Senior Developer

Project overview

Senior Software Developer – React / TypeScript / AWS

We are seeking two experienced Senior Software Developers to join a major digital transformation programme, supporting the development and enhancement of a modern, cloud-based parcel services platform.

The platform is designed to provide reusable, shared services that can support multiple customer-facing applications, devices and transaction channels. It enables end-to-end parcel processing, including collection and drop-off journeys, carrier integrations, transaction management and tracking updates.

The successful candidates will play a key role in developing new functionality, onboarding additional service providers and expanding the platform’s capabilities. This is a hands-on development role, working across front-end applications, APIs and cloud-based back-end services, with opportunities to influence technical design and contribute to the ongoing evolution of the platform.

Key Responsibilities

Key Objectives

Essential Skills & Experience

Desirable Experience

• Contract duration: 6 months
• Location: Central London, 1 day per week on site
• Pay range: £700- £800.00 per day/ Inside IR35
• Start date: ASAP
• Develop and enhance customer-facing applications using React, React Native and TypeScript.
• Build and maintain scalable, cloud-native services and APIs within AWS.
• Develop and integrate new functionality to support additional service providers and transaction journeys.
• Design and implement API integrations between front-end applications and shared back-end services.
• Work across serverless architecture, event-driven services and workflow orchestration.
• Contribute to infrastructure development and automation using AWS CDK.
• Work with relational and NoSQL databases to support transaction processing, data management and integrations.
• Support the development, deployment and continuous improvement of the platform.
• Collaborate closely with other developers, technical stakeholders and delivery teams to ensure high-quality solutions.
• Share technical knowledge and experience, actively contributing to improved engineering practices and more effective ways of working.
• Lead the technical delivery and integration of new service providers onto the platform, ensuring new capabilities are successfully developed, tested and onboarded.
• Design and deliver new end-to-end collection and drop-off journeys, ensuring they integrate effectively with the existing platform architecture.
• Develop and implement customer-facing reclaim journeys, providing seamless functionality across the relevant applications and services.
• Extend the platform’s capabilities to support additional transaction types and channels, ensuring services remain scalable, reusable and consistent.
• Work collaboratively with the wider development team to identify opportunities for technical improvements, share expertise and promote continuous improvement across engineering practices and ways of working.
• At least 5 years’ commercial software development experience.
• Strong hands-on experience with React and/or React Native.
• Strong TypeScript development experience.
• Extensive experience working with AWS cloud services and cloud-native architectures.
• Practical experience with AWS CDK and Infrastructure as Code.
• Experience developing and integrating APIs.
• Knowledge of relational and NoSQL databases, ideally including Amazon Aurora and DynamoDB.
• Experience working with serverless technologies, particularly AWS Lambda and API Gateway.
• Ability to work across front-end and back-end services within a modern application architecture.
• Strong problem-solving skills and the ability to work collaboratively within an agile delivery team.
• Experience with Go (Golang)
• Knowledge of AWS Step Functions and workflow orchestration.
• Experience with GitHub Actions and CI/CD pipelines.
• Experience working on high-volume transaction processing platforms or complex integration programmes.

Project details

• Start: flexible
• Location: London, Greater London, England, GB
• Rate: 88-100 EUR/h