Find the perfect Software Developers in Hamburg in minutes from over 15,000 CVs with the power of AI.
From backend APIs and cloud services to frontend apps, integrations, and legacy code refactoring, you get developers who can build, fix, and ship real product work. Fast, precise matching with vetted, available freelancers.
About the role
What they do
Software developers build and improve the code that runs products, internal tools, and customer-facing systems. They turn requirements into working software, connect services, and keep existing code stable as products change.
- Build new features and web or mobile applications
- Develop APIs, services, and integrations
- Refactor legacy code and clean up technical debt
- Support testing, deployment, and bug fixing
- Work with product, design, and engineering teams
Core skills
A strong software developer writes maintainable code and understands how software behaves in production. Common skills include clean architecture, debugging, version control, testing, and working with databases, APIs, and cloud environments.
- JavaScript, TypeScript, Python, Java, C#, Go, or similar stacks
- Git, code reviews, unit tests, and CI/CD workflows
- REST and GraphQL APIs, SQL and NoSQL databases
- Container tools, cloud platforms, and observability basics
When companies hire
Companies bring in freelance software developers when a product team needs extra build capacity, a specialist for a specific stack, or help with a blocked release. This is common for platform upgrades, app rebuilds, MVPs, migration work, and short-term support on critical systems.
In Hamburg, demand often comes from digital product teams, logistics firms, media companies, and industrial businesses that need strong technical delivery and clear communication. Some projects are fully remote; others need on-site sessions for planning, handover, or sensitive system access.
What good looks like
A strong software developer does more than write code. They ask the right questions, make sensible trade-offs, and keep the scope under control. They document decisions clearly so other engineers can continue the work without friction.
- Understands the product goal, not just the ticket
- Delivers working code that is readable and testable
- Spots edge cases before they become incidents
- Communicates risks, blockers, and next steps early
- Collaborates well with developers, QA, and stakeholders
Tools and stacks
The right stack depends on the project, but many software developers work across modern web frameworks, mobile frameworks, backend services, cloud infrastructure, and database layers. They may also support DevOps tasks, automation scripts, or data-heavy applications.
The best freelancers are comfortable entering an existing setup, understanding the codebase quickly, and making changes without breaking the system. That is especially useful when a team needs help in Hamburg but wants the flexibility of remote delivery.
Freelance fit
Freelance software developers are a good fit when the need is project-based, urgent, or tied to a specific technology. They help companies move faster without waiting for a permanent hire.
They are especially useful when you need someone who can join an existing team, work from a clear brief, and deliver maintainable code with limited onboarding. That makes them a practical choice for product launches, feature surges, and rescue work on stalled development.
Meet FRATCH Software Developers
Daniel Sedlack
Senior Software Engineer
Last position:
Senior Software Engineer at energielenker solutions GmbH
- Designed and implemented a Python-based ETL pipeline with the Dagster framework to transform raw energy data from heterogeneous sources using InfluxDB and visualizations in Grafana
- Defined time-based and dependency-based jobs
- Deployed to managed Kubernetes clusters using Helm
- Integrated InfluxDB Cloud
- Prepared data for use in Grafana, including cleaning, normalization, and time-based resampling in Python
- Developed dashboards and visualizations in Grafana
- Developed unit tests with mocking using pytest
- Set up a CI/CD pipeline in GitLab
Technologies: Python, Dagster, InfluxDB, Grafana, pandas, pytest, REST, CI/CD, GitLab, Container, Kubernetes, Helm, Docker, Cloud
Thorsten Boock
Senior Software Engineer
Last position:
Senior Backend Engineer at VTG Rail Europe
traigo is VTG's digital rail logistics and fleet management platform. It processes large volumes of telemetry, mileage, geofence, sensor and wagon-movement events in near real time and provides operational services for rail logistics customers across Europe.
As part of Team Customer Selfcare, I worked on the design, implementation, optimisation and operation of large-scale backend services and event-driven processing pipelines — covering both feature development and operational ownership of business-critical production systems. I also regularly acted as first responder for production incidents, data inconsistencies and performance investigations across multiple distributed services.
