React js Developer

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 an experienced software engineer with strong technical and communication skills who has developed full stack web apps, created solid APIs and beautiful interfaces for consuming them in user friendly apps. Focusing on details and well written self documented code are essential for this position. You can expect to collaborate with a solid team of designers, product managers, developers and testers on a daily basis. You must be experienced in building highly scalable and resilient systems that can meet our customer needs.

Responsibilities

• Create new reporting features and improve the existing functionalities.
• Build backend & Frontend API features and architecture.Work cross-functionally across our platform, experience, CRM and other teams.Drive performance through benchmarking and optimization
• Work with a wide range of systems, processes, and technologies to own and solve problems from end to end.
• Collaborate closely with our leadership team including engineers, designers, and product managers to build new features and productsUphold high engineering standards and bring consistency to the many codebases and systems you will encounter.Architect and build backend & Frontend APIs and features

Your Core Skills

• 2.5+ years of experience as a full-stack software engineer.
• 1+ years experience with Vue.js/React.js
• Proficient with various programming languages and tools such as but not limited to Javascript, TypeScript, Vue.js, NodeJS, and GraphQL.
• Experience with databases such as MySQL/PostgreSQL or MongoDB. Good to have a working knowledge of Redis and Firebase/Firestore.
• Must be able to work with a team and collaborate remotely.
• You have an entrepreneurial mindset, are eager to take on different roles when necessary and know how to navigate a start-up environment.
• You are fulfilled by being a generalist working on both the frontend, backend, and anything it takes to solve problems and delight users and take pride in working on projects involving a variety of technologies and systems.
• Ability to stitch together many different services and processes together, even if you have not worked with them before.
• Hold a great deal of empathy for your team and users, you are a steward of crafting great experiences.Have great communication skills and can thrive in a highly collaborative environment when working cross-functionally with many stakeholders.
• Driven by product quality, and innately know how to balance trade-offs with time to launch new features.A
• keen eye for design and love to think about user flows and user experiences.Must have experience with HTML5 and CSS3

Additional Skills

• Experience with the Nuxt.js framework is a plus.
• Experience with MongoDB profiling and query optimization.
• Using CSS frameworks such as Bootstrap and TailwindCSS
• Experience working in the GCP (Google Cloud Platform) ecosystem.

EEO Statement: 

The company is an Equal Opportunity Employer. As an employer subject to affirmative action regulations, we invite you to voluntarily provide the following demographic information. This information is used solely for compliance with government recordkeeping, reporting, and other legal requirements. Providing this information is voluntary and refusal to do so will not affect your application status. This data will be kept separate from your application and will not be used in the hiring decision.

We may use artificial intelligence (AI) tools to support parts of the hiring process, such as reviewing applications, analyzing resumes, or assessing responses. 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.

Must have extensive and in-depth knowledge and experience in developing APIs in NodeJS, HTML5/CSS/Javascript, MongoDB, Git, production application deployments. And optionally ReactJS Components/Websites/UI/UX, Redux etc.

Cloud infra management

AWS SDK, Google Maps SDK

Elastic Search engine

Mocha or any testing framework

Continuous delivery

Redis, ExpressJS, Apollo Client, PubSub

Responsibilities

Development of web applications and modules

Drafting ReactJS front ends components based on provided mock-ups.

Architecting database and REST/GraphQL APIs for front end.

Integrating multiple 3rd party SDKs including but not limited to AWS, Messagebird, Twilio, Lalamove, Google Maps etc.

