Senior Backend Developer at Interactive Resource Management Ltd

• The Senior Backend Engineer is responsible for designing, building, and maintaining secure, scalable, and highly reliable backend systems that support business-critical application workflows. The role focuses on backend architecture, API development, data integrity, security, and operational excellence across distributed systems operating at scale.
• This role is accountable for ensuring backend systems meet high standards of reliability, security, and maintainability, while enabling the organization to evolve and scale its digital platforms efficiently.

• Architecting and implementing robust backend services and RESTful APIs that are secure, performant, and scalable.
• Designing and maintaining stateful and stateless backend components, ensuring consistency, reliability, and fault tolerance across distributed systems.
• Implementing idempotency, retry, and recovery mechanisms to ensure system resilience and data integrity under high load and partial failures.
• Developing and managing event-driven and asynchronous processing workflows, including webhook and callback handling.
• Applying strong API security controls, including authentication, authorization, rate limiting, and abuse prevention.
• Ensuring data protection, privacy, and regulatory compliance, including consent management and secure handling of sensitive data.
• Implementing encryption and key-management best practices to protect data at rest and in transit.
• Designing and maintaining audit trails, logging, and monitoring to support traceability, observability, and compliance requirements.
• Optimizing backend performance and scalability using appropriate database, caching, and messaging technologies.
• Collaborating closely with frontend, DevOps, product, and compliance teams to deliver end-to-end solutions.
• Providing technical leadership and mentorship, contributing to architectural decisions, coding standards, and continuous improvement initiatives.

• Experience working with payment platforms, mobile money systems, SMS gateways, and USSD-based services will be considered a strong advantage, particularly in environments requiring high reliability, regulatory awareness, and real-time transaction processing.

• Bachelor’s degree in computer science, software Engineering, Information Technology or any other related field.
• + 5 years’ experience in backend development
• Payments experience (M-Pesa, Stripe, PayPal)
• Node.js/Python, Java expert
• PostgreSQL + Redis
• RESTful API design
• Data protection regulations knowledge
• Security focus (encryption, OAuth 2.0)

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