Senior Backend Software Developer

Knak is a mission-driven company

Why? Because our time is limited, our competition is fierce, and our margin for error is small. For us to have the greatest impact on the world, we need to be laser focused on our core mission, which is...

Empowering people to be creative.

That’s why Knak exists.

We are a world-class enterprise email and landing page creation platform with a focus on making successful and happy customers by providing them with an incredibly powerful, yet easy to use creation platform.

Our industry leading SaaS solution is built by Marketers, for Marketers. We know that it’s the small things that make the biggest impact and that emails and landing pages are where the rubber hits the road when it comes to Marketing Automation. We change the way Marketers work by making them more efficient, while improving conversion rate of their campaigns and helping them stay on brand.

Oh, and we have a bit of fun while doing it, too!

We’re looking for an experienced backend developer to help scale the intelligence of Knak’s AI platform. In this role, you’ll design and build the robust systems that power AI agents—enabling them to analyze data, generate complex marketing assets, and deliver incredible value to our customers.

This role is highly impactful: you’ll contribute to architecture decisions, mentor teammates, and collaborate across engineering and product to shape the future of marketing automation.

• Build reliable APIs: Develop and maintain RESTful APIs with Laravel (PHP), ensuring testability, observability, and performance.

• Create AI microservices: Build Python and Node.js services for AI agent hosting and LLM interaction, enabling seamless content generation.

• Design across the stack: Apply object-oriented and functional programming to deliver scalable and maintainable systems.

• Optimize databases: Tune queries and indexing for MySQL to improve speed and reduce latency.

• Deploy to the cloud: Use AWS services (Lambda, CDN delivery, optimization) to build secure, scalable infrastructure.

• Elevate code quality: Lead and participate in code reviews, maintaining high standards across the team.

• Collaborate cross-functionally: Work with product, design, QA, and DevOps to align solutions with business needs.

• Mentor engineers: Share knowledge and set a high bar for technical excellence.

• 6+ years of backend software development experience

• Strong proficiency in PHP (Laravel), Python, Node.js, and MySQL

• Expertise in RESTful APIs, TDD, CI/CD (GitHub Actions)

• Experience with SaaS architecture, microservices, and AWS

• Knowledge of observability, performance tuning, and scalability

• Familiarity with Docker/Kubernetes

• Excellent problem-solving skills and a collaborative mindset

• Experience in AI-powered product development

• Background with LLMs, LangGraph, or AI agent frameworks

• Prior experience in a fast-growing SaaS company