Senior Full-Stack JavaScript Engineer (Remote — Anywhere)

Duration: Initial 9-week build (1 Dec 2025 – 6 Feb 2026), followed by ~2 months of QA & maintenance

Engagement: Full-time contract

Location: Fully remote — remote means anywhere

Working Hours: UK collaboration hours (9:00–17:00 UK time)

Overview

The client seeks an experienced Senior Full-Stack JavaScript Engineer to join a high-velocity greenfield SaaS build. The role involves working with Tribes and the client on a confidential project (under NDA) for one of the world’s top 10 global companies.

The engineer will help deliver a new platform that streamlines DV360 campaign creation and management, with a strong emphasis on YouTube advertising workflows. The solution integrates deeply with Google APIs, GCP services, and Structured Data Files (SDF).

This is a hands-on role for someone who thrives in fast-paced delivery environments and can produce production-ready code from day one.

Key Responsibilities

• Develop frontend features using React, TypeScript, and Next.js, ensuring full compliance with WCAG 2.1 AA accessibility standards.
• Build and maintain backend services in Node.js, including secure and well-structured REST APIs.
• Deploy and operate services using GCP (Cloud Run, Cloud Build, Secret Manager, Monitoring/Logging).
• Contribute to architecture decisions for a scalable, secure, and high-availability platform.
• Collaborate closely with Tribes and the client’s teams to refine requirements and deliver high-quality outcomes within tight deadlines.
• Support QA, debugging, and performance optimizations during and after the initial build.
• Ensure engineering best practices including code reviews, documentation, and adherence to accessibility and security standards.

Required Skills & Experience

Frontend

• React + TypeScript
• Next.js
• WCAG 2.1 AA accessibility compliance

Backend

• Node.js
• REST API development

Google Cloud Platform

• Cloud Run
• Cloud Build
• Secret Manager
• Cloud Monitoring & Logging

Nice to Have

Testing & Quality

• Playwright
• axe-core for accessibility testing

Infrastructure & DevOps

• VPC networking
• GCP Artifact Registry
• Terraform (IaC)
• CI/CD pipelines
• Security scanning (SAST/DAST)

Data & Caching

• Redis / Memorystore
• PostgreSQL / Cloud SQL

Advertising & Domain Knowledge

• DV360 or other advertising platforms
• YouTube campaign management
• Programmatic advertising concepts

Authentication

• OAuth2 / OIDC
• Okta

Project Timeline

• Phase 1: 1 December 2025 – 6 February 2026 (9 weeks, fast-paced delivery)
• Phase 2: ~2 months of QA and maintenance

Interview Process

1. Submit CV via Tribes website
2. HR interview
3. Technical interview
4. Technical assessment
5. Final offer

About the Client

The role is delivered in partnership with Tribes for the client, a globally recognised organisation ranked among the world’s top 10 companies. All client details remain confidential, and the project is fully under NDA.

Diversity, Equity & Inclusion

Tribes is committed to fostering a diverse, equitable, and inclusive environment. We welcome applicants from all backgrounds, experiences, and perspectives, and we ensure fair and unbiased hiring practices throughout the process.