REST API Experts in Switzerland
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Meet FRATCH Experts in Switzerland, who have recently used REST API
Gwang Jin Kim
Last position:
Data Scientist / Applied AI, Automation & Data Systems Researcher at Independent
- Built and explored applied GenAI, RAG, GraphRAG, local LLM, agentic AI and document-intelligence prototypes for structured analysis, evidence extraction, semantic search, technical reasoning and decision-useful reporting
- Developed private local-LLM workflows and AI system patterns focused on privacy, reproducibility, reviewability, low-cost inference and practical user control
- Built reproducible Python/R workflows for data analysis, automation, API-driven tooling, validation logic, technical documentation and AI-assisted software development
- Designed workflows around explicit assumptions, traceable inputs, reviewable outputs and failure-mode awareness rather than black-box “looks good” demonstrations
- Supported RAHN AG in a chemical/regulatory environment with data extraction and processing around WERCS, a regulatory application for chemical product and compliance data
- Explored complex application/database schemas and wrote nested SQL queries to extract information for mixture calculations, component relationships, regulatory rules and reporting logic
- Continued hands-on development in Git/GitHub/GitLab/Bitbucket, Docker/Linux deployment patterns, REST/API workflows, error handling, technical writing and fast AI-assisted prototyping
- Built technical writing and documentation workflows that turn complex systems into clear runbooks, checklists, decision notes and user-facing explanations
Nikita Verkhoshintcev
Last position:
Salesforce Technical Architect at Fennia
- Designed and engineered a shared web component library for a customer portal serving 360,000+ private users and integrated the LWC framework with Storybook via Rollup.
- Resolved WCAG AA compliance issues to support strict accessibility requirements.
- Integrated legacy systems into a new portal via REST API to support existing products.
Urs Steger
Last position:
CargoMonitor App at MSR Electronics GmbH
MVP app for shock logger to monitor and analyze transport data via BLE as a Kotlin Multiplatform solution for Android and iOS.
Christoph Pardon
Last position:
ICT DevSecOps Engineer & Security Coordinator at Abraxas Informatik AG
- Interface role with the SOC team; improved incident response time by 45% through structured escalation processes and proactive security monitoring.
- Defined technical standards for a multi-tenant enterprise platform (10+ services), resulting in 30% shorter onboarding time for new clients in the public sector.
- Active knowledge transfer and mentoring of a 6-person team; increased team autonomy and established a sustainable engineering culture.
- Reduced time-to-market by 50% through CI/CD pipeline optimization and the introduction of self-service deployments.
- Stack: GitLab CI/CD, Kubernetes, Nexus, Harbor, ArgoCD, HashiCorp Vault, Grafana, Python, PostgreSQL, Java, Spring Boot, Flyway, Quarkus, JBoss, Loki, Go, Kafka, Kustomize, MongoDB
Osman Tartoussi
Last position:
Senior Developer and Consultant at Federal Office for IT and Telecommunications BIT
IT consulting, analysis, architecture design, new and further development, code review, test automation, continuous integration and continuous delivery in the backend and frontend area.
