Senior Fullstack Engineer Node.js, React.js

-Build and scale customer engagement tech used by leading global brands

-Contribute to seamless integrations across CRMs, eCommerce, and POS ecosystems

-Take ownership of mission-critical features across a high-growth SaaS platform

Our client is a cutting-edge tech company that helps brands connect with customers through mobile wallets (Apple, Google, Samsung) by turning offers, loyalty programs, vouchers, and tickets into digital passes.

The Job

Our client is hiring a Senior Full Stack Engineer to join our client’s engineering team. This is a hands-on technical role focused on designing, building, and scaling core platform features using Node.js, React.js, and AWS.

You will work across the stack — building APIs, integrating cloud services, and crafting responsive frontend components — while leading best practices in code quality, architecture, and performance. You’ll also guide and mentor other developers, helping shape engineering standards and processes as the platform grows.

Responsibilities

Designing and building scalable backend services and RESTful APIs with Node.js

Architecting, developing, and maintaining frontend features using React.js

Developing integrations with Shopify and other eCommerce platforms, including custom apps, storefront features, and third-party APIs

Integrating and optimizing cloud infrastructure on AWS (Lambda, DynamoDB, SQS, CDK)

Translating business requirements into technical deliverables and JIRA tasks

Reviewing pull requests, setting coding standards, and ensuring best practices

Debugging, diagnosing, and resolving production issues in collaboration with the support team

Improving engineering workflows, CI/CD pipelines, and deployment practices

Mentoring junior developers and contributing to technical decision-making

Collaborating with product owners and stakeholders to define feature roadmaps and technical solutions

Ideal Candidate

You have 5+ years of professional experience as a full stack or backend developer

You have strong proficiency in Node.js, building RESTful APIs, and backend systems at scale

You have production experience with React.js and Typescript for frontend development

You are confident working with AWS services such as Lambda, DynamoDB, SQS, and CDK

You are experienced with version control (Git) and CI/CD pipelines

You have worked in high-growth SaaS, eCommerce, or startup environments and thrive in fast-paced settings

You have hands-on experience with Shopify or other eCommerce platforms and understand online retail workflows

You have experience mentoring developers and contributing to architecture decisions

You are an excellent communicator and comfortable engaging with both technical and non-technical stakeholders