Senior Backend Engineer
Location: London
Work Type: On-site
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 (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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