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Senior Software Engineer: Full-stack

Cellulant

Nigeria · On-site Full-time Senior 3w ago

About the role

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.

Skills

AWSCSS-in-JSDatadogGITJavaJavaScriptMySQLPostgreSQLReactREST APISpringbootSQLTypeScript

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