Senior Software Developer

Apollo is a ClimateTech SaaS platform helping enterprises track and reduce their energy usage and carbon footprint. We work with leading companies to drive operational efficiency and sustainability using AI-powered solutions.

We are growing fast and preparing for our Series A. We are now looking for a Senior Software Developer to lead the design and development of scalable systems and drive technical excellence across Apollo’s platform.

What You’ll Do

• Design, develop, and maintain scalable full-stack applications using Node.js, React.js, and PostgreSQL
• Architect and implement robust backend services, APIs, and distributed systems
• Build responsive, high-performance frontend interfaces with React.js
• Optimize database schemas, queries, and performance in PostgreSQL
• Design and maintain cloud-native infrastructure on AWS
• Implement and manage asynchronous communication using Message Queues (MQ) (e.g., SQS, Kafka, RabbitMQ)
• Use Redis for caching, rate limiting, and performance optimization
• Ensure high availability, reliability, and security across the platform
• Write clean, maintainable, and testable code following best practices
• Participate in architectural decisions and contribute to technical roadmap
• Mentor junior developers and conduct code reviews
• Collaborate cross-functionally with product, data, and DevOps teams
• Continuously improve system performance, scalability, and developer experience

What We’re Looking For

• 5+ years of professional software development experience
• Strong expertise in Node.js (TypeScript preferred)
• Strong experience with React.js and modern frontend architecture
• Solid experience with PostgreSQL (indexing, query optimization, schema design)
• Hands-on experience with AWS (EC2, RDS, S3, Lambda, SQS, etc.)
• Experience working with Message Queues (SQS, Kafka, RabbitMQ, etc.)
• Experience using Redis for caching and distributed systems patterns
• Strong understanding of RESTful APIs and microservices architecture
• Experience with CI/CD pipelines and DevOps best practices
• Strong knowledge of system design, scalability, and performance optimization
• Experience with distributed systems and event-driven architectures
• Strong problem-solving skills and ability to take ownership
• Excellent communication skills in a fast-growing startup environment

Why Join Apollo?

• Make a real impact on corporate sustainability and carbon reduction
• Join a high-growth ClimateTech company at an exciting inflection point
• Work with a collaborative and technically strong team
• Contribute to shaping the future of enterprise energy transformation