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Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Senior Fullstack Engineer (Python React.js) - **Company:** Parser Limited - **Location:** Hayes, UK (Remote available) - **Experience:** Expert - **Salary:** £71,355.0 - **Contract:** Permanent contract - **Skills:** Web Interfaces, HTML, JavaScript (Programming Language), Active Directory, Adobe InDesign, Application Programming Interfaces (APIs), Artificial Intelligence, Amazon Web Services, JIRA, Cascading Style Sheets (CSS), Cloud Engineering, Databases, Continuous Integration, Extract Transform Load (ETL), Data Transformation, Database Queries, Software Design Patterns, Event-Driven Programming, Github, Monitoring of Systems, Python (Programming Language), PostgreSQL, Machine Learning, Message Broker, Microsoft Message Queuing, MongoDB, MySQL, NoSQL, OAuth, Parsing, Performance Tuning, Scrum Methodology, Openid Connect, Azure Active Directory, JSON Web Token, Software Engineering, Datadog, Load Balancing, ReactJS, System Availability, Flask (Web Framework), Grafana, Software Security, Caching, AWS Lambda, Indexer, Backend, Git, Cloudformation, Fastapi, Event Driven Architecture, Infrastructure Automation Frameworks, Information Technology, Apache Kafka, Graphql, Data Management, Machine Learning Operations, Front End Software Development, React Redux, Asynchronous Programming, Api Design, Cloudwatch, Terraform, Software Version Control, Api Management, Serverless Computing, Docker, Web Api, Microservices - **Published:** August 9, 2026 - **Apply:** https://www.adzuna.co.uk/jobs/details/5832264420 ## About the Role If you are looking for a place where you can think beyond execution, take true ownership of outcomes, influence decisions, and continuously learn alongside top-tier specialists in a truly global environment, we'd love to meet you., * Bachelor degree in Computer Science, Software Engineering, or any related field is required, or equivalent practical experience. * Minimum 8 years of experience in backend development, with a strong focus on building scalable, high-performance systems. Technical Skills: * Python expertise, with hands-on experience building backend services and APIs using FastAPI, Flask or similar. * Experience in designing and developing end-to-end (E2E) tests to ensure smooth integration between backend and frontend components. * A solid understanding of microservices architecture, event-driven systems, and service-oriented design patterns. * In-depth knowledge of SQL databases (e.g., PostgreSQL, MySQL) and NoSQL databases (e.g., MongoDB) for data management and optimization. * Experience with ETLs and data transformation * Solid expertise in HTML, CSS, JavaScript, and ReactJS. * Extensive experience with cloud platforms such as AWS including services for database hosting, API management, and serverless computing. * Proficiency with Docker for containerization and orchestration tooling such as ECS (Amazon Container Services), enabling scalable application deployment. * Hands-on experience with API security protocols, including JWT, OAuth2, and OpenID Connect, Active Directory (now Microsoft Entra ID) to secure sensitive data and control access. * Proficiency with Git for version control, GitHub Actions and CI/CD pipelines to automate and streamline development workflows. * Proficiency with performance tuning and scalability techniques, such as load balancing, caching, and database indexing. Soft Skills: * Strong analytical and problem-solving skills, with the ability to quickly assess and address technical challenges. * Excellent communication skills, both written and verbal, for collaborating with cross-functional teams and documenting technical solutions. * A proactive, self-motivated approach to addressing issues and driving improvements in backend systems. * A strong commitment to continuous learning and staying up-to-date with emerging technologies and industry best practices., * Familiarity with message brokers such as Kafka, or AWS SQS for handling asynchronous communication. * Experience with Infrastructure as Code (IaC) tools like Terraform or CloudFormation for managing cloud infrastructure. * Knowledge of observability and monitoring tools, such as Cloud Watch or Datadog, to track and troubleshoot system performance. * Familiarity with