Senior Backend Engineer
Location: London
Work Type: On-site
Company Description
We are a rapidly growing consumer technology company operating at the intersection of AI, aesthetics, and digital experiences. With a global community of millions, we are building innovative AI-driven products that are transforming how users engage with and understand visual data.
Our offerings range from consumer-facing AI analysis tools to partnerships with leading global brands. As we scale quickly, we are expanding our team and pushing the boundaries of how technology and user experience come together.
Role Description
We are seeking a talented Senior Backend Engineer to join our London-based team full-time. You will play a key role in building and scaling the core infrastructure of our AI platform, owning critical backend systems, and supporting rapid product growth.
This is a high-impact, fast-paced role with significant autonomy, where your work will directly influence product direction and user experience.
Key Responsibilities
Design and implement backend services and APIs using Python, FastAPI, and Django
Build and maintain scalable RESTful APIs with PostgreSQL
Develop and integrate AI/LLM-powered features using frameworks such as LangChain
Implement and manage payment systems, including Stripe integrations and subscription flows
Build image processing and computer vision pipelines
Write clean, maintainable, and well-documented code deployed via Docker and CI/CD pipelines
Collaborate using GitHub, maintaining high code quality and team standards
Work with BaaS platforms (e.g., Supabase) for authentication, storage, and real-time functionality
Ensure performance, scalability, and security best practices
Collaborate cross-functionally with Product, Design, and Frontend teams
Contribute to architectural decisions and mentor other engineers
Develop data-driven backend services and pipelines
Support production systems and deployments within a small, high-performing team
Qualifications
5+ years of professional software engineering experience
Strong Python expertise with backend development experience
Proven experience with FastAPI and/or Django, REST APIs, and PostgreSQL
Experience integrating Stripe for payments and subscriptions
Familiarity with image processing and computer vision
Experience with Docker, GitHub, and modern deployment workflows
Knowledge of cloud platforms (AWS, GCP, or Azure)
Strong understanding of software design principles (SOLID, patterns, clean code)
Experience with BaaS platforms such as Supabase or Firebase
Ability to thrive in fast-paced, high-ownership environments
Nice to Have
Experience with LLM APIs (e.g., OpenAI, Anthropic, Gemini) and LangChain
Background in AI/ML (e.g., generative models, GANs, diffusion, regression)
Experience building data pipelines and data-driven systems
Familiarity with workflow orchestration tools (e.g., Temporal, Prefect)
Why Join
Be part of a fast-growing company in the AI and consumer tech space
High ownership and autonomy over technical decisions
Work closely with founders and a mission-driven team
Strong market traction and growth potential
Opportunity to shape a rapidly evolving industry
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