Software Development Engineer III - Full Stack Development - Ads Manager Team

About Us HighLevel is an AI powered, all-in-one white-label sales & marketing platform that empowers agencies, entrepreneurs, and businesses to elevate their digital presence and drive growth. We are proud to support a global and growing community of over 2 million businesses, comprised of agencies, consultants, and businesses of all sizes and industries. HighLevel empowers users with all the tools needed to capture, nurture, and close new leads into repeat customers. As of mid 2025, HighLevel processes over 4 billion API hits and handles more than 2.5 billion message events every day. Our platform manages over 470 terabytes of data distributed across five databases, operates with a network of over 250 microservices, and supports over 1 million hostnames. Our People With over 1,500 team members across 15+ countries, we operate in a global, remote-first environment. We are building more than software; we are building a global community rooted in creativity, collaboration, and impact. We take pride in cultivating a culture where innovation thrives, ideas are celebrated, and people come first, no matter where they call home. Our Impact As of mid 2025, our platform powers over 1.5 billion messages, helps generate over 200 million leads, and facilitates over 20 million conversations for the more than 2 million businesses we serve each month. Behind those numbers are real people growing their companies, connecting with customers, and making their mark - and we get to help make that happen. About the Team: Currently we have millions of sales funnels, websites, attributions, forms and survey tools for lead generation. Our B2B customers use these tools to bring in the leads to the HighLevel CRM system. We are working to continuously improve the functionality of these tools to solve our customers’ business needs. In this role, you will be expected to be autonomous, guide other developers who might need technical help, collaborate with other technical teams, product, support and customer success About the Role: We are looking for a passionate and highly skilled Senior Software Development Engineer (SDE3) to join the Ads Manager Team. You will work on building scalable systems and user experiences that power ad campaign creation, optimisation, reporting, and automation across multiple advertising platforms.You will collaborate closely with Product, Design, QA, AI, and Platform teams to deliver high-impact features and improve campaign success rates, scalability, and reliability.This role requires strong backend engineering fundamentals, product ownership, execution discipline, and the ability to solve complex technical challenges at scale. Responsibilities: Design and build scalable backend services and APIs for Ads Manager. Develop integrations with advertising platforms such as: Meta Ads Google Ads LinkedIn Ads Other ad ecosystems Build systems for: Campaign publishing Audience targeting Attribution tracking Analytics & reporting Ad automation workflows Improve campaign publishing reliability and reduce user drop-offs. Collaborate with Product and Design teams during requirement and feasibility discussions. Participate in architectural discussions and technical decision-making. Optimise application performance, scalability, and reliability. Write clean, maintainable, and testable code. Contribute to engineering best practices, code reviews, and SDLC improvements. Team & Execution Take ownership of features end-to-end. Participate actively in sprint planning, estimation, and retrospectives. Work closely with QA to ensure quality releases. Collaborate proactively across teams and communicate effectively on blockers and progress. Your Core Skills: 4+ years of software engineering experience. Strong proficiency in: Node.js TypeScript / JavaScript MongoDB REST APIs Experience building scalable backend systems and microservices. Good understanding of distributed systems and asynchronous processing. Experience with cloud platforms such as AWS or GCP. Familiarity with CI/CD pipelines and modern development workflows. Strong debugging, analytical, and problem-solving skills. Ability to work independently with strong ownership and accountability. Additional Skills: Experience with Vue.js or React.js. Experience working with Ads APIs or MarTech products. Familiarity with: Event-driven architectures Redis, Kafka, RabbitMQ, or similar technologies Analytics and reporting systems Exposure to AI-powered or automation-driven products. Experience working in fast-paced SaaS environments.