Senior Fullstack Developer

Senior Fullstack Developer About the Role: We are seeking an experienced Senior Fullstack Developer to join a project for one of the largest foundations in the field of pre-school education in the US. You will play a key role in building a brand-new platform from the ground up, working closely with an international team. Responsibilities: Build and customize Shopify-based frontend solutions using JavaScript . Develop backend services using TypeScript in a serverless architecture on AWS . Implement and maintain APIs using AWS AppSync (GraphQL) and API Gateway (REST) . Design and manage workflow orchestration using AWS Step Functions . Work with AWS services such as Lambda, DynamoDB, S3 , and Infrastructure as Code using AWS CDK . Collaborate closely with a US-based product and engineering team , ensuring smooth communication and delivery. Participate in architectural decisions, code reviews, and technical discussions. Ensure high-quality code, performance, security, and scalability of the platform. Requirements: Strong hands-on experience with vanilla JavaScript and Typescript. Backend experience with Node.js and AWS serverless stack (Lambda, AppSync/GraphQL, API Gateway, DynamoDB, S3, CDK). Good understanding of REST and GraphQL APIs . English at C1 level Additional Information: You will collaborate closely with a US-based team. Availability for overlap with US Pacific Time working hours (10:00–14:00 PST). Ability to provide a no-criminal-record certificate Department Software Delivery Role Software Engineer Locations Buenos Aires (AR) Remote status Fully Remote Skills JavaScript, NodeJS, TypeScript Experience Senior Area Fullstack About Spyrosoft Spyrosoft is an authentic, cutting-edge software engineering company, established in 2016. In 2021 and 2022, we were among the fastest growing technology companies in Europe, according to the Financial Times. We were founded by a group of tech experts with established backgrounds in software engineering, who created an ‘engineer-to-engineer’ workplace, powered by enthusiasm, fairness and authentic relationships. Having a unique offering, which bridge the gap between technology and business, we specialise in technology solutions for industry 4.0, automotive, geospatial, healthcare & life sciences, employee experience & education and financial services industries.