12 of 12 Performance Optimisation Jobs in Doncaster

Software Engineer

Hiring Organisation
Digital Waffle
Location
Doncaster, South Yorkshire, UK
Employment Type
Full-time
Node.js, TypeScript, React, and modern cloud engineering Hands-on experience with AWS serverless, particularly Lambda, Step Functions, DynamoDB Solid understanding of scalable architecture and performance optimisation Experience in scale ups, startups, or SMEs where speed, ownership, and adaptability matter Strong debugging, problem solving, and delivery skills Interest ...

VP Data Science

Hiring Organisation
Acxiom UK
Location
Doncaster, South Yorkshire, UK
Employment Type
Full-time
technologies (e.g., Docker, Kubernetes). Familiarity with DevOps practices and tools for continuous integration and deployment. Solid understanding of system design principles, scalability, and performance optimization. Acxiom is a customer intelligence company that provides data-driven solutions to enable the world's best marketers to better understand their customers ...

Senior Front End Engineer

Hiring Organisation
Ocho
Location
Doncaster, South Yorkshire, UK
Employment Type
Full-time
REMOTE ACROSS NORTHERN IRELAND ONLY Are you a Senior React Engineer looking to build scalable, high-performance applications in a cloud-first environment? My client is looking for an experienced Senior React Engineer to join a growing engineering team and play a key role in designing and delivering modern … AWS. The Role You will be responsible for building and maintaining complex React applications, contributing to architectural decisions, and ensuring best practices across performance, security, and scalability. You'll collaborate closely with product, design, and backend teams in an agile environment. Key Responsibilities Design, develop, and maintain scalable React ...

Senior React Developer (Contract)

Hiring Organisation
Primis
Location
Doncaster, South Yorkshire, UK
Employment Type
Full-time
within a regulated environment (payments, fintech, banking, betting, or similar) Collaborating with backend engineers, product, and QA teams in a distributed setup Contributing to performance, security, and scalability best practices Working with established design systems and modern front-end tooling What We're Looking For (Non-Negotiable) 6+ years … contract basis in a fully remote environment Nice to Have Next.js Experience with payments or financial platforms CI/CD exposure Accessibility or performance optimisation experience ...

Senior Amazon Connect Engineer

Hiring Organisation
Peaple Talent
Location
Doncaster, South Yorkshire, UK
Employment Type
Full-time
latest AWS technologies. We're looking for an Amazon CX Senior Engineer to join the team and lead the design, implementation, and optimisation of complex full-stack Amazon Connect solutions. You'll play a pivotal role in guiding customers through sophisticated contact centre transformations, from architecture and automation … Infrastructure as Code Knowledge of integration patterns with external systems and APIs Experience building CI/CD pipelines for contact centre solutions Expertise in performance optimisation, scaling, and security architecture Hands-on experience with custom extensions for Amazon Connect ...

Senior AI Engineer

Hiring Organisation
Circuit Medical
Location
Doncaster, South Yorkshire, UK
Employment Type
Full-time
approaches including working with agentic architecture. Key Responsibilities Backend Development & Architecture - Design and implement scalable Python backend services, architect and maintain secure, high-performance, production multi-tenant systems, and develop RESTful and asynchronous APIs for internal and external use. LLM, Agents & AI Integration - Drive R&D innovation to meet … preferably AWS) and infrastructure-as-code Ø Experience with containerisation, orchestration, and CI/CD pipelines Ø Understanding of database scaling, caching strategies, and performance optimisation Ø Familiarity with LLM technologies and latest utilisation methodologies, including agentic workflows Ø Strong understanding of software design principles and coding standards ...

Mobile Engineer

Hiring Organisation
Immersum
Location
Doncaster, South Yorkshire, UK
Employment Type
Full-time
world-class Mobile Engineer to help lead the charge across Android and iOS. If you love working close to the metal, care about performance and architecture, and enjoy engaging directly with customers to shape impactful solutions, this is your kind of role. The Role You'll be the technical … security engineers to deliver secure, scalable, and high-performing mobile experiences. Prototype and benchmark next-generation features in areas like on-device encoding, network optimisation, and secure session management. Act as a mobile domain expert — setting technical direction, mentoring others, and influencing long-term product strategy. You Should Have ...

Backend Engineer, Contract | Python (Django), Java and Rust | Fully Remote / EU-Based | Rate £550-650pd, Outside IR35 | 12-months Contract Length

Hiring Organisation
Owen Thomas | Pending B CorpTM
Location
Doncaster, South Yorkshire, UK
Employment Type
Full-time
Contract Length Designing and building robust backend services across Python and Django Collaborating with product and platform teams to scale critical infrastructure Contributing to performance optimisation, secure coding, and clean architecture decisions Bringing in best practices across multiple programming paradigms and languages Core Skills for the Backend Engineer ...

Senior Java Developer | Travel-tech Senior Java Developer | £300-400/day | Outside IR35 | Fully Remote within Europe

Hiring Organisation
VirtueTech Recruitment Group
Location
Doncaster, South Yorkshire, UK
Employment Type
Full-time
Required Skills & Experience Senior-level expertise building and maintaining commercial, production-scale applications. Deep proficiency in: Java Springboot (server-side development, API design) MySQL (performance optimisation, complex queries, relational modelling) Experience architecting and maintaining distributed backend systems. Strong understanding of integration patterns, API design, and scalable service architecture. ...

Senior Shopify Developer

Hiring Organisation
Pulse Recruit
Location
Doncaster, South Yorkshire, UK
Employment Type
Full-time
builds using Liquid Hydrogen, Oxygen and modern Shopify frameworks Custom Shopify app development (Node/React or Ruby) API development and third-party integrations Performance optimisation for high-traffic storefronts Building reusable frontend components and design systems Technical scoping and solution design Code reviews, quality standards and mentoring ...

Data Warehouse Specialist

Hiring Organisation
Practicus
Location
Doncaster, South Yorkshire, UK
Employment Type
Full-time
models, pipelines, and design decisions Support development of data pipelines, Fabric workloads, and Power BI integration Validate ETL/ELT processes, migrated datasets, and performance optimisation approaches Ensure data governance, security, privacy, and quality standards are embedded from day one Confidently challenge vendors, call out risks, and keep ...

Staff Rust Engineer (freelance contract, remote United Kingdom)

Hiring Organisation
Zero to One Search | Recruitment Agency
Location
Doncaster, South Yorkshire, UK
Employment Type
Full-time
search of a solution-oriented Rust Software Engineer (Backend) with deep, demonstrable expertise and experience in Rust, to work on secure, scalable, and high-performance backend systems. You will be responsible for the continued enhancement and development of a multi-component platform, where your expert skills in designing, architecting … building quality systems will intersect with your hands-on coding, performance testing, and integration experience. Responsibilities: Build and deliver secure, high-quality features and improvements using Rust. Experience in TypeScript and Dart will set you above other applicants for this role Create standards-compliant world-class software systems ...