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SDE III - Whatsapp Voice

HighLevel -
Remote

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Job details

Full-time

Qualifications

Go
Node.js
Test-driven development
MongoDB
Java
IVR
Distributed systems
APIs
AI

Full job description

About us
HighLevel is an AI-powered business operating system that gives agencies, entrepreneurs and SMBs the infrastructure to build, automate and scale. Today, HighLevel supports SMBs across 150+ countries, fueling community-driven growth rooted in real customer outcomes.
To date, businesses operating on HighLevel have generated over $7 billion in ecosystem value, demonstrating the impact of shared infrastructure at scale. By centralizing conversations, automation and intelligence into one system, we help businesses move faster, reduce complexity and execute efficiently.
Behind the platform, HighLevel powers more than 4 billion API hits and 2.5 billion message events daily. With 250 terabytes of distributed data, 250+ microservices and over 1 million domain names supported, our architecture is built for performance, resilience and long-term scalability.

Our people
With over 2,000 team members across 10+ countries, HighLevel operates as a global, remote-first organization built for speed and ownership. We value initiative, clarity and execution, creating space for ambitious people to build systems that support millions of businesses worldwide. Here, innovation thrives, ideas are celebrated and people come first, no matter where they call home.

Our impact
Every month, HighLevel enables more than 1.5 billion messages, 200 million leads and 20 million conversations for the more than 1 million businesses we support. Behind those numbers are real people building independence, expanding opportunity and creating measurable impact. We’re proud to be a part of that.

Learn more about us on our YouTube Channel or Blog Posts

Our Blog Has a New Home :We’ve consolidated our blog experience into one place so you can find the latest HighLevel updates, strategies, and resources faster .

About the Role

As a Senior Software Engineer, with deep expertise in Java/Golang/Node.js, MongoDB, and distributed systems, along with a strong focus on platform stability, scalability, and long-term technical excellence. You’ll join our LC Phone Voice System, which provides capability for voice calling, IVR, SIP and much more.

You’ll be contributing in shaping the experience of our platform. You’ll solve complex challenges across frontend / backend architecture, performance, micro-frontends, and distributed backend systems. You’ll also work on resolving critical voice service issues, such as the carrier-level call blocking and SIP 603 errors reported by clients like Forever Freight Broker. You’ll contribute to overall growth and stability of the platform, collaborate closely with PMs and ensure exceptional user experiences at scale.

Responsibilities

Own and contribute to architecture and development across products, driving technical excellence in both frontend and backend systems.
Develop and optimize backend API services with test-driven development including advanced caching and messaging for reliability and scalability.
Deliver high-quality frontend experiences using modern frameworks, with strong fundamentals in component-based architectures and state management.
Integrate and support observability, logging, and monitoring to ensure platform reliability and rapid incident response.
Ensure top-tier application security and compliance, applying best practices across frontend, backend, and API layers (authentication, authorization, rate-limiting, OWASP).
Leverage LLMs and AI tools to write, refactor, test, and debug code efficiently, implementing guardrails for reliability.
Participate in design reviews, deep dives, and on-call rotations to support a culture of accountability and operational excellence.

EEO Statement

At HighLevel, we value diversity. In fact, we understand it makes our organisation stronger. We are committed to inclusive hiring/promotion practices that evaluate skill sets, abilities, and qualifications without regard to any characteristic unrelated to performing the job at the highest level. Our objective is to foster an environment where really talented employees from all walks of life can be their true and whole selves, cherished and welcomed for their differences while providing excellent service to our clients and learning from one another along the way! Reasonable accommodations may be made to enable individuals with disabilities to perform essential functions.

We encourage you to review our Privacy Policy before submitting your application.

We may use artificial intelligence (AI) tools to support parts of the hiring process, such as reviewing applications, analyzing resumes, or assessing responses and identifying potential inconsistencies or verification signals in application materials based on available information. These tools assist our recruitment team but do not replace human judgment. Final hiring decisions are ultimately made by humans. If you would like more information about how your data is processed, please contact us.

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