Senior Flutter Developer

About Aphex

We’re the construction planning platform replacing outdated spreadsheets with multiplayer tools that delivery teams love. Major contractors like BAM, Balfour Beatty, SKANSKA, Kier, MACE, and Murphy use Aphex to deliver projects ranging from £50 million to multi-billion-pound megaprojects.

We’re tackling an industry that drives 10% of global GDP yet has seen productivity decline for 20 years. It’s time for change.

About the Role

We're seeking a Senior Flutter Developer to join our scaling development team. You'll be tasked with building and maintaining high-performance, reliable mobile applications that help construction teams worldwide communicate progress on site. This is an opportunity to utilise modern mobile development practices and to contribute to an application that's making a real difference in the construction industry.

Requirements and Skills

Lead the development of high-quality Flutter applications using Dart, setting technical direction and best practices

Architect and implement robust offline-first capabilities to ensure reliability in low-connectivity environments

Establish and maintain comprehensive unit testing standards to ensure code quality and stability

Design and drive scalable solutions using MVVM architecture, mentoring others on implementation

Solve complex technical challenges with a high level of precision and attention to detail

Communicate effectively with cross-functional teams and stakeholders in English, translating requirements into technical outcomes

Manage and mentor a team of developers, fostering performance, growth, and a high-performing engineering culture

Nice to Have

Experience with construction or project management software

Familiarity with Firebase services

Understanding of mobile security principles and experience with security frameworks

Contributions to open source Flutter projects

Experience with CI/CD for mobile applications

Knowledge of native Android/iOS development

What We Offer A high-performing team: Be part of and contribute to a genuinely collaborative and motivated team

Genuine development: Ongoing training, learning, and coaching to get better every day (including a training allowance)

A focus on culture At Aphex, we are focused on making real impact, together, and strive to walk the talk on that every day

Growth opportunities As Aphex scales across new markets, your career can scale with it

Annual offsite: In 2025 our team met for a week in Da Nang, Vietnam - you’ll need to join us to see where we have planned in 2026!

Our Interview Process

Initial conversation with our talent team

Technical assessment focused on Flutter development

Technical interview with a Staff Engineer

Final interview with engineering leadership

Equal Employment Opportunity (EEO) Statement

Our company does not discriminate in employment on the basis of race, colour, religion, gender identity or expression, national origin, age, disability, or other non-merit factors. At Aphex, we believe our team should reflect the variety of perspectives in the world we build for. We've noticed that qualified candidates from underrepresented groups sometimes hesitate to apply unless they meet 100% of the listed requirements, while others might apply when meeting just 60%.

If you're excited about Aphex and believe you have the core skills to succeed in this role, we encourage you to apply - even if you don't check every box in the description. Your unique perspective might be exactly what we need. If you need any accommodations during the interview process, please let us know.