serverless architectures (e.g., AWS Lambda) and event- driven programming paradigms. * Exposure to Agile/Scrum methodologies and tools like Jira for managing tasks and sprint planning. * Certifications in cloud technologies, such as AWS Certified Developer. * Manage, host, and serve AI/ML models (MLOps), by ensuring their scalability, reliability, and performance in production environments. ## Description We are looking for a highly skilled Fullstack Engineer to design, develop, and maintain scalable, secure, and efficient server-side applications. The ideal candidate should have experience in microservices architecture, API development, database management, and frontend ensuring high availability and performance of backend and frontend services. In this role, you will collaborate closely with frontend engineers, product managers, and other stakeholders to build robust backend solutions that power our applications. A strong focus on Separation of Concerns (SoC), security best practices, and performance optimization is crucial for success in this position. Your key responsibilities: * Integrate models into backend systems and create API endpoints for model interaction (e.g., retrieving predictions). * Develop and maintain scalable services, e.g. Microservices utilising REST, gRPC, or GraphQL, ensuring optimal performance and seamless integration. * Optimize database queries and schemas to improve performance, scalability, and reliability. * Implement security features, including authentication and authorization using industry-standard practices. * Develop and maintain web interfaces using ReactJS * Implement and maintain state management using tools such as Redux or React Query * Collaborate with frontend developers to ensure efficient API integration and a seamless user experience. * Troubleshoot and resolve production issues, ensuring high availability and minimal downtime. * Write unit and integration tests to maintain code reliability and ensure high- quality releases. * Continuously monitor and optimize backend performance using observability tools such as Datadog, Cloud Watch or similar. * Participate in design discussions and decision-making to enhance system robustness and scalability. * Maintain technical documentation to ensure clear communication of system capabilities and updates., Parser may use AI-assisted tools during certain stages of the recruitment process to support operational efficiency. Our recruiting teams use AI to streamline note-taking and scheduling. All hiring decisions are made by people, with human review and oversight. ## Related Videos - [How a Small Team Shrank a Microsoft Monorepo by 94%](https://www.wearedevelopers.com/videos/1236-how-a-small-team-shrank-a-microsoft-monorepo-by-94) - [The Resilience of the World Wide Web](https://www.wearedevelopers.com/videos/1281-the-resilience-of-the-world-wide-web) - [Collaboration Quantified: Lessons from Open Source Developer Networks](https://www.wearedevelopers.com/videos/1422-collaboration-quantified-lessons-from-open-source-developer-networks) - [Shipping Faster with Less: Render on Cloud Hosting, AI Workloads, and the Future of DevOps](https://www.wearedevelopers.com/videos/1894-shipping-faster-with-less-render-on-cloud-hosting-ai-workloads-and-the-future-of-devops) - [Git for Code Reviews](https://www.wearedevelopers.com/videos/429-git-for-code-reviews) - [Build and Deploy a Fullstack App with Open Source Tooling](https://www.wearedevelopers.com/videos/775-build-and-deploy-a-fullstack-app-with-open-source-tooling) ## Related Articles - [Find a Developer Job: 12 Best Job Sites For Developers](https://www.wearedevelopers.com/magazine/165-find-a-developer-job-12-best-job-sites-for-developers) - [Is Software Engineering Over-Saturated?](https://www.wearedevelopers.com/magazine/418-is-software-engineering-over-saturated) - [The 7 Most Popular Backend Frameworks for Developers](https://www.wearedevelopers.com/magazine/403-the-7-most-popular-backend-frameworks-for-developers) - [Fully Remote Software Engineer Jobs](https://www.wearedevelopers.com/magazine/447-fully-remote-software-engineer-jobs) - [Dev Digest 121 - AI goes offline](https://www.wearedevelopers.com/magazine/456-dev-digest-121-ai-goes-offline) - [React Developer Salary [2023]](https://www.wearedevelopers.com/magazine/198-react-developer-salary-2023)