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Job Type: Umbraco Full Stack Developer (Permanent / Full Time)
Location: Southampton (United Kingdom)
Salary: £30000-40000 (TBA) Per Annum

Date: 30/06/2022


We're looking for a full time UK or Europe based developer to join our team building awesome websites, systems and tools for theme parks, zoos and attractions.

Company & Job Specifics:

We need help on a mix of existing Umbraco clients (from V7 up) as well as new site builds, and help to create our new LOOP online platform for attractions. 

Key Responsibilities

  • Help code and build Semantic client websites, our LOOP platform and modules/integrations as needed.
  • Help ensure websites stay up-to-date, fast and are free of technical issues
  • Supporting the team and clients with their technical needs and working with the PM/AM team to follow up
  • Ensure that all build work done on the client websites follows any specification
  • You’ll be responsible for checking everything you’ve built in a variety of browsers works well across the standard Semantic support browser list, including ensuring that work passed to the next team member is bug free
  • Monthly monitoring of each of the client websites including error logs, security checks, hosting checks, broken links and any issues with hacking or bots on a site
  • Ensure that client websites are up to date with the latest software and patches.
  • Be proactive in learning about all aspects of websites, coding, infrastructure and potential new systems/opportunities
  • Be responsive/proactive to both the clients and the internal team, enabling fast turnaround of issues & challenges
  • Always trying to find ways to delight the clients or team members, and having fun!

Perks include: 

  • Work from home / fully remote, or option to work in the office
  • Flexible working hours, long weekends and time to unwind
  • 20 days holiday + Bank Holidays + Christmas Break
  • FREE day off on your birthday
  • Extra day holiday per year as a Semantian (up to 30 days total + Bank Holidays + Christmas)
  • Training & opportunities for personal development and growth
  • Fun clients and team to work with
  • Quarterly team days and activities

Candidate Requirements:

Must be UK or Europe based, with great communication skills for UK/English-based clients.

Essential Skills & Experience

  • ASP.NET coding experience, including module/feature development, databases, APIs and integrations
  • Ideally familiar with building websites in Umbraco
  • Skilled in some (or all) of the following; C#, .NET, Rest APIs, SQL, HTML/CSS, JavaScript, Git, Agile Environment
  • Understanding of HTML5, CSS/SASS and JavaScript
  • Experience in responsive design and mobile web development
  • Understanding of usability, web accessibility and cross-browser/platform issues
  • Strong verbal and written communication ability
  • Proactive approach to your task and time management as part of a team
  • You’ll have strong expertise in the following tools which we use at Semantic - eg. Visual Studio, Git, DevOps


  • Agency experience
  • Experience developing and maintaining a software platform over 3 - 5 years.
  • Knowledge payment systems integration
  • Error handling and automated test procedures
  • Security knowledge and best practices
  • Attraction or marketing awareness
  • Client management or direct client contact/communication experience
  • Commercial awareness

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