About Us

Insider One is the #1 platform that brings everything marketing and customer engagement teams need in one place so they can reach their peak potential and become unstoppable.

Our story began with six desks and a vision to create a single platform to make industry-first technologies and emerging channels accessible to marketers worldwide. Today, Insider One is powered by 1,500+ team members representing 50+ nationalities across 30+ offices. With AI at its core and an integrated Customer Data Platform (CDP), Insider One unites data, personalization, and journey orchestration across the most extensive set of natively supported channels, including WhatsApp, SMS, Email, Web, App, and Site Search.

We recently raised one of the largest funding rounds in the industry, a $500M Series E led by General Atlantic. We are backed by top-notch investors, including Sequoia Capital, QIA, Riverwood, and Endeavor Catalyst, and trusted by 2000+ customers from high-growth startups to the most prestigious Fortune 500 companies such as Samsung, Nike, L’Oreal, Singapore Airlines, Nestlé, Nissan, Lenovo, Puma, IKEA, Allianz, Domino's, and the list goes on.

Insider One was congratulated for becoming one of the only woman-founded, women-led B2B SaaS unicorns in the world. Loved by customers, recognized by analysts, we are the only vendor recognized as the #1 leader in all the capabilities marketing and customer engagement teams need. Don’t just take our word for it —see for yourself. We consistently outperform and continue our leadership, and the results speak for themselves.

From day one, Insider One’s mission has not only been to build a world-class product company, but also to create one of the most socially progressive technology communities in the world. Through our social responsibility initiatives like 100 Social Responsibility Projects, AI Training for Teachers, Code Academy, SheCodes, SheLeads, and SheMarkables , our community has committed to scaling its impact on our communities across 30+ countries, driving initiatives in health, education, farming, animal rights, and increasing women’s representation in STEM.

Behind all these achievements is an exceptionally talented, visionary team of overachievers that moves fast and agile, creating cutting-edge products, and focuses on making an impact. If you want to be a part of this journey, just keep reading.

And now? Now we are looking for a Front-end Developer, who will help our Web Development Team create and implement a wide variety of web-based products using Go, Node JS, or PHP, and wants to take their career one step further. If you think you are one of those people, here you will have the chance to work with the world's leading brands with Artificial Intelligence & Machine Learning technologies. Right now, while you are reading this, we are sending an average of 2.2 billion requests and almost 2 billion instant notifications to more than 450 servers a day. On the Artificial Intelligence and Predictive side, we have more than 100 TB of historical data. We do not wait for jobs or opportunities to come to our feet, we create them. We have now reached 25% of global users. If all these interests you, read on for more!

Our Engineers and Software Developers always think with an innovative perspective, taking advantage of the inexhaustible power of the digital world. They create impressive and intelligent products like a true artist. Our Product and Development teams are located in our Istanbul office, so we produce and develop the technology we export to the world in our own country. As Insider One, we believe in cooperation and adapting the innovations brought by technology by acting fast. We work closely with other Departments with agile teams, and we are not afraid of getting our hands dirty. As we said; we do not wait for jobs or opportunities to come to our feet, we create them ourselves. You can check our Tech Stacks here!

Join our dynamic team where we focus on delivering innovative software solutions. We specialize in leveraging a modern stack with Native JavaScript, jQuery, Vue.js, TypeScript, and Node.js to build scalable and user-friendly applications. We're looking for passionate, competitive developers who thrive in a collaborative environment and are eager to contribute their skills in cutting-edge web projects.

What You Will Do:

Participates in the entire project life cycle, from product development and release to maintenance.
Researches, evaluates, and shares existing and upcoming new technologies with the team.
Develops and maintains high-quality, scalable JavaScript/TypeScript applications.
Collaborates with cross-functional teams to design, develop, and implement web-based solutions.
Works closely with Back-End Developers to communicate with APIs.
Provides control of error channels to keep product quality at the highest level.
Writes and maintains unit tests to ensure code quality and stability.
Aims to keep the code quality and information sharing at the highest level with daily code reviews.

What We Offer:

Be part of a diverse team that’s as global as it gets — where every voice is heard and 50+ nationalities build together.
Level up with internal trainings covering AI fundamentals, coding, foreign languages, and a wide range of personal development skills.
Feed your curiosity with access to Spotify, LinkedIn Learning, Blinkist, MasterClass, and CloudGuru.
Become a Shareowner through our eligibility-based “ESOP” and own a piece of what you build.
Help build the team you want to work with and enjoy rewarding referral bonuses.
Opportunities to give back to your community through volunteering and purpose-driven social impact projects.
From global retreats to team-building activities, expect year-round events that turn into lifelong memories.
Get inspired by the greatest minds in the tech industry through events like our Tech & Dev Talks.

What You Will Need:

Have 3+ years of experience as a Front-end Developer with modern DevOps (NPM, Vite, WebPack, Gulp, Browserify, Babel, etc.) and micro front-end.
Experience leading projects and implementing cloud-based solutions.
Strong proficiency in native JavaScript, jQuery, Vue.js, TypeScript, and Node.js.
Have experience working in an Agile team.
Experience with any cloud services, preferably AWS.
Solid understanding of unit, functional, and e2e testing frameworks and tools.
Solid understanding of design patterns.
Familiarity with microservices, RESTful APIs, JSON, and AJAX.
A competitive mindset with a passion for problem-solving and innovation.
Have experience with Sass or other compiled CSS languages and have experience in responsive web design.
Have experience in developing and testing across multiple browsers, platforms, and devices, including smartphones and tablets.
Ability to work effectively within a collaborative, team-oriented environment.
Have good knowledge of version control systems (e.g., Git).
Are in tune with maintaining, scaling, and monitoring systems (Datadog, Sentry, etc.).
Are self-motivated; independent, organized, and proactive; highly responsive, flexible, and adaptable when working across multiple teams.
Have a visionary mindset.
Fluency in Turkish and English.

Nice to Have:

Familiarity with Laravel in a small scope.
Knowledge of CI/CD pipelines and automation tools.