REST API Experts in Basel
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Meet FRATCH Experts in Basel, who have recently used REST API
Yassin B.
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.
Andreas H.
Last position:
Technical Project Lead Telematics Systems, Electrical Engineer at DB InfraGo
- Setup of a comprehensive Shift Left DevOps architecture for end-to-end (E2E) system tests of 240+ applications
- Implementation of the Shift Left strategy for DevOps in the area of E2E system tests to ensure software quality at an early stage
- Development and maintenance of complex telematics solutions for real-time collection and analysis of vehicle data to systematically optimize fleet availability
- Focus on reverse engineering of existing systems, development of scalable dashboards, and integration and analysis of communication protocols (e.g. CAN, MQTT, REST)
- Design and operation of automated test systems, coordination of suppliers, and technical implementation based on functional and non-functional requirements at the interface between embedded development, data analysis, and system integration
Christoph W.
Last position:
System Architect / System Engineer / Programmer at Deutsche Vermögensberatung (DVAG)
- Create requirements for the modularization of the promotion forecast.
- Set up and expand the various competitions for 2024.
- Customize and test the CICS dialog.
- Create various reports for the department using SQL.
- Implement and test new requirements in batch processes with IWS.
- Update documentation for the new requirements.
- Provide on-call support for daily and monthly production.
- Technologies used: SCRUM, Jira, Confluence, Windows 11, Unix, Enterprise Developer, z/OS, GIT, Mineral, Moped, IWS/TWS, JES, COBOL, CICS, DB2, SQL, Rocket, FortiClient, Citrix.
Sibylle H.
Last position:
SAP ABAP-OO Development (cross-module) at Asendia
- Creation of interfaces for transferring SD orders and customer master data (including various protocols and the ability to handle erroneous data)
- Analysis and adjustment of existing programs due to infrastructure change
- SOAP and REST API for creating customer master data from SugarCRM
- REST APIs in JSON (SD orders, invoices, payments, PDF forms)
- Log program for REST APIs
- Creation of various invoice forms in 8 languages including document links, email delivery, PDF generation
- Provision of data for the data warehouse
- Various user exits and enhancements in SD and FI
- Intercompany sales order creation, program for creating credit memos (uploads from Excel and from the server)
- Reports (VAT, sales orders, invoices)
- Correction program for CO data
- Support for various interfaces, notes, etc.
- Enhancement for IDoc INVOIC02
- Upload program for XML files (Rydoo) to post cash receipts into FI (FB01)
- Creation of dunning forms in various languages (Smartforms and Adobe including email delivery)
- Account statement program (ALV displaying postings, sending to debtors via email using Smartform as PDF)
Martin G.
Last position:
IT Project Manager ALV-eGOV, Deputy Head, Group Leader, Business Analyst, Requirements Engineer at SECO
- Planning, implementation, and rollout of 7 eGov services for companies and job seekers for the Unemployment Insurance Fund (ALV)
Discover over 15,000 top freelancers
Statistics of experts using REST API
Aggregated from the professional profiles of matched freelancers.
Experience
25 years (Switzerland: 22 years)
Position duration
2.7 years (Switzerland: 1.9 years)
Positions per freelancer
17 (Switzerland: 14)
Top business areas
Information Technology, Product Development, Project Management
Top industries
Information Technology, Automotive, Banking and Finance
Certification focus areas
Information Technology, Quality Assurance, Product Development
Bachelor's degree or higher
80% (Switzerland: 91%)
Master's degree or higher
60%
Certifications per freelancer
6 (Switzerland: 4)
Most common languages
German, English, French
Speak two or more languages
100% (Switzerland: 98%)
Based on our profile pool as of 16 Oct 2026.
Daily rate distribution
The chart shows how the daily rates of experts in this technology in Basel are distributed, based on recent contracts on our platform. Each bar covers a rate range — its height shows the share of experts charging within that range.
Average rates of experts in Basel 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 16 Oct 2026. Actual rates may vary depending on seniority level, experience, skill specialization, project complexity, and engagement length.
REST API experts industry focus
See which industries our matched freelancers work in most often — every figure is calculated live from the freelancers on FRATCH.
- Information Technology (100%)
- Automotive (60%)
- Banking and Finance (60%)
- Manufacturing (60%)
- Government and Administration (60%)
- Energy (40%)
- Food and Beverage (40%)
- Healthcare (40%)
Please note that freelancers can work across multiple industries, so percentages overlap.
