipp Thomaschewski
FRATCH CEO
