Contract Role: Senior Full Stack Developer | React | Angular | Vue
Contract Location: London 4-5 days onsite each week
Contract Start: Starting ASAP (inside IR35)
Contract duration: End of 2026

Payroll provider: Rockford Payroll Info for Contingent Workers – Rockford Pay

Role Summary

Deloitte are looking for a highly skilled Senior Full Stack Developer to join our team and lead the design, development, and delivery of scalable, high-performance applications. The ideal candidate has strong expertise in both front-end and back-end technologies, experience with cloud platforms, and the ability to mentor junior developers while driving architectural and strategic decisions.

Key Responsibilities

Technical Delivery

Design, develop, and maintain full-stack applications using modern frameworks and technologies.
Build scalable APIs, microservices, and integrations.
Develop high-quality, responsive UI components with an eye for performance and usability.
Optimize system performance, reliability, and scalability.

Architecture & Design

Contribute to application architecture decisions and long-term technology strategy.
Create technical designs, sequence diagrams, and solution documentation.
Implement coding standards, best practices, and reusable components.

Cloud & DevOps

Utilize CI/CD pipelines for end-to-end automation.
Work with cloud platforms (e.g., Azure/AWS/GCP) for application hosting and deployments.
Manage application monitoring, logging, and performance tuning.

Collaboration & Leadership

Work closely with Product Owners, Designers, and cross-functional teams to deliver features.
Perform code reviews and provide technical mentorship to junior and mid-level developers.
Participate in sprint planning, grooming, estimation, and Agile ceremonies.

Required Skills & Experience

Technical Expertise

Strong proficiency in front-end technologies:
- React / Angular / Vue
- HTML5, CSS3, JavaScript/TypeScript
Solid experience in back-end technologies:
- Node.js / .NET / Java / Python
- REST APIs, GraphQL
Strong understanding of databases:
- SQL (PostgreSQL, MySQL, SQL Server)
- NoSQL (MongoDB, Cosmos DB, DynamoDB)
Hands-on experience with cloud services, ideally Azure or AWS.
Experience with CI/CD pipelines (GitHub Actions, Azure DevOps, Jenkins, etc.).
Containerization & orchestration (Docker, Kubernetes) is a plus

Soft Skills

Strong problem-solving abilities and analytical thinking.
Excellent communication and stakeholder engagement skills.
Ability to work independently and lead technical initiatives.
Experience working in Agile/Scrum teams.

Preferred Qualifications

Extensive experience of professional full-stack development experience.
Experience with microservices, event-driven architectures, or serverless technologies.
Exposure to security practices, OAuth2, SSO, and secure coding principles.
Prior experience mentoring teams or leading development streams| DataBricks, PowerBI, Python

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