
API Development Manager
7 days ago
**About Fastn**
Fastn is on a mission to transform the SaaS landscape by empowering businesses to connect with their customers' environments like never before. Leveraging AI, we provide an integrated infrastructure that enables SaaS companies to build, scale, and manage their integration ecosystem effortlessly.
**Job Requirements:**
We're seeking a highly skilled Senior Software Engineer to join our team as a Senior Software Engineer. As a key member of our team, you will play a pivotal role in architecting, developing, and scaling our AI-powered integration infrastructure. You will work closely with our founding team, product leaders, and customers to create a high-performance, ultra-scalable integration platform that processes millions of transactions per second with sub-millisecond response times.
**Responsibilities:**
- Design and develop core infrastructure, APIs, and integration workflows that power Fastn's platform.
- Build and optimize distributed systems that handle massive transaction volumes with minimal latency.
- Leverage AI-driven automation, data mapping, and smart API connectivity to enhance the integration experience.
- Implement industry-best practices for API security, data privacy, and regulatory compliance (SOC 2, GDPR, etc.).
- Lead and mentor engineering teams, fostering a culture of high performance, innovation, and technical excellence.
- Cross-Functional Collaboration: Work with product, design, and customer success teams to create a world-class developer experience.
- Influence product and technology strategy, ensuring Fastn remains at the forefront of AI-powered integration infrastructure.
**Requirements:**
- 5+ years of software development experience in high-performance SaaS platforms, API infrastructure, or distributed systems.
- Proven track record of building and leading engineering teams in high-growth environments.
- Strong expertise in backend development using Java, Python, or Node.js.
- Deep knowledge of high-performance, low-latency systems with sub-millisecond response times.
- Experience designing and working with RESTful and GraphQL APIs.
- Expertise in database design & optimization (PostgreSQL, DynamoDB, or similar) for massive-scale applications.
- Experience with cloud platforms (AWS, GCP, Azure) and serverless architectures.
- Knowledge of event-driven architectures and message queues (Kafka, RabbitMQ, etc.) for handling massive transaction volumes.
- Strong understanding of API security & authentication (OAuth, JWT, OpenID).
- Experience with AI/ML-driven automation in integrations is a plus.
**What We Offer:**
- Competitive compensation and meaningful equity.
- A flexible remote work environment.
- A strong engineering culture that fosters collaboration and innovation.
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