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Fortran Experts in Düsseldorf

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Hire experts who keep legacy Fortran systems stable, modernize scientific code, and connect old routines with newer tools such as Python, C, and HPC stacks. Get fast, precise matching with vetted, available freelancers.

Meet FRATCH Experts in Düsseldorf, who have recently used Fortran

Verified expert

Thorsten Lenzen

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Senior Developer & AppSec Specialist

Krefeld
Thorsten Lenzen

Last position:

Senior Security Analyst

  • Analysis and remediation of security vulnerabilities in a risk assessment system for energy trading
  • System analysis
  • Threat modeling
  • Decision-making on vulnerability mitigation strategies
  • Implementation of vulnerability detection mechanisms
  • Security scans
  • DevSecOps practices
  • Technical environment: Visual Studio Code, JetBrains Suite, MS Threat Modeling Tool, DevSecOps, Git, AWS, DynamoDB, SQL Server, Endur, Snowflake, Orca
  • Languages: C#, JavaScript, TypeScript, Python, PowerShell, Bash, Terraform, SQL
Verified expert

Gernot Lang

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Founder and Managing Director

Mülheim an der Ruhr
Gernot Lang

Last position:

Founder and Managing Director at Softwerk/Ruhr GmbH

  • Architecting and developing SaaS platform for graphical definition and execution of pandas data processing pipelines
  • Developed POlyglott, an open-source Python CLI tool for translation workflow management featuring PO file parsing, quality linting with glossary enforcement, and DeepL API integration for machine translation
  • Developed web application for material compliance management (EU REACH) using Django and modern web technologies
  • Built automated infrastructure platform using Proxmox, Terraform, and Ansible — VM provisioning, configuration management, internal DNS, and fleet-wide security hardening across multiple subnets
Verified expert

Matthias Fitzner

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Information Security Project Manager

Leverkusen
Matthias Fitzner

Last position:

Information Security Project Manager at Deutsche Bahn AG

  • Introduction of a new Information Security Management System (ISMS) according to ISO/IEC 27001.
  • Implementation of the cybersecurity guideline RL CySec-Rail for cross-border rail networks.
Verified expert

Bernhard Döpper

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Senior Architect, Project Manager and Coach

Hilden
Bernhard Döpper

Last position:

Enterprise Architect. And responsible for the cross-functional architecture as well as all domains with a focus on the sales at Süddeutsche Krankenversicherung

  • Creation of business and technical concepts as well as support for enterprise architecture management as part of the migration to the Adesso standard insurance solutions and the renewal of surrounding systems

  • Interface definitions

  • Business analysis and creation of the business concepts for input management and sales

  • Creation of architecture guidelines and processes

  • Processing technical and business decisions in the architecture board

  • Definition of service processes and system management aspects

  • Creation of the technical target operating model

  • Creation of an integration architecture for AI/LLMs from the providers Commasoft and Insiders

  • CommaSoft (Alan) webpages and web services

  • Insiders for Smartfix based on web services

  • Creation of a question catalog for a security/regulatory check.

  • Analysis of threats using threat modeling / STRIDE incl. creation of a set of measures to secure the systems

System environment: Jira, Confluence, Java, Enterprise Architect, VAIT/DORA, KritisV, GDPR, IT ServiceMgmt, Adesso Ecosphere and Insure Health, DoPIX and successor product, SmartFix, SmartFlow, Zabas, Kolumbus, Clarc archive, BiPRO, AI / LLM, MS Azure, AWS, TOM/FMO

Discover over 15,000 top freelancers

Statistics of experts using Fortran

Aggregated from the professional profiles of matched freelancers.

Experience

29 years (Germany: 30 years)

Position duration

2.8 years (Germany: 2.7 years)

Positions per freelancer

15 (Germany: 16)

Top business areas

Information Technology, Operations, Product Development

Top industries

Manufacturing, Information Technology, Professional Services

Certification focus areas

Information Technology, Project Management, Human Resources

Bachelor's degree or higher

83% (Germany: 91%)

Master's degree or higher

50% (Germany: 66%)

Doctorate

17% (Germany: 27%)

Certifications per freelancer

5 (Germany: 3)

Most common languages

German, English, Spanish

Speak two or more languages

100%

Based on our profile pool as of 30 Aug 2026.

Daily rate distribution

0 1 2 3 4
<€640 €640-​720 €720-​800 €800-​880 €960+

The chart shows how the daily rates of freelancers in this technology in Düsseldorf 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 Düsseldorf using Fortran

Rates are based on recent contracts and do not include FRATCH margin.

1000
750
500
250
Rate comparison chart
Daily rate avg. 789 €
Germany avg. 816 €

The average daily rate is the mean of all daily rates from recent contracts of comparable freelancers on our platform.

1000
750
500
250
Rate comparison chart
Median rate 760 €
Germany median 800 €

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

What Fortran is

Fortran is a long-standing language for numerical work, simulation, and technical computing. It is still used where speed, memory control, and predictable results matter. Companies hire Fortran specialists to maintain trusted code and extend it without breaking core logic.