About the technology
What REST APIs do
A REST API is an HTTP interface that lets software exchange data through clearly defined resources and operations. REST, short for Representational State Transfer, commonly uses methods such as GET, POST, PUT, PATCH and DELETE with JSON responses. Companies use it to connect web applications, mobile apps, internal systems and external services.
Systems they connect
REST APIs sit between customer-facing products and the systems behind them. Typical work includes:
- Exposing product, customer, order and payment resources
- Connecting mobile and web applications to back-end services
- Integrating CRM, ERP, identity and payment systems
- Creating partner and public interfaces with controlled access
- Modernising older application interfaces without replacing every system
Ecosystem and tooling
Strong specialists work across HTTP, JSON, authentication and database boundaries. They may use OpenAPI or Swagger for contracts and documentation, Postman for exploration, and tools such as gateways, service meshes and API management layers for traffic control. Testing often includes contract, integration, load and security checks.
When companies need help
Freelance expertise is useful when an API must be designed before implementation, stabilised during a migration or made safe for external consumers. Basel companies in life sciences, financial services, logistics and other regulated fields may also need careful access control, auditability and dependable integrations. Remote work is practical when documentation, environments and review processes are well organised.
What good delivery includes
A capable professional starts with domain resources and consumer needs rather than endpoints alone. They define consistent naming, status codes, pagination, validation and error responses, then document decisions in an understandable contract. They also consider backward compatibility, observability, rate limits and ownership after release.
Choosing the right specialist
Look for evidence of interfaces that real consumers use, not only prototypes. Ask how the specialist handles versioning, authentication, sensitive data, failure recovery and contract changes. Practical experience with your application stack, cloud environment and collaboration language can matter as much as REST knowledge, especially when Basel-based teams need close coordination with remote contributors.
Frequently asked questions
Key details about REST API, drawn from the questions we get asked most.
Companies use REST APIs to let applications exchange resources over HTTP. Common examples include mobile back ends, web applications, partner integrations, payment flows, identity services and data access between internal systems.
REST API design usually exposes resources through predictable HTTP endpoints and works well for broad integrations and cacheable requests. GraphQL gives consumers more control over response shape, while SOAP offers stricter message standards that may still suit specialised enterprise environments.
A strong REST API specialist should understand HTTP semantics, JSON, databases, authentication and automated testing. OpenAPI, API gateways, cloud deployment, observability and secure handling of personal or regulated data are also valuable adjacent skills.
The right level depends on scope, risk and the number of consuming systems. A simple internal interface may need focused implementation support, while a public or regulated REST API requires proven judgement around contracts, security, compatibility, monitoring and incident recovery.
Yes, REST API work is often well suited to remote collaboration when teams share API contracts, test environments and clear review routines. Basel-based companies may choose occasional on-site sessions for domain workshops, while daily implementation and documentation can remain remote.
A REST API contract should define resources, paths, methods, request and response schemas, status codes, authentication rules and error formats. OpenAPI can make these decisions visible to product, front-end, quality and external integration teams before code is released.
Review examples of REST API work and ask how consumers were supported after launch. Look for consistent resource modelling, useful documentation, automated tests, secure defaults, backward-compatible change management and clear answers about failures and observability.
REST API remains a practical choice when many consumers need a familiar HTTP interface and independent services must exchange data predictably. The best option depends on payload shape, latency, streaming needs, governance and the capabilities of the systems being connected.
The average hourly rate of freelancers in Basel, Switzerland who have used REST API in their recent projects is 120 €, which corresponds to a daily rate of about 961 € based on an 8-hour working day.
Of the freelancers in Basel, Switzerland who have used REST API in their recent projects, 80% hold at least a Bachelor's degree and 60% hold at least a Master's degree.
On average, freelancers in Basel, Switzerland who have used REST API in their recent projects have 25 years of professional experience, with a single engagement typically lasting around 2.7 years.
The most common languages among freelancers in Basel, Switzerland who have used REST API in their recent projects are German (100%), English (100%), and French (80%).
The most common industries among freelancers in Basel, Switzerland who have used REST API in their recent projects are Information Technology (100%), Automotive (60%), and Banking and Finance (60%).
The most common business areas among freelancers in Basel, Switzerland who have used REST API in their recent projects are Information Technology (100%), Product Development (80%), and Project Management (80%).
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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