Senior Full Stack Engineer

4 weeks ago

Lagos, Lagos, Nigeria Lorgarithm Full time
Job Title: Senior Full Stack Engineer

Job Summary:

Lorgarithm is seeking a highly skilled Senior Full Stack Engineer to join our team. As a Senior Full Stack Engineer, you will be responsible for designing and implementing complex systems that include video calling, payment processing, and various AWS and Kubernetes services.

Key Responsibilities:

1. **Backend Development (NestJS):**

* Design and implement backend services using NestJS.
* Develop and manage WebRTC signaling servers for video call management.
* Integrate with TURN/STUN servers (Coturn) for optimal video call performance.
* Implement secure and scalable payment processing systems using Stripe, Interswitch, or Flutterwave.
* Ensure the security of sensitive data using Vault by HashiCorp.

2. **Frontend Development (Next.js):**

* Develop and maintain high-performance web applications using Next.js.
* Collaborate with designers to create user-friendly and responsive UIs.
* Optimize frontend performance to ensure a seamless user experience during video calls and payment processing.

3. **Microservices & Orchestration:**

* Develop and deploy microservices architecture using Kubernetes for managing real-time online market services.
* Implement and manage StatefulSets for Cassandra to ensure seamless database integration.
* Deploy and monitor chat services using AWS EC2/ECS for optimal performance and scalability.
* Utilize Istio or Linkerd as a service mesh for microservices management and security.

4. **Monitoring & Logging:**

* Implement monitoring solutions using Prometheus and Grafana to track performance metrics.
* Set up and manage logging infrastructure using the ELK Stack (Elasticsearch, Logstash, Kibana).
* Ensure that the system is highly observable with real-time metrics and alerts.

5. **Video Calling Infrastructure:**

* Deploy and manage WebRTC signaling servers on AWS EC2/ECS.
* Utilize Elastic Load Balancing for distributing WebRTC connection requests.
* Implement auto-scaling using Kubernetes to handle varying call volumes.
* Store and manage video call metadata and logs using Cassandra, and store recorded video calls in S3.

6. **Payment Processing Infrastructure:**

* Implement and integrate secure payment processing using Node.js or NestJS.
* Deploy payment services on AWS EC2/ECS, ensuring high availability with Kubernetes.
* Manage transaction records and payment logs using RDS (MySQL/PostgreSQL).
* Use AWS Lambda for integrating with payment gateways and processing transactions efficiently.

7. **Cloud Infrastructure & Kubernetes:**

* Deploy, manage, and scale services using Kubernetes for both video calling and payment processing.
* Implement auto-scaling, load balancing, and security best practices.
* Utilize AWS services (EC2, ECS, Lambda, S3) for deploying and maintaining robust, scalable systems.

8. **Algorithm Development & Optimization:**

* Develop and optimize algorithms for real-time communication and secure transactions.
* Ensure low-latency and high-performance across all services.
* Collaborate with the team to solve complex problems using efficient algorithms and data structures.

9. **Collaboration & Teamwork:**

* Work closely with other engineers, designers, product managers, and DevOps to deliver end-to-end solutions.
* Participate in code reviews, contribute to continuous improvement initiatives, and mentor junior developers.

Requirements:

* Minimum 5 years of experience in backend development with NestJS.
* Proven minimum 4 years of experience in frontend development with Next.js.
* Strong algorithmic problem-solving skills.
* Extensive experience with AWS services, including EC2, ECS, S3, and Lambda.
* Proficiency in Kubernetes for deploying and scaling applications.
* Experience with WebRTC, Coturn, and video calling infrastructure.
* Familiarity with payment processing systems like Stripe, Interswitch, and Flutterwave.

Preferred Qualifications:

* Experience with CI/CD pipelines and automated testing.
* Knowledge of security best practices in cloud environments.
* Experience with real-time communication technologies beyond WebRTC.

Location: 2 days at Lagos, Nigeria Office, 3 days remotely; Hybrid.

Compensation: #600,000 - #1,000,000; Based on experience

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