Write and execute unit tests

Bug fixes, support and enhancements

UAT and Production deployments

Performance optimizations and app security implementations

Cloud infra management

Backup plans and risk mitigation techniques implementation

Responsibilities :

• Design and write lots of bug-free, efficient, scalable, and reusable code
• Developing front-end architecture and ensuring responsiveness of the application
• Work across the full stack, building highly scalable products that enable positive user experiences and measurable business growth. 
• Working on refactoring the current codebase and determining the root cause for the most complex software issues and developing practical, efficient, and permanent technical solutions
• Optimizing backend services to scale for a few hundred concurrent users
• Develop APIs and scripts using backend programming languages like Node.js and Nest.js 
• Dockerizing different services and automating our AWS infrastructure provisioning steps
• Design and implementation of continuous integration and deployment. 
• Determine process improvements, and best practices, and develop new processes
• Mentor and coach other software engineers
• Integrating with third-party APIs and existing frameworks.
• Ensuring responsiveness of applications and writing maintainable, scalable, and unit-testable code. Be passionate about the long-term stability, scalability, and reusability of shared components.
• Implement new requirements, handle change requests, and fix bugs for different releases. Deliver a high-quality and functioning code.
• Integrating solutions to enterprise software and legacy software
• Actively Participate in sprint ceremonies and work towards continually improving the process
• Prioritizes tasks and keeps manager up to date on status and roadblocks
• Help the junior engineers to unblock them and guide them on best design practices. Help in code reviewing on a regular basis
• Prepare thorough technical documentation which can be used by other engineers
• Stay up to date with new technologies and determine how to incorporate these into future platform capabilities

Requirements:

• Minimum 4-8+ years of overall experience developing B2B SAAS products 
• 3+ years of Experience working on React.js and its core principles
• Bachelor's degree in Computer Science or a related field
• Hands-on experience with Node.js and Express.js including state management like Redux
• Good understanding of NestJS, Next.JS, Tailwind CSS, Server-Side Rendering, Storybook/Bit, Bootstrap, and Material UI.
• Thorough understanding of modeling and scaling databases like MongoDB, DynamoDB or Firestore
• Deep understanding of object-oriented JavaScript and design principles and standards
• Hands-on experience in UI optimization best practice implementations
• Understanding of Serverless architecture like Lambda or Google Cloud functions
• Significant experience in developing high-performance, distributed, and scalable applications with container deployment (Docker and Microservices)
• Well-versed with collaboration, and Testing tools like Git, Swagger, and Cypress
• Proven experience with unit testing, integration testing, and end-to-end testing.
• Knowledge of open-source technologies and common front-end development tools such as Babel, Webpack, NPM, PNPM etc.
• Knowledge of modern authorization mechanisms, such as JSON Web Token
• Knowledge of Nginx and AWS services like S3, and EC2 will be helpful

Preferred Skills:

• Exposure to Terraform, GItlab CI/CD, and GitOps is a plus
• A keen eye for UX has experience building complex B2B applications
• Comfortable working in a dynamic startup environment where experimentation is one of the most common practices for product innovation and improvements
• Basic understanding of the Figma Tool and app development via React Native
• Good experience with deploying applications on AWS & DevOps

Nice to Have:

• Great learning attitude and eagerness to take ownership
• Passionate personality with great enthusiasm for life outside of work
• Critical thinker and a problem solver who has a sense of urgency and wants an interesting job that pushes you out of your comfort zone.
• An innovator who is inspired by the endless ways in which everything we do can always be improved
• High-energy personality, with a strong and demonstrable work ethic

What we Offer:

• Competitive salary 
• Health Insurance
• Remote working environment
• Workday Swap
• Learning Culture

Qualifications for Ruby

Time Zone EST Overlap of 3-4 hours/day

• Proficient in Ruby, and one of the Javascript UI frameworks like React, Ember, Angular, etc.
• Experience working with MySQL, BigQuery, and Snowflake.
• Experience in UI frameworks like React, Ember, Angular, etc.
• Experience building and deploying applications in an Amazon Web Services (AWS) ecosystem. 
• 5+ years of software engineering experience developing scalable production software incorporating testing, evaluation, and monitoring.
• Full-stack development experience
• Strong knowledge of CS fundamentals and code organization best practices
• Bachelor's degree in Computer Science or equivalent practical experience.
• Built systems that make use of complex job queues and offline processing
• Experience with Docker/ECS/AWS
• Experience with testing and writing test cases
• Experience with Jest, Enzyme, and RSpec