# Competences — user interface developer

Source: ESCO v1.2.1 occupation-skill relations (http://data.europa.eu/esco/occupation/866c7813-2c03-47d7-9bdc-192cfbace57c).

## Essential

- **analyse software specifications** (skill/competence)
- **computer programming** (knowledge)
- **design graphics** (skill/competence)
- **design user interface** (skill/competence)
- **develop software prototype** (skill/competence)
- **draw design sketches** (skill/competence)
- **graphics editor software** (knowledge)
- **integrated development environment software** (knowledge)
- **interpret technical texts** (skill/competence)
- **software UI design patterns** (knowledge)
- **style sheet languages** (knowledge)
- **use an application-specific interface** (skill/competence)
- **use methodologies for user-centered design** (skill/competence)
- **use software design patterns** (skill/competence)
- **use software libraries** (skill/competence)
- **web programming** (knowledge)
- **World Wide Web Consortium standards** (knowledge)

## Optional

- ABAP (knowledge)
- Adobe Illustrator (knowledge)
- Adobe Photoshop (knowledge)
- AJAX (knowledge)
- Ajax Framework (knowledge)
- Ansible (knowledge)
- Apache Maven (knowledge)
- APL (knowledge)
- ASP.NET (knowledge)
- Assembly (computer programming) (knowledge)
- augmented reality (knowledge)
- C# (knowledge)
- C++ (knowledge)
- COBOL (knowledge)
- CoffeeScript (knowledge)
- Common Lisp (knowledge)
- create flowchart diagram (skill/competence)
- CSS (knowledge)
- debug software (skill/competence)
- design interaction model (skill/competence)
- Drupal (knowledge)
- Eclipse (integrated development environment software) (knowledge)
- Erlang (knowledge)
- GIMP (graphics editor software) (knowledge)
- Groovy (knowledge)
- Haskell (knowledge)
- human-computer interaction (knowledge)
- ICT debugging tools (knowledge)
- ICT project management (knowledge)
- Java (computer programming) (knowledge)
- JavaScript (knowledge)
- JavaScript Framework (knowledge)
- Jenkins (tools for software configuration management) (knowledge)
- JSSS (knowledge)
- KDevelop (knowledge)
- LESS (knowledge)
- Lisp (knowledge)
- MATLAB (knowledge)
- Microsoft Visio (knowledge)
- Microsoft Visual C++ (knowledge)
- ML (computer programming) (knowledge)
- NoSQL (knowledge)
- Objective-C (knowledge)
- OpenEdge Advanced Business Language (knowledge)
- Pascal (computer programming) (knowledge)
- Perl (knowledge)
- PHP (knowledge)
- Prolog (computer programming) (knowledge)
- Puppet (tools for software configuration management) (knowledge)
- Python (computer programming) (knowledge)
- R (knowledge)
- Ruby (computer programming) (knowledge)
- Salt (tools for software configuration management) (knowledge)
- SAP R3 (knowledge)
- SAS language (knowledge)
- Sass (knowledge)
- Scala (knowledge)
- Scratch (computer programming) (knowledge)
- screen reader (knowledge)
- SketchBook Pro (knowledge)
- Smalltalk (computer programming) (knowledge)
- software interaction design (knowledge)
- STAF (knowledge)
- Swift (computer programming) (knowledge)
- Synfig (knowledge)
- tools for software configuration management (knowledge)
- TypeScript (knowledge)
- use automatic programming (skill/competence)
- use concurrent programming (skill/competence)
- use functional programming (skill/competence)
- use logic programming (skill/competence)
- use markup languages (skill/competence)
- use object-oriented programming (skill/competence)
- use query languages (skill/competence)
- use scripting programming (skill/competence)
- utilise computer-aided software engineering tools (skill/competence)
- Vagrant (knowledge)
- VBScript (knowledge)
- Visual Basic (knowledge)
- WordPress (knowledge)
- Xcode (knowledge)

<!-- market-evidence -->

## Market evidence (job-ad analysis, 24 ads, as of 2026-07-20)

Share of analyzed job ads mentioning the item (threshold ≥ 20 %). Source: JSearch/Adzuna APIs.

### Hard skills

- api integration — **25 %**
- user interface design — **25 %**
- web application development — **21 %**
- ui design — **17 %**
- software development — **17 %**
- front-end development — **17 %**

### Methods

- Agile — **17 %**

### Responsibilities

- performance optimization — **17 %**

<!-- market-evidence -->