Senior Full Stack Ruby on Rails Developer

We are seeking a Senior Full Stack Ruby on Rails Developer to work within a US-based FinTech client’s Agile Product team. You will design and deliver end-to-end features on a cross-border banking platform. In this role, you’ll work hands-on across the entire stack—building intuitive front ends, enhancing and scaling backend services, and ensuring that the platform remains secure, performant, and reliable.

Type : 12-month Contract (Rolling)

Rate : R80 000 – R100 000 Depending on experience

Area : Remote within South Africa

What You'll Be Doing

• Improve Front-End Experiences : Optimize the front-end for performance, accessibility, and responsiveness. Contribute to a polished, intuitive user experience by refining UI components and user flows.
• Enhance Back-End Services : Develop robust APIs and integrations that maintain strict data consistency and perform under high concurrency. Ensure fault-tolerance, scalability, and security throughout our services.
• Maintain Quality & Reliability : Write unit, integration, and end-to-end tests. Set up and refine monitoring, logging, and alerting to keep our systems stable and responsive in production.
• Collaborate with Cross-Functional Teams : Work closely with product managers, designers, and fellow developers to translate requirements into actionable technical solutions. Provide input on trade-offs, timelines, and feasibility.
• Participate in Technical Discussions : Contribute to architectural reviews and propose incremental improvements. While you’ll focus heavily on hands-on coding, you’ll also weigh in on design decisions to ensure future scalability and maintainability.
• Mentor & Learn : Lead by example in code reviews, offering constructive feedback and guidance. Support the growth of less-experienced developers while continuing to hone your own skills.
• Stay Current & Innovative : Keep an eye on industry trends, experiment with tools and frameworks, and introduce incremental improvements that enhance development velocity and product quality.

What We're Looking For

• Experience : 8+ years of hands-on software development, including a proven track record working across the stack (front-end and back-end) on production-grade applications.
• Back-End Proficiency : Experience building and operating distributed systems, GraphQL / RESTful APIs, and data-intensive applications. Comfort with relational databases (PostgreSQL) and understanding of concurrency, fault-tolerance, and data consistency.
• Operational Mindset : Familiarity with production monitoring, observability, and best practices for running stable services at scale.
• Collaborative & Communicative : Able to work seamlessly within a team environment, give and receive feedback constructively, and communicate effectively with non-technical stakeholders.
• Adaptability & Curiosity : Eager to learn new technologies, experiment with different approaches, and grow alongside a fast-paced, evolving product and platform.
• Ability to work remotely with your own equipment.
• Willingness to overlap work hours until 12 : 00-13 : 00 EST (negotiable).

It's a Bonus if You Have

• FinTech Expertise : Experience building financial ledgers, payment systems, or other financial services applications.
• Security Know-How : Familiarity with secure coding, regulatory compliance, and best practices in safeguarding financial data.
• Accounting & Reporting Knowledge : Understanding of financial reporting standards and the intricacies of handling financial data.

What's in it for you?

• We live our values - we offer a transparent work environment with a high degree of trust and open communication.
• Own what you develop - our team takes pride in their work and owns the software they release.
• A better process - we use modern tools and processes that optimize for developer happiness.
• Write software that makes a difference - we’re building products that help businesses grow.
• Small and mighty - our engineering team is small which means you can build meaningful relationships but also work on a wide variety of technologies and challenges.

Language / Framework

• Ruby on Rails for our Backend API & Internal Team Admin
• Django for our underwriting module

Database

• Backend is hosted in Heroku
• Front-end on Netlify
• Underwriting module on AWS

If you're a highly skilled Full Stack Ruby on Rails Engineer looking for an exciting remote opportunity with a dynamic fintech team, apply now!