Senior Security Engineer - Red Team (Remote)

About Insider One Insider One brings together marketing tools and customer engagement solutions in one unified platform. Since our founding, we have grown into a global company with more than 1,500 team members representing diverse backgrounds, working from over 30 offices worldwide. Our platform uses artificial intelligence and an integrated Customer Data P…

Join us as a Senior Software Quality Assurance Engineer, where your expertise will contribute to maintaining the high standards of our platform.About Insider OneInsider One is the leading platform that integrates all essential tools for marketing and customer engagement teams, empowering them to achieve their utmost potential and become unstoppable.Founded with a vision to revolutionize the marketing landscape, we have grown from a small team to over 1,500 professionals from 50+ nationalities across 30+ offices globally. Our platform is driven by advanced AI technologies and features an integrated Customer Data Platform (CDP) that harmonizes data, personalization, and journey orchestration across a wide array of channels, including WhatsApp, SMS, Email, Web, App, and Site Search.Recently, we secured a remarkable $500M Series E funding round, led by General Atlantic, with backing from prominent investors such as Sequoia Capital, QIA, Riverwood, and Endeavor Catalyst. Our client base includes over 2,000 customers, ranging from fast-growing startups to renowned Fortune 500 companies like Samsung, Nike, L’Oreal, and IKEA.Celebrated as one of the few woman-founded, women-led B2B SaaS unicorns globally, we have received accolades from industry analysts and are recognized as the #1 leader in all the capabilities marketing and customer engagement teams demand. Explore our success stories and see why our clients choose us.

Join us at Insider One, the leading platform designed to empower marketing and customer engagement teams with the tools they need to excel.Who We AreAt Insider One, we are proud to be the #1 platform that consolidates marketing and customer engagement solutions, enabling teams to achieve their fullest potential and drive results.Our journey began with a small team and a bold vision to create a comprehensive platform that grants marketers access to cutting-edge technologies and emerging channels globally. Today, we boast a diverse team of over 1,500 members from more than 50 nationalities across 30 offices.With artificial intelligence at the core of our operations and an integrated Customer Data Platform (CDP), Insider One seamlessly combines data, personalized experiences, and journey orchestration across a wide array of channels, including WhatsApp, SMS, Email, Web, App, and Site Search.Recently, we celebrated one of the largest funding rounds in our industry, having secured a $500 million Series E led by General Atlantic. Our investors include prestigious firms such as Sequoia Capital, QIA, Riverwood, and Endeavor Catalyst, while our platform is trusted by over 2,000 clients, ranging from high-growth startups to Fortune 500 giants like Samsung, Nike, L’Oreal, and others.Insider One is honored to be recognized as one of the few woman-founded and women-led B2B SaaS unicorns globally. Our customer satisfaction and industry recognition underscore our leadership position in providing essential capabilities for marketing and customer engagement teams. Explore our impact yourself —check it out. We consistently excel and maintain our position at the forefront of the industry.

Join iyzico as a Quality Assurance Test Engineer, where you will play a critical role in ensuring the highest quality of our innovative payment solutions. In this position, you will design and execute test plans, identify bugs, and work closely with development teams to enhance our products. Your keen attention to detail and analytical mindset will be essential in delivering seamless user experiences.

Join our dynamic team as a Senior Quality Assurance Engineer where your technical expertise and exceptional communication skills will play a crucial role in the development lifecycle of innovative products across various exciting domains. At Commencis, we thrive in a fast-paced environment, and we are looking for individuals who are not only adaptive and collaborative but also curious by nature and always a step ahead.If you are ready to take on new challenges and contribute to meaningful projects, we invite you to become a part of our journey at Commencis!

