The Senior Software Developer will create high-impact features for real-time systems, mentor juniors, and ensure quality in technical design and architecture.
Reports To: Development Manager, UK
Location: Hybrid (2 days in the office) London, England
About the Job:
We’re looking for a Senior Software Developer to build high-impact features powering real-time, high-volume systems. Central to our platform is a breakthrough offline-first architecture that enables seamless, reliable transaction processing, even in environments with limited or unreliable connectivity. This capability is a critical advantage in live event settings. Backed by fresh capital from top-tier investors, we’re entering an exciting phase of growth as we execute an ambitious European expansion strategy.
Our Tech Stack:
- Front End: React Native, React, JavaScript
- Backend: Ruby, Rails, GraphQL, PostgreSQL, Redis, CouchDb
- Cloud Platform: AWS
- Tools: GitHub, Sidekiq
What We’re Looking For:
- Strong experience with React Native and native mobile layers (Swift/Kotlin exposure is a plus)
- Solid knowledge of React, including Hooks, state management, and Redux
- Excellent JavaScript fundamentals
Nice to Have:
- Familiarity with GraphQL, Ruby on Rails
- Experience with front-end testing frameworks
Key responsibilities:
- Own the technical design for projects of moderate complexity
- Deliver robust, scalable user experience projects with minimal supervision, but through collaboration with product, design, and QA
- Actively identify opportunities and risks across products and teams, mentor junior developers, and drive best practices
- Architect services and systems using accepted design patterns that allow for iterative, autonomous development and future scaling
- Proactively identify technical debt before it becomes a long-term problem while balancing the effort/reward of corrective action
- Anticipate future use cases and make design decisions that minimize the cost of future changes
- Be considered the expert trouble-shooter within your domain of expertise: lead investigations within area of specialization while maintaining a strong sense of product impact
Top Skills
AWS
Couchdb
Git
GraphQL
JavaScript
Postgres
Ruby on Rails
React
React Native
Redis
Ruby
Sidekiq
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