Senior Backend Engineer.

About Carbon

We are a digital Tier 1 Unit microfinance bank. Our mission is to provide accessible and affordable financial services to individuals and businesses across Nigeria. We leverage technology to meet the evolving needs of individual customers and SMEs, driving financial inclusion and economic growth. We offer a wide range of banking services, including savings, loans, and payment solutions, all designed to simplify banking for modern Nigerian customers.

At Carbon, we are:

Passionate: We love what we do and have an ownership mentality.

Resourceful: We make do with what we have. Not wasteful

Intelligent: We are forever learning to better ourselves, constantly experiencing & testing to understand the problem space better

Maverick: We try the unconventional, question widely held assumptions.

Executor: We get shit done. No excuses

Data-Driven: Rigorous in using data for decisions, experiments to test assumptions and hypothesis 

About the role

As a Senior Backend Engineer, you'll play a key role in building and maintaining scalable, secure, and resilient systems that power our platform. You'll collaborate with a cross-functional team to deliver impactful solutions and ensure seamless integrations between services. Our stack leverages Java, Node.js, and PHP, with a strong focus on AWS, CICD, Microservices and Event-driven architecture.
You'll join a team dedicated to building scalable infrastructure, ensuring system reliability, and maintaining top-notch security standards. We are heavily invested in modern engineering practices and are looking for someone passionate about driving excellence in backend development.

Responsibilities

• Design, develop, and maintain robust and scalable backend systems using Java, Node.js, and PHP.


• Architect and implement microservices that align with our platform's scalability and performance goals.


• Leverage AWS services (e.g., ECS, Lambda, RDS) to deploy and manage cloud-native applications.


• Develop and maintain CI/CD pipelines to streamline deployment and ensure delivery of high-quality code.


• Collaborate with frontend developers, product managers, and other stakeholders to deliver seamless end-to-end solutions.


• Implement best practices for API design, particularly RESTful services


• Monitor, troubleshoot, and optimize backend services to ensure reliability, performance, and scalability.


• Mentor junior engineers, participate in technical discussions, and contribute to the team's continuous improvement.


• Write clear, maintainable, and testable code while following modern development practices.
  

Requirements

• Expert-level proficiency in Java, Node.js, and PHP with a strong understanding of backend development best practices.


• Proven experience designing and implementing microservices architectures and distributed systems.


• Strong experience with AWS services (e.g., EC2, ECS, Lambda, RDS, CloudFront, and API Gateway).


• Solid understanding of CI/CD pipelines, automated testing, and deployment practices.


• Familiarity with containerization tools such as Docker and Kubernetes.


• Experience working with relational and non-relational databases such as PostgreSQL, MongoDB, or DynamoDB.


• Proficiency in building scalable, maintainable, and secure RESTful APIs.


• Knowledge of infrastructure as code tools like Terraform, CloudFormation, or similar.


• Understanding of networking concepts, including CDNs, HTTP, and TCP/IP.


• Strong problem-solving skills and the ability to diagnose and resolve performance issues.


• Effective communication skills with the ability to mentor team members and contribute to technical discussions
  

Preferred Skills

• Experience with TypeScript for writing modern JavaScript applications.


• Familiarity with Kafka, Redis, or other message brokers for event-driven architectures.


• Exposure to financial services platforms or fintech environments is a plus.

Recruitment process

• Call with People team


• Case Study ( Assessment)


• Interview

What We Offer

• A collaborative and inclusive engineering culture.


• Opportunities to work with cutting-edge technology and contribute to critical business solutions.


• Support for professional growth and development.


• Competitive compensation, flexible working conditions, and comprehensive benefits

If you're passionate about backend development and want to be part of a team driving innovation with Java, Node.js and  PHP at its core, we’d love to hear from you!