IO Tech Solutions Limited

Staff / Principal Software Engineer – Mobile (React Native) / Remote

Hong Kong remote Senior Salary not listed
remote Senior level Technology & IT Curated
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About the role

Our client is a next-generation financial technology company building a peer-to-peer investment and trading platform on secure, compliant, and trustless infrastructure. Their ecosystem enables users to trade, invest, and access diversified investment strategies transparently alongside professional investors.
Responsibilities

Architect, build, and maintain high-performance React Native applications for both iOS and Android

Act as the technical lead for mobile development, driving architecture and engineering best practices

Ensure code quality, scalability, performance, and stability across the mobile codebase

Conduct code reviews and establish strong development standards

Mentor and guide mobile engineers, helping elevate the overall engineering quality

Collaborate closely with product, backend, design, and QA teams to deliver features end-to-end

Identify and resolve performance bottlenecks, memory issues, and stability risks

Requirements

8+ years of professional mobile development experience (iOS, Android, or both)

3+ years of production experience with React Native

Proven experience as a Tech Lead, Staff Engineer, or Senior Mobile Engineer

Expert-level JavaScript / TypeScript knowledge and strong clean coding practices

Strong understanding of mobile architecture, performance optimization, and memory management

Originally posted on Himalayas

Interview prep

Walk in with sharper answers.

Use this as a quick practice sheet before you speak with the employer.

Senior
Technology & IT Javascript Remote Collaboration Staff Principal Software Senior level

Likely questions

  1. Tell us about work you have done that is close to the Staff / Principal Software Engineer – Mobile (React Native) / Remote role.
  2. How would you approach your first 30 days at IO Tech Solutions Limited?
  3. Which of Javascript, Remote Collaboration and Staff have you used recently, and what did it help you achieve?
  4. How have you led people, improved a process, or made a hard decision in a previous role?
  5. How do you stay organised and communicate clearly when working remotely?

Prepare before the call

  • A recent example that proves your experience with Javascript, Remote Collaboration and Staff.
  • One short story with a problem, your action, and the result.
  • Two examples that show the strengths listed on your CV.
  • A clear reason why this role and company interest you.
  • Your availability, preferred work style, and salary expectations.

Ask them

  • What would success look like in the first 90 days?
  • What are the main problems this hire should help solve?
  • How does the team give feedback and measure good work?
  • What does a normal working week look like for this role?
Practice line

I am interested in the Staff / Principal Software Engineer – Mobile (React Native) / Remote role because I can bring practical experience in Javascript, Remote Collaboration and Staff, learn the team quickly, and contribute to the outcomes IO Tech Solutions Limited needs from this hire.

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