Technology stack:
JAVA 21
Spring Boot 3
Spring Framework 6
Spring Rest
Spring Data
JPA
Postgres
Aurora Database
Typescript
OWASP
Renovatebot
Sonarqube
Prometheus
Grafana
Spring Security
Single SignOn
Keycloak
Angular 19
NgRx Redux
AWS ECS
AWS Cloudwatch
Terraform
Spacelift
GitOps
Docker
Junit
Maven
Jenkins Pipeline
GitHub
BitBucket
Nexus
Kafka
Conduktor
Kafdrop
OpenApi
Swagger
Scrum
SAFe
Jira
Confluence
Detlef Witt
Last position:
Sourcing Manager at BEDAG Informatik AG
- Solely responsible for managing procurement operations
- WTO tenders in an open procedure
- Invitation process
- Direct call-offs and mini-tenders from framework contracts
- Simap.ch, SuisseOffer.ch, Confluence, Jira, Microsoft 365 applications
Robin Ochsner
Last position:
Co-Founder & AI Solutions Architect at airdys
- Product strategy, architecture, and technical co-direction
- AI workshops, client onboarding and go-to-market activities
- Design and implementation of AI architectures (LLMs, RAG, MCP, agents, voice, automation)
- Hands-on development of prototypes and production-ready AI integrations
- Consulting clients on AI adoption, workflows, and integration into existing infrastructure
- Collaboration with co-founders on strategic direction
- Collaboration in sales and customer acquisition
Tools and Technologies: OpenAI, Anthropic, Azure, Vercel AI SDK, RAG (Retrieval-Augmented Generation), MCP (Model Context Protocol), FastAgent, VAPI, n8n, make.com, LibreChat, PostgreSQL, OpenAPI, Next.js, Vercel, Docker
Max Rosari
Last position:
ICT Solution Architect Senior at ewb, Energy, Water
- Questioning and discussion of technical requirements and coordination with the team
- Contributing to objectives of the Digital Transformation Services unit and implementation of objectives
- Analyzing, specifying, updating and delivering architecture models to implement digital solutions in line with business, data infrastructure and requirements
- Selecting suitable technical options for application design considering interoperability, reversibility, scalability, usability, accessibility and security and optimizing cost/quality ratio
- Creating and maintaining concept documents, architecture models and other technical documentation
- Reviewing services to be provided and other documents for solution development
- Collaborating with IT enterprise architect, business analyst, project manager, developers, testers and process owner in design and documentation of technical specifications for new and further developments
- Communicating and supporting concepts to relevant stakeholders
- Participating in enterprise architecture activities and ensuring compliance with principles, standards and guidelines
- Monitoring compliance with defined design at application, solution and enterprise level
- Developing and testing existing and new solutions as required
- Supporting and guiding development teams in implementation of new projects or maintenance of existing products, assuming product manager role if required
- Establishing and ensuring best practice in implementation, documentation, testing and packaging for distribution
- Contributing to handling of reported incidents and requests assigned to third level support and follow-up actions as required
Roland Arato
Last position:
Project Manager and Senior Business Analyst at Init Services GmbH
- Project management: Implementation of SAP & EBX integration for master and reference data management and led development of AI supported services for data management and privacy-oriented solutions
- Business analysis: Executed in-depth requirement gathering and data analyzes for MDM implementation, supported service integration using REST APIs to enhance service interoperability, led the requirement gathering, analysis, and implementation of agent-based AI services
- Technologies: SAP BP & FICO & MM, Tibco EBX, n8n, custom AI development in Java, Python, RDBMS, cloud
Daniel Schmidt
Last position:
Senior Manager at devpoint GmbH
- Design and co-implementation of an insolvency management platform in Germany for a client (based on an AI development tool)
- Concept, requirements engineering, and implementation support for a Dubai-based company to integrate processes into a CRM
- Business analysis and requirements engineering at Swisscom for integrations
- Integration of a new knowledge management system into the business processes at Swisscom AG – REST API definition
- Project manager, consultant, and sparring partner for the realignment/process digitalization at GIB Solutions AG
- Process designer and prototype for an AI-based real estate marketing system in Dubai
- Interim head of the ICT department at a telecom company, reorganizing and optimizing processes with a team of 5 at GIB Solutions AG
- Agile requirements engineer / external PO for a web-based solution for the German company DEHN AG
- Project management and consulting for the existing marketing and campaign planning solution at Swisscom AG
- Building the ALoHA nearshore offering at devpoint
Ahmed Rehman
Last position:
AI & Automation Engineer at Teosek GmbH
- Build prototypes, expand AI skills, and practical application in a startup context.
- Transition phase: further training in prompt engineering, APIs, AI, working on independent prototype projects, and collaborating at a friend's startup.