Where it runs

  • Scientific models and research software
  • Engineering and simulation workflows
  • Finance and risk calculation engines
  • High-performance batch jobs
  • Legacy systems that still carry critical business rules

Fortran often sits inside larger systems, not as a standalone product. A strong specialist knows how to keep the core stable while making it easier to call from other services and tools.

Skills around the code

Good Fortran professionals work with modern compiler toolchains, build systems, and version control. They also understand array performance, precision, parallel execution, and how to read old code that was written for a very different runtime environment.

They often bring experience with:

  • module and interface design
  • debugging numerical issues
  • performance tuning on HPC environments
  • mixed-language integration
  • test coverage for scientific logic

When companies bring in help

Teams usually look for freelance expertise when an older system is too risky to touch, a simulation needs faster execution, or a migration must preserve numerical results. Dusseldorf companies in engineering, industrial software, and research-heavy environments often need this kind of support for short, focused work.

Freelancers can also help when internal specialists are busy and the code base needs urgent maintenance.

What strong specialists do

Strong Fortran experts do more than write syntax correctly. They trace data flow, protect numerical accuracy, and document code that has little context left around it. They know when to modernize a routine and when to leave a stable path alone.

They are careful with testing, compiler flags, and edge cases. That matters when a small change can alter the output of a model or calculation.

Choosing the right fit

Look for clear experience with the Fortran dialect your code uses, such as modern Fortran or older fixed-form code. Ask for examples of maintenance, refactoring, performance work, and integration with Python, C, or MPI where relevant.

For projects in Düsseldorf, remote work is often practical, but on-site help can matter when the code is tied to lab systems, internal data, or sensitive technical workflows.

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Frequently asked questions

Curious about Fortran? Here are the answers that come up again and again.

Fortran is used for numerical computing, simulation, and other workloads that need stable and fast execution. You still see it in engineering tools, weather and climate models, physics codes, and financial calculation engines. It is a good fit when precision and performance matter more than flashy frameworks.

A strong Fortran freelancer helps when a team needs focused support on legacy code, performance tuning, or a risky migration. Many companies do not need a full-time specialist, but they do need someone who can read old routines quickly and make safe changes. That is especially useful when the code base is business-critical.

Fortran is usually chosen for heavy numerical work and large array processing. C and C++ offer broader low-level control, while Python is often used as a scripting or orchestration layer around fast Fortran routines. In many projects, the best setup is a mix: Fortran for the core computation and Python or C for integration.

A capable Fortran specialist often works with compilers, build tools, testing, and source control. Common adjacent skills include Python, C, MPI, OpenMP, and HPC environments. For migration work, experience with data formats and interface layers is also valuable.

A simple cleanup or small maintenance task may only need a specialist who knows the code style and compiler behavior well. A migration, performance rewrite, or mixed-language integration needs deeper experience with Fortran and numerical testing. The more sensitive the outputs, the more important proven delivery becomes.

Yes, most Fortran work can be handled remotely if the code, build access, and test data can be shared safely. On-site work can still help when systems are locked down, lab-connected, or tied to local hardware. For Düsseldorf-based teams, a hybrid setup is often the most practical option.

Look for clear explanations, careful testing, and a record of preserving results while improving code. A strong Fortran professional should be able to explain compiler choices, precision issues, and any performance changes in plain language. Good documentation and cautious refactoring are both strong signs.

Yes, Fortran can still be a strong choice when the project is centered on numerical performance and large data arrays. It is especially useful if the team needs to stay close to established scientific libraries or existing models. For broader application layers, many teams pair it with other tools instead of forcing it to do everything.

The average hourly rate of freelancers in Dusseldorf, Germany who have used Fortran in their recent projects is 99 €, which corresponds to a daily rate of about 789 € based on an 8-hour working day.

Of the freelancers in Dusseldorf, Germany who have used Fortran in their recent projects, 83% hold at least a Bachelor's degree, 50% hold at least a Master's degree, and 17% hold a doctorate.

On average, freelancers in Dusseldorf, Germany who have used Fortran in their recent projects have 29 years of professional experience, with a single engagement typically lasting around 2.8 years.

The most common languages among freelancers in Dusseldorf, Germany who have used Fortran in their recent projects are German (100%), English (100%), and Spanish (33%).

The most common industries among freelancers in Dusseldorf, Germany who have used Fortran in their recent projects are Manufacturing (100%), Information Technology (83%), and Professional Services (67%).

The most common business areas among freelancers in Dusseldorf, Germany who have used Fortran in their recent projects are Information Technology (100%), Operations (83%), and Product Development (83%).

Main locations of FRATCH Experts, who have recently used Fortran

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.

Berlin Hamburg Munich Cologne Frankfurt Stuttgart Dusseldorf Leipzig Dortmund Essen Bremen Dresden Hanover Nuremberg

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FRATCH CEO

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