Senior Fullstack Engineer, Internal Tools

About the role

Flutterwavego is currently seeking a Senior Fullstack Engineer to join the Internal Tools team and contribute to the platforms that power the company's day-to-day operations and engineering workflows. This role centers on designing, building, and maintaining web-based applications that serve internal teams and help streamline critical business processes across the organization. The engineer will work in close collaboration with product managers, designers, and fellow engineers to identify operational bottlenecks and deliver tooling solutions that meaningfully improve productivity and efficiency. In this senior capacity, the individual will take full ownership of complex features, drive important technical decisions, and provide guidance and mentorship to more junior members of the engineering team.

Key facts

What you'll do

Design and build internal web applications that streamline workflows and improve productivity across multiple teams within the organization

Own the complete lifecycle of feature development, from initial requirements gathering and scoping through to deployment and monitoring

Collaborate closely with product and engineering teams to understand tooling needs and translate those requirements into well-defined technical solutions

Write clean, maintainable, and well-documented code that follows established patterns, conventions, and best practices across the codebase

Conduct thorough code reviews and provide constructive, actionable feedback to fellow team members to elevate overall code quality

Troubleshoot and debug production issues that affect internal applications, identifying root causes and implementing reliable fixes quickly

Contribute to architectural decisions that shape the long-term direction and evolution of the internal tooling platform

Mentor junior engineers through pair programming sessions, code reviews, and knowledge-sharing to help them grow their technical abilities

Participate in on-call rotations to monitor and ensure the reliability, availability, and performance of internal systems and services

Continuously evaluate and improve development processes, automation, and tooling practices to make the team more effective over time

Requirements

Demonstrated experience building fullstack web applications in a professional engineering environment over multiple projects and iterations

A strong and thorough understanding of both frontend and backend development principles, patterns, and best practices

The ability to work independently and take full ownership of complex, ambiguous projects from start to finish

Excellent written and verbal communication skills for collaborating effectively with cross-functional teams and external partners

Prior experience mentoring and guiding less experienced engineers, helping them grow their technical capabilities and confidence

A consistent problem-solving mindset paired with strong attention to detail and a commitment to delivering quality work

Comfort and experience working in a fast-paced environment where priorities shift and deadlines are demanding

A genuine commitment to writing high-quality, well-tested, and maintainable code that meets established standards and guidelines

Nice to have

Prior familiarity with internal developer tooling, observability systems, and platform engineering concepts and practices

Experience working at or alongside companies operating in the fintech, payments, or financial technology sector

A solid understanding of accessibility best practices and their application to internal-facing web applications and tools

Previous background in building developer-facing dashboards, analytics platforms, and internal monitoring solutions for engineering teams

Skills & tools

Proficiency in modern web frameworks and libraries for building both frontend user interfaces and backend services

Hands-on experience with version control systems, code review processes, and collaborative team-based development workflows

Solid familiarity with cloud hosting platforms, container orchestration, and continuous integration and deployment pipelines

A working understanding of database design, query optimization, indexing strategies, and data modeling best practices

Knowledge of various testing frameworks, test automation strategies, and quality assurance practices for web-based applications

General comfort and experience with containerization technologies, infrastructure-as-code, and declarative configuration management approaches

Practical notes

This role is based in Lekki, Lagos and requires regular on-site presence at the company office location

The position is full-time with standard business hours and a regular weekly schedule of work days

The Internal Tools team collaborates closely with engineering, operations, and product stakeholders across the broader organization

Candidates should be prepared to discuss their past projects, technical decisions, and contributions to previous teams

The hiring process includes multiple rounds of technical interviews, system design discussions, and cultural fit conversations with the team