- Technologies: LangChain, REST, Python, Java, JS, TS, Node.
Peter Sacco
Last position:
Web Application Developer PHP / WordPress Plugin Development at Gemeinde Bauma
- Analysis, consulting, and development of a WordPress application for the digital processing and delivery of the Bauma chronicle archive
Patrick Riegler
Last position:
DevOps Engineer at Swisscard AECS AG
- PoC for various platform integration functionalities using Backstage and Crossplane
- Implementation of improvements of developer experience with Azure AVD and DevSpace
- Manage application deployment infrastructure on Kubernetes clusters
- Manage CI/CD platform
- Manage deployments into Kubernetes (Rancher and AKS) and into Azure
- Act as security champion of the DevOps team
- Manage vulnerabilities and support dev teams to manage third-party vulnerabilities using JFrog Xray
- Support building the platform team
- Manage infrastructure as code using Terraform and Atlantis
- Build and integrate a platform and IDP using Crossplane
Karim Ismail
Last position:
Test Engineer at Ixtrac AG for Swica
- Building a framework for automated website testing
- Testing, regression testing
- Defect management
- Release management, UAT, agile testing
- Feature discussions with business
- Test management
Yassin Ben Khalifa
Last position:
Senior Software Development Engineer in Test (SDET) at Schweizerweg Gmbh
- Designed and executed automated and manual test cases for REST APIs and UI workflows using Selenide, Selenium, and Postman.
- Developed and maintained Gatling-based performance tests for simulating user load and validating system responsiveness and stability under stress.
- Integrated test suites into CI/CD pipelines with Jenkins, enabling rapid and reliable delivery cycles.
- Employed Splunk, Grafana, and Prometheus to monitor logs, track metrics, and perform in-depth application performance monitoring (APM).
- Utilized Swagger for validating and documenting API contracts and ensuring consistency across environments.
- Created and managed isolated test environments using Docker, enabling reproducible and consistent test execution.
- Collaborated with cross-functional teams using Confluence, Jira, and Bitbucket for agile planning, documentation, and version control.
- Worked in a Java/Spring Boot tech stack, leveraging Maven for project build automation and IntelliJ IDEA for development and debugging.
Key Achievements:
- Built a reusable Selenide-based UI automation framework that reduced test creation time by over 50%.
- Automated end-to-end test scenarios for critical business workflows, increasing test coverage and release confidence.
- Designed a modular Gatling load testing framework, used for continuous performance benchmarking.
- Detected and resolved several critical production performance issues through proactive APM and stress testing.
Discover over 15,000 top freelancers
Statistics of experts using REST API
Aggregated from the professional profiles of matched freelancers.
Experience
22 years
Position duration
1.8 years
Positions per freelancer
14
Top business areas
Information Technology, Product Development, Quality Assurance
Top industries
Information Technology, Banking and Finance, Professional Services
Certification focus areas
Information Technology, Product Development, Project Management
Bachelor's degree or higher
91%
Master's degree or higher
56%
Doctorate
6%
Certifications per freelancer
4
Most common languages
German, English, French
Speak two or more languages
97%
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 Switzerland 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 Switzerland using REST API
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
REST basics
A REST API exposes data and actions through resource-based HTTP endpoints. It is used to connect front ends, mobile apps, partner systems, and internal services in a simple, predictable way. Strong work keeps requests clear, responses consistent, and errors easy to handle.
Where it fits
- Web and mobile backends
- Partner and public integrations
- Internal service-to-service communication
- Content, commerce, and workflow systems
REST is often chosen when teams need a stable interface that different clients can consume without tight coupling. In Switzerland, it is common in banking, insurance, logistics, and industrial software where clear contracts matter.
Tooling and style
Good specialists know HTTP methods, status codes, authentication, pagination, filtering, and versioning. They often work with OpenAPI, Swagger, Postman, cURL, and testing tools that document and validate the contract. They also think about caching, idempotency, and backward compatibility from the start.
