AI-native React Native Engineer (freelance)

Witted; Helsinki; Hybrid; EUR 78,000 - 112,000; Full time

Job summary

Witted is seeking AI-native React Native Engineers to join client projects as freelancers through Witted Partners. You will work on high-impact mobile apps, collaborating with design and backend teams, and potentially advise on architecture.

Qualifications

• Senior-level experience in React Native mobile development.
• Ability to advise on architecture for frontend systems.
• Experience with fullstack work including web and backend elements.

Responsibilities

• Develop and maintain AI-native React Native applications for client projects.
• Collaborate closely with design and backend teams to ensure robust integrations.
• Provide architectural guidance and lead best practices across the team.
• Contribute to AI-assisted development practices and tooling.

Skills

React Native

Fullstack

Tools

Expo

React

Next.js

OpenNext

Playwright

GraphQL

Node.js

AWS

Job description

Shape the future of software with Witted

Witted matches top-tier software and tech talent with the most ambitious projects in the market. We’re now looking for experienced AI-native React Native Engineers to join our client projects as freelancers through Witted Partners. You’ll get to work on impactful client projects on competitive terms, as part of a community of top experts.

We’re looking for AI-native React Native Engineers for two client projects

Our clients in cybersecurity and retail industries are looking for new consultants to join their teams. If you have around 7+ years of relevant work experience, ideally including previous consulting experience with large Finnish organizations, and client references that wow us - check out the details of these projects below and apply.

Our client in the cyber security field is extending its product family. The new product builds on a recently completed greenfield platform and reuses its guidelines, best practices and native integrations. You’ll be the frontend-focused RN engineer in a small team, working closely with design and backend to make sure the product is built well. Part of the project is greenfield, so the pace is fast and the concept is iterated daily.

• Start: as soon as possible
• Duration: until the end of year, extension possible
• Language: English, and ideally also Finnish

What we expect from you:

• Strong React Native experience, including the ability to advise on architecture
• Some understanding of iOS and Android development
• Some knowledge of Node.js on the backend
• A proactive team player who wants to work closely with backend and design
• Excellent communication and people skills
• A startup mentality and experience from greenfield or new product development

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2.project: Grocery shopping app in retail

A large retail client is looking for a senior level RN Engineer to join the product area that builds the customer apps for their grocery business. The main focus is the mobile app of their online grocery store, but there’s web and backend work too. You’ll take a strong role in product development and technical improvements and actively spar the team on how it works.

• Start: December 2026 or January 2027
• Duration: approximately 6 months, extension likely (3-month contract periods)
• Language: English, and ideally also Finnish
• Location: Helsinki, at least 2 days per week at the office (more at the beginning)

What we expect from you:

• Extensive, senior-level experience in React Native mobile development, plus fullstack skills for the occasional web and backend work
• A track record of taking on and solving technically demanding problems
• Experience with the stack: React Native & Expo, React, Next.js & OpenNext, Playwright, GraphQL & Node.js, AWS
• Used to AI-assisted development and able to help the team improve its AI-assisted coding practices (current tools: GitHub Copilot and Amazon Kiro)
• Willingness to actively spar the team on its ways of working
• Nice to have: proven results in e.g. improving React Native app performance or developing test automation