Lead Full Stack Engineer

About VWO

VWO is a leading Digital Experience Optimization platform trusted by over 3,000 businesses in 100+ countries, including global brands like Samsung, Vodafone, Toyota, HBO, and Domino's. What began 15 years ago as one of the world’s first A/B testing tools has since evolved into a comprehensive, enterprise-grade platform used by product, marketing, and growth teams to experiment, personalize, analyze behavior, and build exceptional digital experiences.

Today, VWO offers a full-stack suite for A/B testing, multivariate testing, feature rollouts, heatmaps, session recordings, behavioural analytics, surveys, personalization, and more across web, mobile, and server-side applications — all in one unified platform. We enable teams to make confident, data-driven decisions that drive user engagement, retention, and conversion.

VWO is a profitable, founder-led business with $50M+ ARR, strong EBITDA margins, and a history of capital-efficient, sustainable growth. In January 2025, Everstone Capital acquired a majority stake in the company to help accelerate our global expansion — both organically and inorganically.

We are a fully remote team of 450+ people, with go-to-market teams across the Americas, Europe, and APAC, and product and engineering anchored in India. Our culture values deep thinking, fast execution, and strong ownership — with minimal bureaucracy and high autonomy. Despite our scale, we continue to operate with the agility and ambition of a startup.

Wingify is a product-led tech company on a mission to build intelligent, performance-driven solutions at the forefront of digital experience and AI innovation. We believe in ownership over execution, curiosity over credentials, and building systems that push boundaries in how software interacts with intelligence.

Lead Full Stack Engineer

What You’ll Do

• Architect, design, and deliver

  scalable full-stack features and systems end-to-end—across backend services, APIs, and frontend interfaces.
• Build

  AI-integrated systems

  (e.g., NLP automation, GenAI assistants, recommendation engines) using LLMs and GenAI APIs in production environments.

• Mentor and lead

  a high-performance team of engineers, establishing best practices in architecture, testing, and DevOps.
• Own

  performance, maintainability, and scalability

  across your projects and ensure long-term code health.

• Collaborate cross-functionally

  with Product, Design, and Data teams to align on product direction and technical strategy.
• Stay

  hands-on with code

  , lead architectural decisions, and contribute to critical reviews and deployments.

Must-Have Skills

• 6–10 years of experience in full-stack development roles with a product-focused mindset.
• Strong proficiency in

  two or more backend languages

  : PHP, Node.js, Golang, Python, Java.
• Expert in

  JavaScript/TypeScript

  with deep knowledge of modern frameworks—

  React

  or

  Angular

  preferred.
• Demonstrated experience

  integrating GenAI APIs

  (OpenAI, Langflow, custom GPT agents) in real-world applications.
• Strong understanding of

  software architecture

  ,

  system design

  , and

  microservices

  .
• Solid DevOps exposure:

  Docker

  ,

  Kubernetes

  ,

  CI/CD pipelines

  (e.g., Jenkins).
• Proficient in

  SQL and NoSQL

  databases.
• In-depth knowledge of

  browser internals

  , rendering optimization, and frontend performance strategies.
• Experience with

  TDD

  , code quality enforcement, and unit test coverage.

Bonus Points

• Led a team through an

  AI-first product transformation

  .
• Contributed to

  open-source AI/ML tools

  or active in AI/engineering communities.
• Experience with

  Langflow

  ,

  vector databases

  (e.g., Pinecone, Weaviate), or

  custom GPT integrations

  .

Why Join Us

• Build software

  that blends product and intelligence

  .
• Work in a culture where

  engineers shape product direction

  .
• Experiment with bleeding-edge

  AI and GenAI tech

  .
• Join a team that

  prioritizes impact, autonomy, and growth

  .