ABOUT CODEWAYCodeway is a leading global consumer technology company that has amassed over 400 million users worldwide.Since our inception in 2020, we have successfully developed and expanded over 60 mobile applications spanning creativity, productivity, wellness, language learning, and entertainment.Our flagship applications — Retake AI, Cleanup, Learna, and DramaPops — consistently rank at the top of their respective categories globally. In 2024, we achieved the milestone of becoming the most downloaded app publisher on iOS, thanks to our innovative AI research, meticulous data-driven execution, and a steadfast commitment to product and marketing excellence.Our diverse team of over 300 professionals, located in Istanbul and Barcelona, embodies curiosity, passion, trust, and ownership in every project. Recognized as a #1 LinkedIn Top Startup and a Great Place to Work in Europe, Codeway is the ideal environment for ambitious individuals to achieve their best work.We are at the forefront of developing the next generation of consumer technology and redefining the possibilities of mobile applications.This is Codeway. This is our ethos. Join us!POSITIONAs a Quality Assurance Engineer, your role is pivotal in our product development pipeline. At Codeway, QA transcends traditional testing; it involves taking complete ownership of a product's success just before it reaches millions of users globally. Excited? Read on!We are on the lookout for a Quality Assurance (QA) Engineer to design and implement exploratory and automated tests, ensuring the quality of our mobile products across various categories.In this role, you will be integral to Codeway’s product development process. The ideal candidate will conduct rigorous testing prior to product launches, ensuring that the software operates seamlessly and meets user expectations while remaining cost-effective. Your responsibilities will include crafting and executing test plans, debugging issues, and defining corrective actions. You will also be responsible for reviewing system requirements and monitoring quality assurance metrics (e.g., defect densities and open defect counts). Ultimately, your goal will be to oversee all phases of software development to identify and resolve system malfunctions to uphold our high-quality standards. If you possess an engineering background and thrive on delivering comprehensive solutions to software quality challenges, we would love to connect with you!

About CodewayCodeway is a leading global consumer technology company, boasting over 400 million users worldwide. Since our inception in 2020, we have successfully developed and scaled more than 60 mobile applications across various domains including creativity, productivity, wellness, language learning, and entertainment.Our flagship applications—Retake AI, Cleanup, Learna, and DramaPops—are market leaders in their respective categories. In 2024, we proudly became the most downloaded app publisher on iOS, fueled by innovative AI research, precise data-driven strategies, and a steadfast commitment to product excellence and marketing.With a vibrant team of over 300 individuals located in Istanbul and Barcelona, we foster a culture of curiosity, passion, trust, and ownership in everything we create. Recognized as the #1 LinkedIn Top Startup and a Great Place to Work in Europe, Codeway is where ambitious individuals come to achieve their greatest professional endeavors.We are redefining consumer technology and reimagining the potential of mobile applications. This is Codeway. This is our journey. Join us!Position OverviewAs a Quality Assurance Engineer at Codeway, you will play a pivotal role in our product development lifecycle. The QA function extends beyond mere testing; it encompasses taking complete ownership of the product's quality prior to its global launch. If this excites you, we want to hear from you!We are seeking a motivated QA Engineer to design and execute both exploratory and automated tests, ensuring the quality of our diverse mobile products.Your responsibilities will include developing and implementing test plans, debugging, and proposing corrective actions. You will also review system requirements and monitor quality assurance metrics such as defect densities and defect counts.Ultimately, your role will involve overseeing every stage of software development to identify and remediate any issues, ensuring our products meet stringent quality standards. If you possess an engineering background and enjoy solving software quality challenges, we would love to meet you.Key ResponsibilitiesAnalyze requirements, specifications, and technical design documents to provide timely and constructive feedback.Develop comprehensive and well-structured test cases and scenarios.

Join Us at Spyke GamesAt Spyke Games, we pride ourselves on being a premier mobile gaming company, founded by industry veterans with a decade of experience in building and scaling successful gaming ventures.Our mission is to create the next generation of mobile game franchises that will captivate millions globally for years to come. We are assembling a diverse team of the brightest and most talented individuals, all united by a shared passion for gaming and a commitment to collaboration and innovation. Our workplace is characterized by a vibrant, energetic culture where every team member is encouraged to embrace their inner 'geek' and contribute to our exciting journey.We are seeking a dedicated Quality Assurance Specialist to join our team. In this dynamic and fast-paced environment, you will collaborate with some of the most creative minds in the industry. Your role will be pivotal in the product development process, where you will identify potential risks and ensure the highest quality standards are maintained throughout testing.

