Senior Front-end Developer

Istanbul, Turkey
Software Development /
Full-Time /
On-site
Before jumping in on all the information about the role and what you can bring to the table, let us introduce ourselves real quick.

About us

Hi there! We are Insider, a B2B SaaS company that drives growth for its clients around the world. How are we achieving this? We are connecting data across channels, predicting future behavior with AI, and individualizing experiences from a single platform with the fastest time to value.

We announced that we unlocked our unicorn status after our Series D round. We are backed by top-notch investors including Sequoia Capital, QIA, Riverwood, Endeavor Catalyst and trusted by 1000+ brands from high-growth startups to the most prestigious Fortune 500 companies such as Singapore Airlines, Virgin, Nestle, Nissan, Samsung, Lenovo, Puma, MediaMarkt, IKEA, Allianz, Santander, Dominos, Avon, CNN, and the list goes on.

We are the #1 Leader everywhere! We are recognized as a leader in The Forrester Wave™ for Cross-Channel Campaign Management in Q3, 2021. We are also named a leader in 2021 Gartner® Magic Quadrant™ for Personalization Engines. But wait, there is more. For 21 quarters in a row, we’ve been ranked as a leader in G2 Mobile Marketing, Personalization, Customer Data Platform, and Customer Journey Analytics Grids.
We are also proud to become one of the very few female-led B2B SaaS unicorns in the world.

Behind all these achievements, there is an exceptionally talented and passionate team across 28 countries that moves fast and agile, creates cutting-edge products, and focuses on making an impact. If you want to join us in this journey, just keep reading.

And now? Now we are looking for a Senior Front-end Developer who 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. In 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, 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 !

A Senior Front-end Developer in Insider day in and day out;

    • 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,
    • provides communication with Product Managers, Designers, Teammates, and co-working teams in order to write efficient code,
    • produces new ideas to develop new features/setups or to improve existing applications and processes, develops POC applications when necessary to show ideas,
    • works closely with Back-End Developers to communicate with APIs
    • provides control of error channels to keep product quality at the highest level
    • writes code in a reusable, manageable, scalable way,
    • is responsible for the maintenance and performance of new features in Front-End,
    • aims to keep the code quality and information sharing at the highest level with daily code reviews,

We want you to join us while we are taking a step into the future if you:

    • have 4+ years of experience as a Front-end Developer,
    • have experience with HTML5, CSS3, Javascript,
    • have experience with Front End Dev Ops (NPM, WebPack, Gulp, Browserify, Babel, etc.),
    • have experience with Sass or other compiled CSS languages,
    • have experience in responsive web design,
    • have experience in developing and testing on multiple browsers, platforms and devices, including smartphones and tablets,
    • have a understanding of cross-browser compatibility issues and their solutions,
    • like to stay up to date on emerging technologies,
    • are knowledgeable about version control systems (such as Git),
    • have experience in optimizing page performance,
    • can write clean and semantic Front-end code,
    • are self-motivated, independent, organized and proactive, and can be highly responsive and flexible when working with multiple teams,
    • are open to developing and learning new technologies,
    • have a level of English knowledge that you will not have any problems while analyzing technical documents,
    • maybe have experience with MongoDB and AWS (in deploying and monitoring the app)

While exporting our technology to the world, we offer you:

    • “Tech Talks” with famous and groundbreaking people from the software world, “Dev Talks” where our Software Developers talk about their career steps, and many events where groundbreaking ideas are discussed,
    • Hackathons we organize inside that push the boundaries, programming challenges, and coding competitions,
    • free access to exclusive services such as Laracasts, Egghead, LinkedIn Learning, Blinkist, Masterclass, and Spotify,
    • Shareowner System that we offer to all Insiders who meet certain criteria,
    • Inclusive Private Health Insurance,
    • Multinet to cover all the yummy food expenses on a monthly basis,
    • the infamous Team Activities that are bursting with fun,
    • No Dress code! This is a fast and innovative startup, you can wear whatever you want.


We provide equal opportunity in a zero-discrimination workplace and not just welcome but also embrace everyone without regard to sex, race, color, nationality, religion, gender identity, sexual orientation, disability status, citizenship, or marital status.

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