Senior Backend Engineer (PHP) - Remote

Sorry, this job was removed at 08:15 a.m. (CST) on Tuesday, Dec 09, 2025
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Hiring Remotely in İstanbul, Fatih, İstanbul
In-Office or Remote
Information Technology • Internet of Things
The Role
Before jumping into all the information about the role and what you can bring to the table, let us introduce ourselves real quick.

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 Senior Backend Engineer, 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 and Ankara offices, 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!: https://www.stackshare.io/companies/useinsider 

A Senior Backend Engineer in Insider day in and day out:

  • develops programs, applications, and websites using PHP (Laravel), GO, and Node.js,
  • improves performance, scalability, and availability of our systems,
  • develops cutting-edge web applications with a user-centric approach,
  • troubleshoots any issues as they arise, foresee and address potential problems proactively,
  • collaborates with co-developers and other related departments to ensure maximum efficiency and arrive at world-class results,
  • sends regular updates about project status to related stakeholders,
  • evaluates and takes on tasks based on resolution priority and the greater company vision/goals.

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

  • have a Bachelor’s Degree from Computer Engineering or related departments,
  • have 4+ years of software development experience,
  • have got a good grasp of MYSQL, Elasticsearch, and/or NoSQL technologies such as Redis,
  • have hands-on experience working with Laravel,
  • know  PHP (Laravel or Symfony) and Go or Node JS, and you’re passionate to learn them all,
  • are familiar with software code tools such as Git, etc.,
  • know your way around Vue.js,
  • have experience driving technical projects, prioritizing work, identifying dependencies, facilitating technical decisions and cross-functional team discussions,
  • have a level of English knowledge where you will not have any problems analyzing technical documents,
  • hands-on experience in AWS is a plus,
  • hands-on experience in Docker is a plus

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,
  • Inclusive Private Health Insurance,
  • Smart Work Model side benefits to support monthly food expenses,
  • 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.
  • Remote Work! Work anywhere you'd like in Turkey.

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.

Please follow Insider on LinkedIn, Instagram, Youtube, and Medium!

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The Company
HQ: Kağıthane, Istanbul
1,162 Employees
Year Founded: 2012

What We Do

Insider—one platform for individualized, cross-channel experiences—enables enterprise marketers to connect customer data across channels and systems, predict their future behavior with an AI intent engine and individualize customer experiences. Marketers use Insider’s platform to deliver experiences across channels like Web, App, Web Push, Email, SMS, and Messaging Apps (WhatsApp, Facebook Messenger, RCS).

Insider recently unlocked unicorn status and NASDAQ congratulated the company for becoming one of the few woman-founded, women-led B2B SaaS unicorns in the world. Insider was named as the #1 Leader in The Forrester Wave for Cross-Channel Campaign Management 2021 and Gartner Magic Quadrant for Personalization Engines 2021. The company has been named #1 Leader on G2’s Mobile Marketing Software and Personalization Grids with a 4.6/5 rating for 20 consecutive quarters. CrunchBase recently ranked Insider’s co-founder and CEO Hande Cilingir as one of the top women CEOs outside the US.

Many of the most prestigious Fortune 500 companies and top brands in retail, automotive, and travel use Insider to deliver AI-backed personalized experiences that exceed customer expectations. Insider is trusted by over 1,200 global businesses, including Singapore Airlines, Virgin, Toyota, New Balance, IKEA, GAP, L’Oreal, Samsung, Newsweek, MediaMarkt, Nissan, AVIS, Marks & Spencer, Allianz, Madeira Madeira, Santander, BBVA, Pizza Hut, Avon, and CNN.

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