Software Development Engineer (Fullstack SaaS)

TL;DR

Software Development Engineer III (Node.js, MongoDB): Designing and delivering end-to-end full-stack features for a high-volume marketing and sales platform with an accent on backend architecture, API design, and scalable microservices. Focus on optimizing performance, security, and reliability across the entire stack for over 2 million businesses.

Location: Remote

Company

HighLevel is a cloud-based, all-in-one white-label marketing and sales platform empowering marketing agencies, entrepreneurs, and businesses to elevate their digital presence and drive growth globally.

What you will do

• Own feature delivery from concept to production for the Sub-Accounts platform, designing APIs, implementing backend logic, and building responsive frontend experiences.
• Build and evolve highly scalable, performant microservices using Node.js, MongoDB, Redis, and event-driven patterns on Kubernetes and GCP.
• Proactively hunt down and fix systemic issues (race conditions, deadlocks, memory leaks, data inconsistencies) across the sub-accounts hierarchy and permissions system.
• Drive performance and cost optimizations through query tuning, intelligent caching, and indexing strategies without sacrificing speed or reliability.
• Strengthen security at every layer, including RBAC/ABAC enforcement, tenant isolation, audit trails, and input validation.
• Improve observability across the stack with meaningful logs, metrics, distributed tracing, and real-time alerts for incident debugging.

Requirements

• 4–7 years of hands-on engineering experience with proven exposure to scale (high TPS, large datasets, or complex multi-tenant systems).
• Expert-level Node.js and deep expertise with MongoDB (complex schemas, aggregation framework, indexing, sharding, change streams).
• Solid production experience with Redis (caching, rate-limiting, pub/sub, distributed locks, session management).
• Real-world experience building and operating microservices on Kubernetes.
• Strong hands-on experience with any major cloud provider (GCP, AWS, or Azure) using managed services effectively.
• Comfortable building responsive, high-quality UIs with any modern frontend framework (Vue.js is a big plus; React or Angular experience works perfectly too).

Nice to have

• Experience with AI Tools and contributions to open-source tools or engineering blogs.
• NestJS or Express.js experience.
• Elasticsearch for advanced search/filtering use cases.

Culture & Benefits

• Work in a global, remote-first environment with over 1,500 team members across 15+ countries.
• Be part of a company that supports over 2 million businesses, processing billions of API hits and message events daily.
• Join a global community rooted in creativity, collaboration, and impact, where innovation thrives and ideas are celebrated.
• Take genuine end-to-end ownership of features and directly shape how thousands of agencies and resellers experience the platform.
• Actively pair with teammates, share knowledge, conduct code reviews, and participate in on-call rotations for services you build.

Hiring process

• Artificial intelligence (AI) tools may be used to support parts of the hiring process, such as reviewing applications or assessing responses.
• Final hiring decisions are ultimately made by humans.