Job Description

We are seeking five (5) skilled Real-Time Engineers with deep expertise in Erlang, Elixir, and the Phoenix framework. The ideal candidates will have a strong background in algorithm development and real-time systems. These engineers will be responsible for building and maintaining a robust real-time chatting and offline messaging platform, leveraging a microservices architecture and a variety of AWS services to ensure scalability, reliability, and performance.

Key Responsibilities:

1. Real-Time Chat & Messaging (Erlang/Elixir/Phoenix):

- Design and implement real-time chat and messaging services using Erlang/Elixir and the Phoenix framework.

- Manage WebSocket connections efficiently for real-time communication.

- Develop and maintain offline messaging queues and chat metadata storage using Cassandra.

- Ensure high availability and low latency for real-time messaging through efficient use of Redis and RabbitMQ.

2. Database Management:

- Utilize Redis as an in-memory storage solution for real-time messaging.

- Use Cassandra to store high-volume chat metadata, user activity logs, and offline messages.

- Manage user profiles and chat history in RDS (PostgreSQL/MySQL).

- Integrate RabbitMQ for message queuing and ensuring reliable message delivery.

3. Microservices & Orchestration:

- Develop and deploy microservices architecture using Kubernetes for managing real-time chat 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. Algorithm Development & Optimization:

- Develop efficient algorithms for handling high-concurrency chat connections and message delivery.

- Optimize data retrieval and storage mechanisms to ensure low-latency interactions.

- Work on distributed systems and parallel processing to handle high volumes of real-time data.

6. Collaboration & Teamwork:

- Collaborate with frontend engineers, product managers, and other stakeholders to deliver a seamless user experience.

- Participate in code reviews, design discussions, and provide mentorship to junior engineers.

- Contribute to continuous improvement initiatives within the team and the broader organization.

Required Qualifications:

- Experience:

- Minimum 5 years of experience in backend development using Erlang/Elixir and the Phoenix framework.

- Proven experience in real-time communication systems and WebSocket management. - Strong algorithmic problem-solving skills with a focus on real-time data processing.

- Extensive experience with AWS services, including EC2/ECS, ElastiCache (Redis), and

RDS.

- Proficiency in microservices architecture and container orchestration with Kubernetes.

- Technical Expertise:

- Strong knowledge of Erlang/Elixir for building scalable and reliable real-time services.

- Expertise in using Redis and Cassandra for high-performance data storage and retrieval. - Experience with RabbitMQ for message queuing in distributed systems.

- Proficient in setting up monitoring and logging solutions using Prometheus, Grafana, and

the ELK Stack.

- Familiarity with service mesh technologies such as Istio or Linkerd.

- Other Skills:

- Excellent communication and collaboration skills.

- Ability to work in a fast-paced, agile environment.

- Strong commitment to quality and continuous improvement.

Preferred Qualifications:

- Experience with CI/CD pipelines and automated testing.

- Knowledge of security best practices in cloud environments.

- Experience with real-time communication protocols and distributed systems.

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

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