Senior Frontend Engineer (0.5% Equity)

JR United Kingdom; Southampton; On-site; GBP 60,000 - 80,000; Full time

Job summary

A leading tech startup located in Southampton seeks a Senior Frontend Engineer to join their founding team. This equity-only position involves building high-performance mobile applications using React Native. Ideal candidates will have over 5 years of experience, a solid educational background in Computer Science, and a desire for long-term ownership and impact in a mission-driven environment.

Qualifications

• 5+ years proven work experience with hands-on skills
• Ability to work effectively with remote teams
• Strong understanding of React Native libraries

Responsibilities

• Architect, build, and maintain excellent React Native applications.
• Collaborate with cross-functional teams to design and ship features.
• Ensure ongoing code quality via unit and integration testing.

Skills

React Native

Team Collaboration

Agile Methodologies

Self-Directed

Communication

Education

BSc or MSc in Computer Science, Engineering, or related field

Tools

Kubernetes

Containerisation

Microservices

Job description

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Senior Frontend Engineer (0.5% Equity), southampton

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Client:

Location:

southampton, United Kingdom

Job Category:

Other

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EU work permit required:

Yes

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Job Views:

6

Posted:

16.06.2025

Expiry Date:

31.07.2025

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Job Description:

Senior Mobile Frontend Developer (Equity-only)

We are looking for a senior React Native developer interested in building performant mobile apps on both the iOS and Android platforms. You will be responsible for architecting and building these applications, as well as coordinating with the teams responsible for other layers of the product infrastructure. Building a product is a highly collaborative effort, and as such, a strong team player with a commitment to perfection is required.

Responsibilities

• Architect, build and maintain excellent React Native applications with clean code.
• Release applications to the Apple and Google Play stores.
• Work with back-end developers to define API contracts and use those contracts in-app.
• Ensure ongoing code quality via automated unit and integration testing.
• Work with UX Designers, Architects, and other Developers to implement full stack web and mobile solutions.
• Work as part of an Agile Scrum team; Design and develop scalable web applications using open-source technologies.
• Continuously discover, evaluate, and implement new technologies to maximise development efficiency.
• Collaborate with cross-functional teams to define, design, and ship new features.
• Work on bug fixing and improving application performance.
• Working with third-party data sources and APIs.

Compensation

This is a pre-seed, equity-only role, offering 0.5% equity as part of the founding team. There is currently no salary available until we secure Seed funding, at which point competitive compensation will be introduced. This role is ideal for someone seeking long-term ownership and impact in a purpose-driven, early-stage venture

Requirements

• Ability to work effectively with remote team members.
• At least 5+ years proven work experience with direct hands-on skill set.
• BSc or MSc in Computer Science, Engineering, or related field.
• Proven ability to be self-directed and operate effectively in a fast-paced, high-energy environment.
• Ability to communicate, influence other supporting teams such as product, QA, DevOps, etc. to achieve the objectives.
• Experience collaborating with senior developers, project managers, and designers in a fast-paced environment with little supervision.
• Strong understanding of popular React Native libraries, components, and frameworks.
• Able to deliver results on time and take responsibility for a project’s successful outcome.
• Familiarity with cloud native technologies such as Kubernetes, containerisation, microservices and Software-defined Infrastructure.