-
Calyptus

Fullstack Engineer

Calyptus
United Kingdom · Full-time · Mid-Senior

Want to put your job search on autopilot? Join our platform, complete a 6-minute AI screening interview, and get auto-applied to 100s of high-paying roles.

Sign up now at https://app.calyptus.co/auth/candidate/sign-up and let the opportunities come to you.

____________________________________________________________

What You’ll Do

  • Build the backbone. Help design, build, and deploy core platform systems with the CTO – from the UI down to backend orchestration.
  • Own end-to-end delivery. Lead full-stack projects, drive technical decisions, and ensure performance, scalability, and reliability from day one.
  • Shape the interface between AI and humans. Work closely with the ML team to embed AI agents into workflows.
  • Go beyond product tickets. As a founding engineer, help steer the roadmap, challenge assumptions, and contribute across engineering, product, and architecture.
  • Contribute bold ideas and take initiative to push technical boundaries, driving the platform’s vision forward.


What You Bring

Front-end:

  • Building user interfaces using HTML, CSS, and TypeScript
  • Working with front-end frameworks like React, Angular, or Vue.js
  • Ensuring responsive design and cross-browser compatibility
  • Optimising application performance and load times

Back-end:

  • Developing server-side logic and APIs in Python and using Django and FastAPI
  • Managing and querying databases
  • Implementing security measures and authentication
  • Working with and maintaining servers and deployment infrastructure

Additional ownership:

  • Extensive development and engineering experience
  • Strong ability in JavaScript/TypeScript
  • Experience with at least two major front-end frameworks: React and one other
  • Familiarity with Python and other back-end languages like Java or Node.js
  • Database experience (both SQL and NoSQL)
  • Understanding of web protocols and REST APIs
  • Optimising applications for scalability
  • DevOps knowledge (CI/CD, deployment)
  • Experience working in an Agile development environment
  • Working in Cloud computing environments
  • Experience with ML and LLMs is useful


Education and Qualifications (preferred but not essential)

  • BSc/MSc in Computer Science, Physics, Engineering, or equivalent
  • Prior startup experience – especially early-stage


____________________________________________________________

Want to put your job search on autopilot? Join our platform, complete a 6-minute AI screening interview, and get auto-applied to 100s of high-paying roles.

Sign up now at https://app.calyptus.co/auth/candidate/sign-up and let the opportunities come to you.

Key Skills

Ranked by relevance

ai python react responsive design responsive angular django server cloud java cicd css sql ui
Login to Apply
Posted
Sep 07, 2025
Type
Full-time
Level
Mid-Senior
Location
Greater London
Company
Calyptus

Industries

Information Services

Categories

Information Technology Engineering

Related Jobs

3 roles aligned with this opportunity

View all jobs
View Job Details
Google
Related

Software Engineer III, General Software Development, Search

2026-06-19

Full-time
Not Applicable
India
Information Services
Information Technology
View Job Details
Crossing Hurdles
Related

UI Engineer | $90/hr Remote

2026-06-18

Contract
Associate
Canada
Software Development
Engineering
View Job Details
Google
Related

GECX AI Forward Deployed Engineer I, Google Cloud

2026-06-18

Full-time
Not Applicable
Ireland
Information Services
Information Technology