- Design and implementation of event-driven backend services.
- Migration and replacement of legacy processing pipelines.
- Development of replay / rebuild mechanisms for large event datasets.
- High-throughput asynchronous event processing on SNS / SQS.
- Database and query optimisation for PostgreSQL and DynamoDB.
- Design of scalable read / write models and aggregation pipelines.
- Production troubleshooting and operational support.
- Performance tuning and infrastructure scaling.
- Design and stabilisation of integration and system tests.
- Technical concepts, architecture documentation, and cross-team collaboration.
- Support the further development of existing GitLab CI/CD pipelines
Geofence & Wagon Stay Processing
- Algorithm to detect vehicles within geofences (entry, exit, dwell time).
- Event sourcing with guaranteed chronological order within the affected time window.
- Refactored geofence event and wagon-stay processing logic for performance.
- Resolved race conditions and event-ordering problems in distributed services; server-side filtering, aggregation and optimised query pipelines.
- Repair and replay tooling for corrupted or inconsistent movement data.
Fleet Metadata & Mileage
- Modernised the service; migrated storage from DynamoDB to PostgreSQL to improve traceability and accelerate new features.
- Scalable mileage aggregation and replay mechanisms.
- Read / write models and optimised queries for high-volume mileage calculations.
Sensor & Telematics Integration
- Integrated telemetry and sensor processing pipelines.
- Snapshot and state-calculation logic for sensor systems.
- APIs and persistence models for wagon sensor data; data-quality improvements.
- Further development of a service using gRPC for intra-service communication.
Movement Segment Processing & Routing
- Migrated services to new movement-segment event streams.
- Built replay and rebuild tooling for segment correction.
- Optimised throughput and reliability for high-volume event processing.
Condition Monitoring & Wagon Analytics
- APIs and backend services for wagon condition monitoring.
- Brake-wear prediction processing and wagon analytics functionality.
- PostgreSQL views and optimised query models for operational dashboards.
Operational Reliability - First Responder
- Investigated production incidents and distributed-system failures; DLQ analysis, replay and operational recovery.
- Tuned database performance and AWS infrastructure under production load.
- Improved observability, monitoring and operational tooling.
- Supported rollout strategies, monitoring and post-deployment stabilisation.
Rizwan Bashir
Software Developer/Database/DevOps
Last position:
Software Developer/Database/DevOps at Sutor Bank
- Migration and maintenance of a legacy system to the latest version of .NET for the asset management system
- Design and implementation of tests
- Creation of deployment pipelines and documentation
- Further development and implementation of change requests
- Technologies: C#, ASP.NET, Unit of Work, IOC, Three tier architecture, Entity Framework Core, DB First, Web API, Swagger, Open API, Monolith, Python, Oracle, Azure DevOps, GIT, xUnit, NSubstitute
- Methods: Agile development using Scrum
Florian Wede
Software Engineer
Last position:
Software Engineer at micimo GmbH
- Developing a professional scheduler for organizations with specific detailed requirements
- Evaluating different existing software solutions
- Creating a list of technical requirements
- Implementing these requirements
- Selected technologies: WebDAV, CalDAV, Rust, Baikal, OAuth, Keycloak
Rainer Diekmann
Enterprise Architecture Management / Backend Software Developer
Last position:
Enterprise Architecture Management / Backend Software Developer at Hamburg Police
- Several projects in a police context
- Model and document police procedures/projects with ArchiMate (as-is/to-be) in the context of P20 (Federal Criminal Police Office)
- Create software architectures with microservices
- POC development with Spring Boot/Docker/Kubernetes
- Project size: 10 people
- Enterprise architecture management with TOGAF and ArchiMate
- Backend software development with Spring Boot
- DevOps with Kubernetes
- Implemented using: Java 17/21, Spring Boot 3, P20 architecture, TOGAF, ArchiMate
Özgür Ertekin
Senior Software Developer
Last position:
Senior Software Developer at Cubic Transportation Systems
- Designed, implemented, and deployed two new microservice components, enabling new business functionalities and supporting regulatory compliance for enterprise clients.
