Senior Ui / Ux Designer – Mobile First

SIM2Serve (Pty) Ltd; Johannesburg; On-site; ZAR 300,000 - 400,000; Full time

Job summary

A leading company in travel connectivity seeks a Senior UI / UX Designer to create exceptional mobile-first interfaces. This role requires a strong portfolio showcasing end-to-end mobile design and proficiency in tools like Figma. Join a creative team focused on delivering intuitive user experiences and help shape a multi-million rand product.

Benefits

Collaborative in-office culture

Fast-paced creative team

Opportunity to shape user experiences

Qualifications

• Strong portfolio of mobile UI/UX design.
• Professional experience designing end-to-end mobile-first products.
• Expert-level proficiency in Figma, Adobe XD, or Sketch.

Responsibilities

• Design modern, intuitive mobile-first interfaces.
• Create wireframes, user flows, and high-fidelity prototypes.
• Collaborate with developers and product managers.

Skills

Mobile UI Design

User Experience (UX)

Prototyping

Communication

Tools

Figma

Adobe XD

Sketch

Job description

Senior UI / UX Designer – Mobile First (Office-Based Preferred, Remote Possible for Exceptional Candidates)

This is primarily an office-based role. However, if you meet all the key requirements, we may consider a remote arrangement.

Location : Johannesburg South (Meyersdal)
Employment Type : Full-time
Start Date : ASAP
Department : Product / Design
Eligibility : Only South African citizens will be considered for this role.

Only Apply If Your Portfolio Showcases Exceptional Mobile Interface Design

travSIM is investing over R7 million into the next generation of our digital platforms — and we're looking for a top-tier UI / UX Designer to help shape that vision. This is primarily an office-based role, but we may consider a remote arrangement for exceptional candidates.

Please Do Not Apply If :

• You do not have a mobile design portfolio
• You've never designed a full UI for a mobile app or mobile-first product
• You are not available to work on-site from our Johannesburg office (unless an exceptional remote fit)

Important Portfolio Requirement

We are specifically looking for a complete mobile app design project that shows your end-to-end thinking — from problem framing and wireframes to final UI. Applications that only include desktop work or polished visuals without UX context will not be considered. You will be asked to submit your portfolio or specific links to case studies or project files that clearly demonstrate :

• Mobile app interface design (not desktop web)
• Your UX process — including user flows, wireframes, and early-stage thinking
• High-fidelity visual / UI execution for mobile-first or responsive platforms

About travSIM

travSIM is a global leader in travel connectivity, offering trusted eSIM and SIM card solutions to travellers in over countries. As we scale our digital platforms, we're building premium, intuitive user experiences that are mobile-first, fast, and beautifully simple. We're investing over R7 million into this next-generation product — and only exceptional designers will be considered for this high-impact role.

Position Overview

We're looking for a sharp, detail-obsessed UI / UX Designer with a standout portfolio of mobile app design work. You should be confident designing complete user journeys, crafting crisp UI, and delivering production-ready work at speed.

Key Responsibilities

1. Design modern, intuitive mobile-first interfaces for a growing product
2. Create wireframes, user flows, high-fidelity prototypes, and scalable design systems (primarily using Figma)
3. Collaborate with developers and product managers to bring designs to life
4. Conduct user testing and refine designs based on feedback
5. Ensure all UI / UX deliverables are launch-ready, consistent, and visually polished
6. Uphold high standards of usability, clarity, and aesthetic quality

Required Qualifications

1. Only candidates with launch-ready or near-launch quality mobile design work will be considered
2. Strong portfolio of mobile UI / UX design — live apps preferred, polished mockups accepted
3. Professional experience designing end-to-end mobile-first products
4. Expert-level proficiency in Figma (preferred), Adobe XD, or Sketch
5. Availability to work full-time
6. Strategic and self-driven: you understand UX deeply, align design with business goals, and move fast without sacrificing quality
7. Excellent communication skills with the ability to clearly explain design decisions
8. South African Citizens Only (currently residing in South Africa)

Please note that this position is open only to South African citizens currently residing in South Africa. Applications from outside South Africa will not be considered.

Preferred Qualifications

1. Experience working on travel, fintech, or e-commerce platforms
2. Contributing to or maintaining a design system or component library
3. Exposure to responsive layout design for both mobile and desktop
4. Familiarity with basic product strategy and business logic

Why Join travSIM?

• Help shape a multi-million rand mobile product used by global travellers
• Join a fast-moving, product-focused, creative team
• See your work in action — fast
• Work in a collaborative, in-office culture where design truly matters
• Be part of a company where your ideas directly shape the user experience

This role is for exceptional designers only. If your portfolio isn't mobile-focused and doesn't demonstrate refined, launch-ready design work, this won't be a fit.