Senior API Technical Writer


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As a member of the API writing team in the Product department, the Senior API Technical Writer will create content for the HORISEN products customers and integration partners, while also shaping release information content, corresponding directly with the HORISEN CPO.
Your audience will include a variety of external customers in the telecommunication Industry and partners who are building innovative solutions that work and integrate with the HORISEN Platform. By documenting our platform, API, and SDKs, you’ll help developers extend the HORISEN Platform’s core functionality and integrate other systems with financial data and protocols in the HORISEN Platform.

The Senior API Writer will be customer-oriented, with a proven ability to write for a developer audience. Your focus will be on determining how to best support a developer’s ability to self-service their information needs, using a mixture of material ranging from “getting started” to detailed API reference. You’ll work with members of cross-functional teams, where you’ll use your background in content and writing API documentation to contribute to the success of the HORISEN.


  • 4+ years of technical writing experience
  • Minimum of 2 years writing for a developer audience
  • Direct experience documenting APIs; experience with REST APIs a must
  • Understanding of Web services technologies and HTTP request-response protocol
  • “Hands-on” attitude and passion for technology, including comfort with basic scripting
  • Ability to create basic code examples in one or more current programming/scripting languages
  • Ability to read and understand JavaScript and JSON
  • Ability to create content plans and schedules, meeting milestones and deadlines
  • Experience authoring in a variety of tools: Jekyll (markdown)
  • Swagger, online help tools
  • Strong portfolio of API reference and developer guide writing samples
  • Financial application and/or Telecommunication/Messaging knowledge is a plus
  • Excellent English Skills

Your area of responsibility

  • Create and maintain reference information for API functions and methods
  • Help drive content strategy for developer information at HORISEN
  • Create content that guides developers on getting started, sending and receiving requests between HORISEN Products and external systems, and extending the HORISEN application through our platform
  • Research material through a combination of interviews with subject matter experts and hands-on experience with various APIs, SDKs, and development environments
  • Ensure that API and HORISEN platform documentation is kept current with release updates
  • Publish content, ensuring that material is accessible and available to developers
  • Gathering and writing release notes for HORISEN products (application and API)

What you will find with us

At HORISEN we build a workplace that supports, inspires, and encourages our colleagues. We foster a work environment where people are motivated to give their best and feel good about what they do.


Dynamic work in a company with more than 20 years of experience in a future-oriented industry.


A powerful mixture of highly experienced professionals and young team members who are motivated, open-minded, and easy to cooperate with.


A supportive, non-toxic environment with a safe space to share your ideas and opinions


A modern working environment with everyday refreshments and a good mood


Opportunity to grow under the mentorship of colleagues with extensive experience and to make a personal contribution.


A competitive salary with performance-related improvements and great development opportunities


Chance to contribute to cutting-edge messaging technology development, expand knowledge and master your professional skills.

Social benefits

Private medical insurance including regular check-ups, access to private hospitals etc., for employees’ well-being and self-care


HORISEN is an award-winning technology software house for retail and wholesale messaging technology. We offer a wide variety of business messaging solutions – feature-rich, carrier-neutral, and sales-driven to messaging companies. With more than two decades of experience and passion for software development, we are revolutionizing messaging business by developing at the edge of technological possibilities.

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Position: Senior API Technical Writer

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