Software Developer jobs in United Kingdom

We are Fluxon, a product development team founded by ex-Googlers and startup founders. We offer full-cycle software development from ideation and design to build and go-to-market. We partner with visionary companies, ranging from fast-growing startups to tech leaders like Google and Stripe, to turn bold ideas into products with the power to transform the world.

Many of our team members call the Bay Area home, but this role is fully remote across North America.

As a Staff Software Engineer at Fluxon, you’ll drive the end-to-end delivery of products to market while learning, contributing, and growing in partnership with our leadership team.

You’ll be responsible for:

• Guiding product delivery all the way to the user, leading projects, providing technical guidance, and building and iterating in a dynamic environment
• Partnering directly with clients to understand their needs and achieve business goals
• Defining product requirements, identifying appropriate system designs and planning development in partnership with our Product and Design teams
• Helping drive a healthy and effective engineering culture within customer teams and inside Fluxon
• Mentoring engineers across multiple teams, supporting their ongoing growth and strengthening team capabilities

You’ll work with a diversity of technologies, including:

• Core Languages & Runtimes
• Additional: Ruby on Rails, Java, C# (.NET), Kotlin, Swift, Rust
• Frameworks & Ecosystems
• Front-End & UI: React, Next.js (Full-Stack), Angular, SwiftUI
• Back-End & Server-Side: Spring Boot (Java/Kotlin), FastAPI (Python), Django (Python)
• Compute: GCP Compute Engine (VMs), AWS Fargate (Container Orchestration), Google Cloud Run (Serverless Containers), AWS Amplify
• Data & Messaging Services
• Data Warehouse & Analytics: Google BigQuery
• Monitoring & Observability: GCP Cloud Monitoring Suite (CMS)
• Relational (SQL): PostgreSQL, MariaDB
• NoSQL/Document: Firestore (Firebase), Supabase, MongoDB
• In-Memory Caching: Redis, Memcache
• Advanced Technologies & Architecture
• Artificial Intelligence/Machine Learning: AI/ML, Large Language Models (LLMs), Agentic AI, Natural Language Processing (NLP)
• LLM Platforms: Google Gemini, OpenAI ChatGPT, Vertex AI (GCP), Anthropic Claude, Hugging Face (OSS Models)
• Software Design: Architecture Redesign, Single Page Applications (SPA), Mobile Application Development
• Emerging Tech: Blockchain/Crypto

• 7+ years of industry experience in software development
• Experience leading development through the full product lifecycle, including CI/CD, testing, release management, deployment, monitoring and incident response
• Fluent in the design and implementation of scalable system architectures, data structures and algorithms, and effective development practices

Our salary range for this role is $165,000 to $185,000 CAD per year, and we consider your skills and experience and what similar roles pay at companies similar to us when determining your offer.

In addition, we provide:

• Exposure to high-profile SV startups and enterprise companies
• Fully remote work with flexible hours
• Flexible paid time off
• Profit-sharing program
• Parental leave, including adoption and fostering
• Gym membership and tuition reimbursement

We believe diverse teams perform better, and an inclusive environment is essential to building a successful organization. We welcome applicants from all backgrounds, experiences, and perspectives. We are an equal opportunity employer and are committed to providing accommodations throughout the hiring process.