Full Stack Developer

Full Stack Developer Location: Lagos Island (Remote Work From Home) Industry/Sector: Financial Services Employment Type: Full-Time | Regular Experience Level: Mid-Level (3-5 Years) Salary Range: 500,000 - 700,000 (Gross Monthly) Department: Technology Reports To: Director & Technology Director Minimum Education: HND / BSc / BA Role Overview We are seeking a proactive and highly skilled Full Stack Developer to support the development, optimization, and scaling of our financial platform. This role encompasses full lifecycle engineering, including design, development, security hardening, and performance enhancement. The ideal candidate will contribute to core product initiatives such as multi-currency infrastructure, third-party integrations, and automation of platform reliability and security processes. Key Responsibilities  Platform Audit & Development Support Codebase Audit & Security Hardening Deploy and configure the application in a local development environment.Conduct a comprehensive audit of frontend and backend codebases for maintainability and compliance.Review system architecture with focus on financial logic, authentication flows, data security, and API communication.Identify and mitigate risks, including hardcoded credentials, undocumented logic, unsecured endpoints, and potential vulnerabilities (SQL Injection, XSS, CSRF).Produce a detailed security audit report with remediation strategies and recommended improvements.Refactor and secure critical components following scalable and secure design best practices. Platform Development & Engineering Support Build and enhance modular frontend and backend components for web and mobile platforms.Develop and optimize features such as rewards engines, admin dashboards, fraud monitoring tools, and customer workflows.Integrate essential third-party systems including KYC/AML services, payment gateways, and currency providers.Collaborate with Product Design and Engineering leadership to improve UX, performance, and code quality.Maintain clean architecture, documentation standards, automated testing, and DevOps consistency.Support onboarding of new developers and ensure technical continuity. Post-MVP Scaling & Advanced Feature Development Advanced Feature Development & Scalability Lead development of advanced capabilities including multi-currency wallets, automated loyalty/reward processing, and enterprise-scale account management tools.Build fault-tolerant backend systems optimized for high availability.Develop secure and performant UI workflows for web and mobile experiences.Recommend frameworks, SDKs, or technologies aligned with the product roadmap. Compliance, Testing & Reliability Ensure platform aligns with regulatory requirements including AML/KYC and financial data protection.Implement automated testing, CI/CD pipelines, monitoring dashboards, and alerting frameworks to maintain uptime, reliability, and security. Requirements & Qualifications Education: HND / BSc / BA in Computer Science, Engineering, or a related field. Experience: 35 years in Full Stack or Mobile Development; experience in fintech, banking, or transactional systems is preferred. Technical Competencies: Proven Full Stack development experience.Proficiency in modern stacks:Frontend: React, React Native, or FlutterBackend: Node.js/Express, Django, or LaravelExperience deploying solutions using AWS, Firebase, or similar cloud platforms.CI/CD pipeline experience is an advantage. Soft Skills: Strong ownership mindset and ability to work independently.Advanced analytical thinking, debugging, and problem-solving skills.Excellent communication, documentation, and remote collaboration capabilities. Work Requirements: Stable unlimited internet access.Attendance at bi-weekly virtual development and review meetings.Flexibility to support critical fixes or release-related tasks when required. Benefits Competitive compensation based on experience and contributions.100% remote work with flexible schedule.Opportunity to build and scale a mission-driven fintech product.Professional growth including leadership responsibility and architecture ownership.Access to certification sponsorship and ongoing technical development (performance-based). How to Apply Qualified candidates should submit their CV and GitHub/project portfolio to: hiring@mysigma.io Subject Line: Full Stack Developer