- Ensured business continuity and system reliability within a high-transaction, microservice-based environment, taking ownership of backend systems under dynamic business conditions.
- Identified and refactored inefficient implementations, applying cost-benefit analysis to optimize performance, maintainability, and code quality.
Niels Majer
Senior Software Developer
Last position:
Senior Software Developer at Gruner + Jahr Deutschland GmbH
- Company in media and publishing
- Process automation and system integration
- Implementation of a system for automatic parking space booking
- Development of new infrastructure-as-code solutions with AWS CDK
- Creation of CI/CD pipelines in GitLab
- Migration of CloudFormation templates to AWS CDK
- Provision of data for business intelligence
- Further development of existing microservices
- Technologies: Java, Spring Boot, Spring Security, Python, Amazon AWS (CDK, API Gateway, Cognito, SQS, S3, SNS, Lambda, DynamoDB, IAM, CloudWatch, EC2, VPC, Route53), Google Cloud Storage, Camunda Cloud, Apache Camel, Docker, Kubernetes, Rancher, Redis, Micrometer, Splunk, Microsoft Power Automate, JUnit, Wiremock, Mockito, GitLab CI/CD
- Methods: Kanban, CI/CD, Pair Programming, TDD, Clean Code
Marian Gaebler
Senior Software Engineer
Last position:
Senior Software Engineer at B&P Bergmannpartners
- Full-stack development of a customizable SaaS platform for the real estate industry
- Conducting domain discovery to gather business requirements and derive technical specifications
- Designing and implementing core features with a Remix MVC architecture using TypeScript, Node.js, and PostgreSQL
- Focusing on usability, extensibility, and high scalability of the platform
Florian Fittkau
Solution Architect with Developer Focus
Last position:
Solution Architect with Developer Focus at SymFinIT Solutions GmbH
- Further development of a finance layer for subscription and one-time purchase billing and accounting.
- Technologies: Kotlin, AWS (SQS, S3, ElastiCache, Aurora), React, TypeScript, Coroutines, IntelliJ IDEA, Spring (Boot, Data, WebFlux), JUnit, Testcontainers, Cucumber, Liquibase, PostgreSQL, Webservices (REST), R2DBC, OpenAPI 3, Gradle, GIT, Docker, Netty, GitHub Actions, Jira/Confluence, arc42
Holger Dettmar
Software Developer
Last position:
Software Developer
- Gained familiarity with complex legacy software for controlling central ship systems (Ada, Java, C++).
- Implemented tests to identify memory leaks.
- Refactored existing project content and tests to object-oriented standards.
- Identified and fixed bugs in existing distributed Java and C++ applications on a DONAR/CORBA network.
- Products: Squish, NetBeans, MKS Integrity, DONAR, CORBA, DOORS, Windchill.
- Skills: Python, Java, Linux, C++, Ada.
Maciej Wilanowski
Senior Software Engineer
Last position:
Senior Software Engineer at EQS Group GmbH
- Further development of the compliance products
- Role responsibility as a Senior Software Engineer
- Team size: 5 - 15 people
- Tools: TypeScript, Angular 18, Node.js, Nest.js, AWS, Kubernetes/Helm Charts/Docker, GitLab (CD/CI), Elasticsearch, MySQL, OpenAI, Java, RabbitMQ
Sven Busse
Frontend Developer
Last position:
Frontend Developer at TQGG
- Reimplementation of the ESN.com online shop with Shopify's Hydrogen and Remix
- Headless CMS Contentful integration via GraphQL
Mark Plaatsman
Full-Stack Software Developer, Product Data Import
Last position:
Full-Stack Software Developer, Product Data Import at Otto (GmbH & Co KG)
- Manage and operate the product data import services for the Otto merchant
- Enhance and maintain the backend systems
- Optimize and maintain AWS infrastructure
- Build a new product data import API
- Design and plan stories and features
- Conduct code reviews to ensure code quality and best practices
- Analyze and fix bugs
- Technologies: Java, Spring Boot, Kafka, AWS, Fargate, Terraform, MongoDB, Mongo Atlas, OpenAPI, GitHub, GitHub Actions, GitHub Copilot, Akhq, Debezium, JUnit, Test Containers, Hexagonal Architecture
Bharathi Vanganuru
Senior Software Engineer (Individual Contributor)
Last position:
Senior Software Engineer (Individual Contributor) at European XFEL
- Electronic logbook app developed for research centers to maintain their investigations.
