About Insider One
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. We are the only vendor recognized as the #1 leader in all the capabilities marketing and customer engagement teams need.
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 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 communities across 30+ countries, driving initiatives in health, education, farming, animal rights, and increasing women's representation in STEM.
We are now looking for a Senior Software Engineer who will help our team create and implement a wide variety of web-based products using PHP and Go or Node.js, and wants to take their career one step further. Right now, 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 have now reached 25% of global users.
Our Product and Development teams are located in our Istanbul and Ankara offices.
Responsibilities
•Design, develop, and maintain scalable backend services and RESTful APIs using Laravel within a modular monolith architecture.
•Build and enhance multi-tenant SaaS features, ensuring proper data isolation and tenant-aware functionality.
•Write clean, well-tested, and maintainable code following Domain-Driven Design (DDD) principles, including Entities, Repositories, Managers, and DTOs.
•Collaborate with cross-functional teams to deliver new features and continuously improve existing functionality.
•Participate in code reviews, providing constructive feedback and maintaining high code quality standards.
•Work with code quality tools such as PHPStan, Rector, and Pint to ensure codebase consistency and reliability.
•Optimize database queries and implement caching strategies using Redis to improve performance.
•Troubleshoot and debug production issues, implementing robust and scalable solutions.
•Contribute to technical documentation and participate in architectural decisions.
•Leverage AI-powered development tools to enhance productivity and improve code quality.
Requirements
•Bachelor's degree in Computer Engineering or a related field.
•3+ years of software development experience.
•Strong hands-on experience with Laravel (must-have); familiarity with Symfony is a plus.
•Solid PHP knowledge, with experience in modern PHP practices (PHP 8.x features, strict types, readonly classes).
•Experience with package-driven development, modular monolith architecture, and Domain-Driven Design (DDD) patterns.
•Good grasp of MySQL and Redis; experience with Elasticsearch or other NoSQL technologies is a plus.
•Proficient with Git and familiar with Git workflows, including branching strategies, code reviews, and CI/CD pipelines.
•Experience with code quality tools such as PHPStan, Rector, or similar static analysis tools.
•Experience contributing to large-scale projects and collaborating effectively within technical teams.
•Level of English proficiency sufficient to analyze and understand technical documentation.
•Experience with AI-powered development tools such as Claude Code, GitHub Copilot, Cursor, or similar AI coding assistants.
•Hands-on experience with AWS (EC2, S3, SQS, or similar services).
Nice to have:
•Hands-on experience with Docker and containerized development environments.
•Familiarity with Vue.js or other modern frontend frameworks.
•Interest in or exposure to Go (Golang), with motivation to deepen expertise.
•Experience with multi-tenant SaaS architectures.
•Familiarity with queue systems such as Laravel Horizon or Redis queues.
Benefits
•Monthly meal allowance.
•Comprehensive private health insurance.
•Access to Spotify, LinkedIn Learning, Blinkist, MasterClass, Neoskola, and CloudGuru.
•Internal trainings covering AI fundamentals, coding, foreign languages, and personal development skills.
•A diverse team spanning 50+ nationalities.
•Eligibility-based "ESOP" shareowner program.
•Rewarding referral bonuses.
•Opportunities for volunteering and purpose-driven social impact projects.
•Year-round events including global retreats and team-building activities.
•Tech & Dev Talks events.
•Fully remote work from anywhere in Turkey.
