Back End Developer
hace 3 días
About SmallGiants
SmallGiants is an award-winning digital marketing agency and product studio working at the intersection of
brand, growth, and AI
.
We help ambitious companies scale by combining strategy, design, and performance marketing and we're now building
AI-powered marketing platforms
that redefine how modern marketing teams operate. Our work spans early-stage startups through to global enterprises, with a strong focus on experimentation, measurable impact, and high-quality execution.
If you enjoy building robust systems that power real-world products, and want to be part of a team shaping the future of AI-driven marketing, this role is for you.
The Role
We're looking for a
Senior Backend Developer
to design, build, and maintain scalable backend services that power our internal platforms and client-facing AI products.
You'll be responsible for building clean, reliable APIs, shaping backend architecture, and ensuring performance, security, and maintainability at scale. This is a hands-on role with real ownership and influence over technical direction.
What You'll Do
- Design and build
RESTful APIs
using
Fastify and TypeScript - Apply Test-Driven Development (TDD)
to deliver reliable, well-tested systems - Design and integrate data models using
Supabase (Postgres, Auth, Storage) - Build scalable, production-ready services deployed on AWS
- Write clean, maintainable, and well-documented code
- Collaborate on system design, performance optimisation, and security best practices
- Work closely with product, frontend, and AI teams to deliver end-to-end solutions
What We're Looking For
Required
- Strong experience with
TypeScript and - Proven experience building APIs with Fastify
(or similar frameworks) - Solid understanding of
TDD and automated testing - Experience with AWS
and containerised environments (
Docker
) - Hands-on experience with
Supabase
or Postgres-based backends - Comfortable working with
Git
and CI/CD pipelines
Nice to Have
- Experience with
OpenAPI / Swagger
documentation - Strong SQL skills and database optimisation experience
- Familiarity with
AI agents
, LLM integrations, or AI-enabled systems - Experience with
serverless architectures
and
Infrastructure as Code
(e.g. Terraform)
Why Join SmallGiants?
- Work on
AI-powered products
, not just client projects - High ownership and influence over technical decisions
- Small, senior team with high standards and low bureaucracy
- Real-world impact, systems you build will be used daily
- Flexible working and a culture that values clarity, quality, and curiosity
-
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