Backend Developer - Senior at Infytel Communications Limited

Infytel Communications Limited is a growth-mindset tech company that provides leading-edge technology solutions and services to companies. At the core, our motivation is business growth for enterprise corporations, and in an age of pro-internet technologies, leading-edge technology is the most effective enabler for business growth and customer experience. We seek out, develop, and deploy tailor-made solutions either in-house or through strategic technology partnerships; and serve it to forward-thinking companies.

We are recruiting to fill the position below:

Job Title: Backend Developer - Senior

Location: Lagos
Job type: Full-time

Job Description

• We are looking for an experienced Backend Developer to join our engineering team. You will be responsible for designing, building, and maintaining scalable backend services that power our applications.
• You will work on API development, database architecture, background schedulers, real-time event systems, notification pipelines, and high-performance cloud services.
• This role requires strong problem-solving skills, ownership, and the ability to design robust systems that will support growth and future features.

Responsibilities
Backend Architecture & Development:

• Design, build, and maintain scalable backend APIs (REST or GraphQL).
• Develop clean, maintainable services using Node.js (NestJS/Express) or similar frameworks.
• Implement event-driven architecture (emitters, listeners, queues, workers).
• Build reusable modules (e.g., Notification Service, Scheduler Services, Authentication).
• Integrate external APIs and services (payments, notifications, analytics, cloud storage, etc).

Database & Data Modeling:

• Design efficient relational database schemas (PostgreSQL / MySQL).
• Optimize queries, create indexes, and ensure high database performance.
• Write efficient migrations and manage data lifecycle.

System Automation & Scheduling:

• Implement cron jobs or server schedulers for time-based operations
• (e.g., auto-updating match statuses, reminders, expirations, periodic cleanups).

Real-Time Features:

• Build and maintain WebSocket or Pub/Sub based real-time communication.
• Implement background workers and queues (Redis, BullMQ, RabbitMQ, MQTT, etc).

Security & Compliance:

• Ensure secure authentication & authorization (JWT, session, OAuth).
• Protect APIs against common vulnerabilities (SQLi, XSS, CSRF, brute force, rate limitation).
• Handle environment configuration & secrets management properly.

DevOps & CI/CD:

• Deploy applications to cloud infrastructure (AWS, GCP, DigitalOcean, etc).
• Set up CI/CD pipelines and monitoring tools (Sentry, Grafana, CloudWatch).
• Manage containers and orchestration (Docker, Kubernetes is a plus).

Testing & Code Quality:

• Write automated tests (unit, integration, end-to-end).
• Maintain high code quality and documentation standards.
• Participate in code reviews and architectural discussions.

Cross-functional Collaboration:

• Work closely with frontend/mobile engineers to define API contracts.
• Partner with product and design to build scalable and user-friendly features.
• Communicate technical challenges & propose solutions proactively.

Required Skills & ExperienceCore Technical Skills

• 4–7+ years backend development experience.
• Strong proficiency in Node.js (NestJS, Express, or similar).
• Strong SQL experience (PostgreSQL preferred).
• Experience with event-driven systems and background jobs.
• Experience with queues (BullMQ/Redis) and schedulers (cron, Agenda, etc).
• Experience building and documenting REST APIs.
• Good understanding of caching strategies (Redis).
• Knowledge of cloud deployment (AWS/GCP/DigitalOcean).

Architecture & Design:

• Experience designing scalable, modular backend systems.
• Understanding of domain-driven design (DDD) or clean architecture principles.
• Experience with microservices or modular monoliths.

Soft Skills:

• Strong communication and collaboration skills.
• Ability to work independently and take ownership.
• Problem-solving mindset and willingness to mentor junior engineers.
• High attention to detail and commitment to quality.

Bonus Skills (Nice to Have):

• Experience with real-time systems (WebSockets, Socket.IO).
• Experience with CI/CD pipelines (GitHub Actions, GitLab CI, CircleCI).
• Familiarity with Sentry or similar error-tracking tools.
• Knowledge of Kubernetes or advanced DevOps practices.
• Experience with Expo push notifications, FCM, or APNs.
• Experience with TypeORM/Prisma.

Application Closing Date
Not Specified.