Senior Fullstack Developer (Node.js, React, AWS)

Hi! Discover the possibilities of cooperating with Scalo!

At Scalo, we focus on delivering software projects and supporting our partners in growing their business. We create software that enables people to make changes, act faster, and achieve better results. We utilize a wide spectrum of IT services to support our clients in achieving their business goals.

Our areas of activity include, among others:

• technology consulting,
• software development,
• embedded systems,
• cloud solutions,
• data management,
• dedicated project teams.

What do we offer as part of our cooperation?

• the opportunity to provide services in diverse projects from the Software, Embedded, Data, and Cloud Services domains,
• involvement in additional pre-sales and expert initiatives,
• access to medical care, a sports card, and a cafeteria platform in accordance with the applicable cooperation rules.

Daily tasks

• development and maintenance of an advanced web application supporting fraud detection and real-time customer authentication,
• designing and implementing fullstack solutions using Node.js, React, TypeScript, and modern frontend technologies,
• development of cloud services in the AWS environment, including designing and maintaining infrastructure and integrations between system components,
• designing solutions based on event-driven architecture and distributed systems,
• performing tasks throughout the full software development lifecycle — from technical concept and implementation, through automated testing, to production deployment,
• creating and developing REST and GraphQL APIs,
• participating in the maintenance of cloud infrastructure, deployment automation, and DevOps and security activities,
• utilizing AI tools that support the development process, including Claude and GitHub Copilot,
• service delivery mode: 100% remote,
• project budget: up to 150 PLN/h + VAT, depending on experience and the scope of services provided.

Requirements

Competencies required to perform the services:

• minimum 5 years of experience in software development, including very good knowledge of Node.js and TypeScript,
• practical knowledge of AWS, particularly Lambda, DynamoDB, S3, IAM, AppSync, and API Gateway services,
• experience in designing and developing fullstack applications,
• knowledge of React,
• knowledge of event-driven architecture and distributed systems operating in the cloud,
• experience in designing and implementing REST/HTTP and GraphQL APIs,
• knowledge of software testing practices, including TDD, BDD, and automated testing,
• knowledge of SOLID principles and good practices for designing and maintaining code,
• experience in CI/CD processes and deployment automation,
• knowledge of issues related to security, performance, monitoring, and system maintainability,
• ability to independently manage tasks from technical concept to production deployment,
• knowledge of English at a B2+/C1 level.

Nice to have:

• knowledge of Angular, RxJS, NgRx, and Material UI,
• experience working with Cypress or Playwright,
• knowledge of AWS services such as Fargate, EC2, SQS, SNS, Kinesis, OpenSearch, RDS, CloudFront, Glue, and Athena,
• experience in designing DynamoDB databases, including single-table design approaches,
• knowledge of AWS CDK, CloudFormation, Docker, and CircleCI,
• experience in the area of fraud detection, customer authentication, or application security.

Must have: Node.js, TypeScript, AWS, AWS Lambda, AWS DynamoDB, AWS S3, IAM, API Gateway, React, API, REST API, HTTP, GraphQL, TDD, BDD, CI/CD

Nice to have: Angular, RxJS, NgRx, Material UI, Cypress, Playwright, AWS Fargate, AWS EC2, Amazon SQS, SNS, Kinesis, Amazon RDS, CloudFront, Glue, Athena, AWS CDK, CloudFormation, Docker, CircleCI