Senior Software Engineer, Full-Stack at Cellulant Nigeria Limited

Cellulant is Africa’s no.1 company in the payments & transfers category - FIntech Awards 2016. We are a PPISP (Payment Platform Infrastructure Service Provider) regulated by the Central Bank of Nigeria (CBN) and insured by Nigerian Deposit Insurance Corporation (NDIC).

We are recruiting to fill the position below:

Job Title: Senior Software Engineer, Full-Stack

Location: Lagos
Department: Technology
Employment Type: Full-Time - Hybrid

Role Overview

• We are seeking a Senior Software Engineer: Full-stack with a strong command of modern front-end and back-end technologies, excellent code review practices, and a passion for collaboration and mentorship.
• In this role, you will contribute to the delivery of high-quality user interfaces with a scalable backend, provide technical leadership, and help elevate the performance of the engineering team through deep technical contributions and peer support.

What You'll do
Code Quality & Technical Excellence:

• Design and implement scalable, user-friendly full-stack applications.
• Develop efficient, lock-free SQL queries for optimal data storage, retrieval, and updates.
• Optimize application performance to achieve fast loading times.
• Build secure and scalable front-end and back-end systems capable of handling high traffic with minimal disruption.
• Create well-documented APIs for seamless third-party integration.
• Proficiency in analyzing and optimizing applications for efficient memory usage and high performance, with a solid grasp of time and space complexity.
• Can establish code quality standards; 
• Can be able to create frameworks for better code organization.
• creates standards for code reviews, implements automated quality gates;
• Drives best practices adoption

Collaboration & Cross-Functional Work:

• Collaborate with:
  • Product designers to translate Figma designs into performant, accessible UI components
  • Backend engineers to define APIs and ensure seamless user journeys
• Actively participate in sprint ceremonies, including:
  • Daily stand-ups
  • Sprint planning and backlog refinement
  • Retrospectives — contributing to continuous team improvement
• Lead task refinements where you are the designated Tech Owner

 Production & Operational Readiness:

• Own end-to-end debugging of production issues using tools such as:
  • Datadog for tracing HTTP requests
  • Logging and monitoring systems to identify root causes
     
• Understand and leverage the team's CI/CD pipelines for efficient delivery
• Identify and share relevant documentation with new or existing team members
• Possesses a foundational understanding of at least one major cloud platform, such as AWS. 
• Proficiency in using the GIT version control system.

 Autonomy & Ownership:

• Work independently with little to no supervision
• Demonstrate proactive behavior — e.g., posting status updates, reviewing PRs, and following team processes without being prompted
• Exhibit strong verbal and especially written communication skills for effective documentation and collaboration. 
• Contributes to architectural discussions by providing a benefit analysis and outlining the pros and cons of proposed approaches.
• Proactively seeks out and researches new and emerging technologies.

What we are looking for:
Required Technical Skills:
Front-End Expertise:

• Advanced proficiency with the front-end technology stack, including React, TypeScript, JavaScript, and CSS-in-JS.
• Strong grasp of modern state management, component architecture, and front-end testing methodologies.
• Proven experience working with design systems and developing reusable UI components.
• Proficiency in backend integration and consuming REST APIs.

Back-End Expertise:

• Advanced proficiency in the backend technology stack: Java and Springboot.
• Solid understanding of at least one SQL language (e.g., MySQL, PSQL, or MSSQL).

General Development:

• Familiarity with Continuous Integration/Continuous Deployment (CI/CD) pipelines and relevant tooling.

Experience:

• 5+  years of professional experience in front-end and backend development
• Proven track record of delivering high-quality front-end applications
• Experience mentoring engineers and leading technical discussions

Soft Skills:

• Takes full ownership of responsibilities and outcomes.
• Excellent communication (written and verbal), collaboration, and documentation abilities.
• Highly self-managed, demonstrating the ability to deliver results with minimal supervision.
• Innovative and customer-centric, always considering the end-user's perspective.

Application Closing Date
Not Specified.

How to Apply
Interested and qualified candidates should:
Click here to apply online