- Emphasizes user-driven organization of communication: experiment groups can configure information structure and notifications, while principal investigators maintain full access control.
- Real-time integration with the facility’s metadata catalogue, control system Karabo, and data analysis tool enables the automatic logging of key events, complemented by manual entries as needed.
Christian Hartmann
Lead Developer / AI Engineer
Last position:
Software Developer / Lead Developer at dpa (Deutsche Presse Agentur GmbH)
- Contributed to the development of the Rubix editorial system
- Implemented various microservices based on Java, AWS S3, AWS SQS, AWS SNS, and Spring Boot, deployed to AWS ECS and AWS Fargate
- Designed and developed AWS Lambdas using TypeScript
- Used PostgreSQL in an AWS RDS Aurora cluster and AWS DynamoDB
- Implemented continuous deployment with GitLab pipelines
- Built an Infrastructure as Code environment with AWS CDK
- Set up and maintained a monitoring platform using AWS CloudWatch
- Developed various frontend components with Vue.js
- Designed the microservice architecture applying Domain Driven Design and GraphQL interfaces
Discover over 15,000 top freelancers
Software Developers statistics
Typical experience
18 years
Average project duration
2.1 years
Certifications per freelancer
2
Top business areas
Information Technology, Product Development, Quality Assurance
Top industries
Information Technology, Banking and Finance, Manufacturing
Most common languages
German, English, Spanish
Bachelor's degree or higher
84%
Master's degree or higher
63%
Doctorate
21%
Salary / 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. Actual rates may vary depending on seniority level, experience, skill specialization, project complexity, and engagement length.
Average rates for Software Developers & Seniority distribution
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.
Actual rates may vary depending on seniority level, experience, skill specialization, project complexity, and engagement length.
Frequently Asked Questions
Need more info? We have all the details about FRATCH
A Software Developer builds or improves software based on product and technical requirements. That can include new features, APIs, integrations, bug fixes, refactoring, and deployment support. On freelance projects, the focus is usually on delivering clean code and moving a specific system forward.
Look for strong coding ability, debugging skill, testing habits, and solid Git workflow. A good software developer also understands databases, APIs, and how to work inside an existing codebase. For many projects, domain knowledge and clear communication matter as much as the programming language.
In practice, these titles often overlap, and companies use them differently. A Software Developer usually focuses on building features and solving product problems in code, while “software engineer” can imply a broader systems or architecture view. “Programmer” is sometimes used for the same work, but it can sound narrower and more code-only.
Freelance software developers are a good choice when the work is tied to a project, a migration, or a temporary capacity gap. They are also useful when you need a specialist for a specific stack and do not want a long hiring cycle. For urgent delivery, a freelancer can join and contribute much faster than a permanent hire.
Hamburg companies often hire developers for digital products, logistics software, media tools, and internal business systems. The city’s mix of established industry and product companies creates demand for backend work, frontends, platform updates, and system integrations. Some clients prefer on-site workshops in Hamburg, while the build work itself can often be done remotely.
Ask for examples of code they shipped, problems they fixed, and trade-offs they made. A strong software developer can explain their decisions clearly, write maintainable code, and show they can work with an existing team. Good signs are clean repository habits, careful testing, and a practical approach to scope.
Yes, if they are used to reading code they did not write and working with agreed processes. The best freelancers adapt to your tooling, code review rules, and release flow quickly. They should reduce pressure on the team, not create extra coordination work.
Share the system overview, code repository access, tech stack, and the exact outcome you want. A Software Developer can move faster when the brief includes priorities, constraints, and who signs off on the work. If the project touches sensitive systems, plan for onboarding and access control early.
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