What strong experts deliver
A solid professional writes endpoints that are easy to read and hard to misuse. They shape request and response models, protect sensitive data, handle validation and errors cleanly, and keep naming consistent across the API. The result is an interface other teams can trust.
Why companies bring in freelancers
Companies often need help when an existing REST API is messy, slow, or hard to extend. They also bring in specialists for new service design, third-party integrations, API reviews, or migration from older SOAP or RPC interfaces. Freelancers are useful when delivery must move quickly without adding permanent headcount.
Switzerland collaboration
Remote collaboration works well for most REST API work because the contract, test cases, and documentation travel easily. For Switzerland-based teams, bilingual or multilingual communication can matter when APIs support cross-border products or regulated environments. Strong freelancers are comfortable working with product, backend, and frontend specialists in short feedback loops.
Frequently asked questions
What clients ask us most about REST API — answered in short.
A REST API is used to let software systems exchange data through clear HTTP endpoints. Companies rely on it for web apps, mobile apps, partner connections, internal tools, and public developer interfaces. It is a practical fit when different clients need the same backend in a predictable way.
A REST API is usually simpler than SOAP and easier to understand for common web use cases. Compared with GraphQL, it is more resource-focused and often easier to cache, document, and secure in standard HTTP setups. The best choice depends on the shape of the data, the clients, and how stable the contract must be.
A strong REST API specialist should know HTTP methods, headers, status codes, authentication, pagination, filtering, and versioning. Practical experience with OpenAPI, Swagger, Postman, testing, and error handling matters just as much. Good communication is also important because API design is a shared contract.
A company usually needs REST API help when an interface is inconsistent, slow, hard to document, or difficult to extend. Outside specialists are also useful for greenfield design, third-party integrations, and migrations from SOAP or older custom interfaces. They can step in for a short review or a full delivery phase.
A REST API project can need anything from a focused review to a full redesign, depending on the scope. Small integrations may only need a specialist who can shape endpoints and tests, while larger systems need someone who understands versioning, security, and long-term maintainability. The key is proven delivery, not a fixed background.
Yes, REST API work is often well suited to remote collaboration because the main assets are specs, endpoint definitions, tests, and documentation. For teams in Switzerland, remote specialists can work smoothly as long as they are aligned on language, review cadence, and decision ownership. On-site time is usually only needed for workshops or sensitive coordination.
With REST API work, quality shows in clear resource design, consistent naming, proper status codes, and clean error responses. Look for specialists who think about backward compatibility, security, observability, and maintainable documentation. Good work is easy for other teams to use without extra explanation.
A REST API freelancer should ask who consumes the interface, what data must be exposed, and which systems already depend on it. They should also clarify authentication, versioning, error handling, and whether there is an OpenAPI contract or only informal expectations. Those answers reduce rework and keep delivery focused.
The average hourly rate of freelancers in Switzerland who have used REST API in their recent projects is 109 €, which corresponds to a daily rate of about 872 € based on an 8-hour working day.
Of the freelancers in Switzerland who have used REST API in their recent projects, 91% hold at least a Bachelor's degree, 56% hold at least a Master's degree, and 6% hold a doctorate.
On average, freelancers in Switzerland who have used REST API in their recent projects have 22 years of professional experience, with a single engagement typically lasting around 1.8 years.
The most common languages among freelancers in Switzerland who have used REST API in their recent projects are German (95%), English (95%), and French (41%).
The most common industries among freelancers in Switzerland who have used REST API in their recent projects are Information Technology (95%), Banking and Finance (72%), and Professional Services (49%).
The most common business areas among freelancers in Switzerland who have used REST API in their recent projects are Information Technology (100%), Product Development (87%), and Quality Assurance (62%).
Main locations of FRATCH Experts, who have recently used REST API
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.
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Philipp Thomaschewski
FRATCH CEO
