Senior Full Stack Engineer

FYXER

Senior Full Stack Engineer developing impactful digital products for a fast-growing fintech company. Building reliable systems that support meaningful financial decision-making at scale.

Posted 4/13/2026full-timeRemote • 🇿🇦 South AfricaSeniorWebsite

Tech Stack

Tools & technologies

AWSCloudJavaScriptNode.jsReactTerraformTypeScript

About the role

Key responsibilities & impact

Own features end-to-end, from concept through to production, including performance, reliability, and security
Balance speed and quality, making pragmatic trade-offs to support both short-term delivery and long-term scalability
Strengthen core user journeys by improving reliability, reducing friction, and supporting growth
Contribute to system design across APIs, event-driven architecture, and shared services
Build scalable, reusable backend services and clean integration layers
Maintain high engineering standards through testing, code quality, and thoughtful reviews
Mentor and support other engineers, helping unblock delivery and share context
Collaborate cross-functionally with product and design to deliver meaningful outcomes
Work autonomously while communicating clearly and surfacing risks early

Requirements

What you’ll need

You’re an experienced full stack engineer (typically 4–7+ years) who thrives in fast-paced, collaborative environments.
Take ownership and deliver meaningful outcomes end-to-end
Contribute thoughtfully to technical decisions and trade-offs
Balance delivery speed with system reliability and maintainability
Are curious, pragmatic, and comfortable learning new domains
Collaborate effectively in remote, cross-functional teams
Building and shipping full stack applications in production
Backend development (ideally Node.js / TypeScript or similar)
Frontend development using modern frameworks (e.g. React)
Designing and maintaining APIs and integration layers
Working with cloud infrastructure (e.g. AWS, serverless, containers)
Event-driven systems (queues, background jobs, webhooks)
Infrastructure as code (e.g. Terraform, CI/CD tooling)

Benefits

Comp & perks

Competitive salary
Generous paid time off aligned to your location
Remote-first working with flexible hours
Annual learning & development budget + dedicated learning days
Regular team meetups and virtual socials

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills & Tools

full stack developmentbackend developmentNode.jsTypeScriptfrontend developmentReactAPI designcloud infrastructureAWSinfrastructure as code

Soft Skills

ownershipcollaborationcommunicationmentorshippragmatismcuriosityproblem-solvingautonomycontext sharingtrade-off analysis