Full Stack Engineer, Contract

66degrees; Greater London; On-site; GBP 90,000 - 150,000; Full time

Job summary

66degrees is seeking a highly skilled Full Stack Engineer for a high-velocity, 12-week contract engagement to build and deploy a modern AI‑integrated application on Google Cloud Platform. You will bridge a responsive React/TypeScript frontend with a Python/FastAPI backend, integrating Vertex AI Gemini models for intelligent data extraction and risk assessment.

The role covers frontend and backend development, cloud‑native deployment with GCP Cloud Run, data pipelines, Firestore/BigQuery usage,

Qualifications

• Proven experience with React and TypeScript frontends.
• Strong Python with FastAPI experience.
• Experience with Google Cloud serverless architecture (Cloud Run/Cloud Run Jobs).

Responsibilities

• Develop frontend and backend features for an AI-integrated app.
• Integrate Vertex AI Gemini models for data extraction and risk assessment.
• Deploy on GCP Cloud Run and manage CI/CD via Azure DevOps.
• Design data pipelines with Firestore and BigQuery.

Skills

React

TypeScript

Python

FastAPI

GCP Cloud Run

Vertex AI

BigQuery

Firestore

IAP

Entra ID

Azure DevOps

API Design

Tools

Cloud Run

BigQuery

Firestore

Azure DevOps

Job description

66degrees is an end-to-end AI transformation partner that guides enterprises from complex business challenges to clear, quantifiable outcomes. Our company is the culmination of several successful firms, each a leader in its own right in cloud, artificial intelligence, and data. This convergence of talent and expertise is how we help businesses reach their own "inflection point," where chaotic data becomes a strategic asset, complexity becomes clarity, and AI becomes an engine for growth. Our ultimate vision is to be the catalyst for a future where every business operates as an intelligent enterprise, with autonomous systems unlocking human potential.

At 66degrees, we believe in thriving through challenges and winning together. These values not only guide us in achieving our goals as a company but also for our people. We are dedicated to creating a significant impact for our employees by fostering a culture that sparks innovation and supports professional and personal growth along the way.

About the Role

We are seeking a highly skilled Full Stack Engineer for a high-velocity, 12-week contract engagement. In this role, you will be responsible for building and deploying a modern, AI-integrated application hosted entirely on Google Cloud Platform (GCP).

You will own the end-to-end development cycle, bridging a responsive React/TypeScript frontend with a high-performance Python/FastAPI backend. A core component of this project involves integrating Google's Vertex AI (Gemini models) to drive intelligent data extraction and risk assessment features.

Job Title: Full Stack Engineer (Contract)

Duration: 12 Weeks

Start Date: October 5th (Early October)

Responsibilities

Frontend Development: Design and build robust, highly responsive user interfaces using React and TypeScript.

Backend & API Development: Architect and develop scalable backend services and RESTful APIs using Python and the FastAPI framework.

Cloud-Native Deployment: Containerise and deploy frontend and backend services utilising serverless GCP Cloud Run.

Data Pipelining: Design, deploy, and manage asynchronous data processing pipelines using Cloud Run Jobs.

AI/ML Integration: Connect the application to Google's foundation models (Gemini) via Vertex AI to execute complex data extraction and automated risk assessments.

Database Management: Utilize Firestore for real‑time application state management and metadata storage, while integrating BigQuery for heavy data warehousing and analytics workloads.

Security & Authentication: Implement enterprise‑grade Single Sign-On (SSO) by configuring Google's Identity‑Aware Proxy (IAP) and integrating it with Microsoft Entra ID.

DevOps & CI/CD: Maintain and optimize deployment workflows using Azure DevOps to ensure seamless CI/CD pipelines into the GCP environment.

Qualifications:

To be successful in this 12‑week sprint, candidates must be able to hit the ground running with the following technologies:

Frontend: Deep proficiency in React and TypeScript.

Backend: Strong Python programming skills with hands‑on FastAPI experience.

GCP Ecosystem: Proven experience with Google Cloud serverless architecture, specifically Cloud Run and Cloud Run Jobs.

Databases: Experience structuring document databases (Firestore) and querying analytical data warehouses (BigQuery).

AI/LLMs: Practical experience integrating LLMs or GenAI APIs into production applications (Vertex AI / Gemini preferred).

Identity & Access: Familiarity with enterprise SSO, Microsoft Entra ID (formerly Azure AD), and GCP Identity‑Aware Proxy (IAP).

DevOps: Experience configuring and troubleshooting CI/CD pipelines in Azure DevOps targeting Google Cloud.

Ideal Candidate Profile

Self‑Starter: You thrive in fast‑paced contract environments and can rapidly familiarise yourself with an existing architecture.

Full‑Stack Mindset: You are equally comfortable debugging a React state issue as you are optimizing a Python API or writing a BigQuery SQL statement.

Quality Focused: You write clean, well‑documented, and maintainable code with a strong understanding of cloud security best practices.

66degrees is an Equal Opportunity employer. All qualified applicants will receive consideration for employment without regard to actual or perceived race, color, religion, sex, gender, gender identity, national origin, age, weight, height, marital status, sexual orientation, veteran status, disability status or other legally protected class

Please note, we cannot sponsor or transfer any visas, of any kind, at this time.

66degrees is an Equal Opportunity employer. All qualified applicants will receive consideration for employment without regard to actual or perceived race, color, religion, sex, gender, gender identity, national origin, age, weight, height, marital status, sexual orientation, veteran status, disability status or other legally protected class.

AI Transparency & Disclosure

As an AI transformation partner, 66degrees leverages intelligent solutions to enhance our recruitment experience. We utilize AI tools—including LinkedIn Recruiter’s Hiring Assistant and interview transcription technologies—to assist with sourcing, role analysis, and capturing interview highlights.

These tools augment our process, but we "Commit to Our Craft" by ensuring all final hiring decisions are made by our human Talent Team. By applying, you acknowledge the use of these technologies to help us "Win Together" in finding the best fit for our team.

Consent for AI-Assisted Interviews
66degrees uses Gemini, developed by Google, to transcribe interviews. This helps us:
Reduce bias: Focus on your answers, not non‑verbal cues.
Ensure fairness: Evaluate all candidates consistently.
Improve our process: Identify areas for improvement.

By participating in our interview process, you acknowledge consent to this transcription. Your data will be kept confidential and secure. Questions? Ask your recruiter or contact [e-mail].