Senior React Lead

Smartek21, LLC; Pretoria; On-site; ZAR 700 000 - 900 000; Full time

Job summary

An innovative digital transformation leader is seeking a Senior React Consultant in Pretoria. The ideal candidate will have over 5 years of expertise in building production-grade React Native apps, strong JavaScript and TypeScript skills, and a passion for mentoring others. Responsibilities include delivering scalable solutions, designing application architectures, and ensuring quality through testing and CI/CD practices. Join a collaborative team dedicated to empowering organizations through data-centric solutions.

Qualifications

• 5+ years building and maintaining production-grade React Native apps.
• Advanced understanding of modern JavaScript and strong TypeScript habits.
• Comfortable debugging and optimizing across iOS and Android.
• Proven ability to design scalable, high-performing mobile solutions.
• Hands-on experience with Jest, automated testing, and deployment pipelines.
• Awareness of mobile security best practices and use of tools like Sentry or Crashlytics.
• Strong communicator who mentors others and drives engineering standards.

Responsibilities

• Design and deliver robust, scalable React and React Native solutions.
• Define and evolve application architectures for performance and maintainability.
• Support and guide engineers across teams to ensure engineering excellence.
• Set up testing pipelines and CI/CD automation.
• Collaborate with designers, delivery teams, and solution engineers.

Skills

React Native Expertise

JavaScript/TypeScript Skills

Native Know-How

Architecture & Performance

Testing & CI/CD

Security & Monitoring

Leadership

Job description

About the Role

At Retro Rabbit, we don’t just build apps; we create experiences that move industries forward. We’re looking for a Senior React Consultant who thrives at the intersection of technology, architecture, and mentorship. Someone who can shape scalable solutions, guide technical direction, and still roll up their sleeves to write clean, elegant code. If you’re passionate about pushing mobile and web boundaries, crafting seamless user experiences, and uplifting those around you, this might be your next chapter.

Key Responsibilities

• Lead by doing: Design and deliver robust, scalable React and React Native solutions in a collaborative, agile environment
• Architect with intent: Define and evolve application architectures that balance performance, maintainability, and innovation
• Mentor with purpose: Support and guide engineers across teams, ensuring engineering excellence becomes part of our culture
• Champion quality: Set up testing pipelines and CI/CD automation, and ensure apps perform beautifully under real-world conditions
• Collaborate widely: Partner with designers, delivery teams, and solution engineers to turn ambitious ideas into reliable, impactful products

What You Bring

• React Native Expertise: 5+ years building and maintaining production-grade RN apps
• JavaScript/TypeScript Skills: Advanced understanding of modern JS and strong TypeScript habits
• Native Know-How: Comfortable debugging and optimizing across iOS and Android
• Architecture & Performance: Proven ability to design scalable, high-performing mobile solutions
• Testing & CI/CD: Hands-on experience with Jest, automated testing, and deployment pipelines
• Security & Monitoring: Awareness of mobile security best practices and use of tools like Sentry or Crashlytics
• Leadership: Strong communicator who mentors others and drives engineering standards

Why Join Us

• A technical leader who drives best practices, mentors others, and raises the engineering bar
• A collaborator who communicates clearly across disciplines — from design to delivery
• A curious problem solver who enjoys balancing innovation with stability
• Experience in financial services or other high-regulation industries is a plus, but not essential; curiosity and craft matter more

Who We are...

SmarTek21, founded in 2006, is an innovative digital transformation leader dedicated to empowering organizations through design-led, data-centric solutions. We believe that exceptional user experiences and intelligent data-driven insights are pivotal in shaping the future of business. At the heart of our approach is Design-Led Engineering, where we combine strategic design principles with cutting‑edge technology to create tailored solutions that deliver significant business outcomes. Our commitment to accelerating digital transformation includes specialized expertise in Agile DevOps, Data Engineering and analytics, Testing Automation and support, and comprehensive Managed Application and Infrastructure Services. We’ve evolved from our consulting and development roots into a full‑spectrum service provider, integrating advanced technologies like Generative AI (GenAI) to facilitate our clients’ seamless, transformative digital journeys. A passion unites our dynamic team of technology visionaries and business strategists for innovation and excellence. At SmarTek21, you’ll join a collaborative environment dedicated to shaping the digital landscape and driving impactful results for organizations worldwide.

SmarTek21 is committed to fostering a diverse and inclusive environment. We encourage applications from individuals of all backgrounds and experiences.