About Insider One Insider One brings together marketing and customer engagement tools in a single platform. Since our early days, the company has grown to a team of over 1,500 people, representing more than 50 nationalities and working across 30 locations worldwide. Our platform relies on AI and a comprehensive Customer Data Platform (CDP) that connects data, personalization, and journey orchestration across channels like WhatsApp, SMS, Email, and more. We recently raised $500M in Series E funding, backed by investors such as Sequoia Capital and General Atlantic. More than 2,000 clients, from startups to Fortune 500 companies like Nike and Samsung, use our solutions. Insider One is also recognized for its commitment to diversity as one of the few woman-founded B2B SaaS unicorns globally. Role Overview: Senior Software Engineer - Golang This role focuses on building and improving solutions that help businesses grow through better marketing and customer engagement. As a Senior Software Engineer working with Golang, the work will involve designing and developing features that support our platform’s mission. Location Istanbul, Turkiye

About the Role Commencis is looking for a Senior Java Software Engineer in Istanbul. This role focuses on building and improving software products that support business growth. The position centers on Java, with responsibilities that include enhancing current applications and designing new features to address client needs. What You Will Do Develop and maintain Java-based software solutions Improve existing applications by adding new functionalities Work closely with team members to solve technical challenges Help ensure software meets evolving client requirements Who We’re Looking For Deep experience with Java development Strong problem-solving skills Interest in building software that makes a real impact Comfort working in a collaborative, team-based setting

Bigger Games is on the lookout for a Senior Software Engineer who is ready to embrace the exciting challenges of developing chart-topping games. At Bigger, our Game Developers are not just coders; they are innovators and designers as well. In collaboration with the Product Team, you'll create immersive gaming experiences that will captivate millions of players around the globe. As you craft exceptional experiences for our users, you'll tackle intricate engineering challenges along the way.If you're a dedicated Senior Software Engineer with a passion for gaming and a desire to contribute to the creation of enjoyable games, we invite you to join our team!ABOUT THIS ROLE:Develop top-notch games that offer unforgettable experiences to millions of players.Participate in all facets of game development—including Game Design, Logic, User Experience, Graphics, and UI design—and ensure the quality and longevity of various games with meticulous attention to detail.Work collaboratively with Product Managers, Game Artists, and Marketing teams to ensure the delivery of an unparalleled user experience.Generate new ideas for game design, features, and projects that push the boundaries of creativity.Take ownership of your projects alongside the Product Team, enjoying significant individual responsibility.YOU COULD BE A GREAT FIT IF:You hold a Bachelor’s Degree in Computer Science and have at least 6 years of experience as a software engineer.You have experience with Java Spring Boot-based backend systems and possess a deep understanding of Java and its related technologies.You are familiar with Java, Spring, Redis, and AWS Cloud Systems.You have robust engineering skills and a solid foundation in programming fundamentals.You are knowledgeable in software architecture design, Object-Oriented Programming (OOP), and design patterns.You are passionate about mobile games and pay close attention to detail and code quality.BONUS POINT IF:You’ve played Kitchen Masters and explored its gameplay. If you haven't, now's the perfect time to start!You have a keen interest in the gaming industry and are eager to expand your knowledge.You thrive in fast-paced, dynamic environments.BENEFITS:Be part of a premier team, learn from industry leaders, and contribute to creating games that players adore.Enjoy competitive salary packages.Flexible work arrangements.

About Us Founded in 2017, Good Job Games is dedicated to creating unique and memorable experiences for players worldwide through innovative gaming products. With our games reaching over 3.5 billion users globally, we pride ourselves on cultivating a diverse team of extraordinary talents and fostering a culture of creativity and collaboration. We invite passionate individuals to join our dynamic team! Your Role We are seeking a dedicated Senior Software Engineer to design and implement robust backend systems that will drive Good Job Games forward. You will play a critical role in developing high-performance game services and internal tools that enhance our operational efficiency. Designing and building distributed, high-performance shared game services Creating internal tools for data analysis, operations, and automation Providing support and empowerment to teams across Good Job Games Mentoring and guiding less experienced team members

Speechify builds tools that remove reading barriers and support learning for millions worldwide. The team includes nearly 200 people working remotely across the globe. Collaboration happens in a fully distributed setup, where technical skill and new ideas drive progress. More than 50 million users rely on Speechify’s text-to-speech technology on platforms such as iOS, Android, Mac, and Chrome. The product has earned recognition, including Chrome Extension of the Year and Apple’s 2025 Design Award for Inclusivity. Role overview The Platform Software Engineer joins the Platform team to design, build, and maintain core backend systems. Projects span payment processing, API integrations, and other foundational services. The work directly supports a seamless user experience across Speechify’s products. What you will do Develop and maintain backend services that support Speechify’s suite of applications Work on payment processing, API integrations, and other core platform features Collaborate with colleagues in a flat organizational structure Contribute to a culture where technical expertise and initiative are recognized What matters here Strong work ethic and follow-through Clear, effective communication Strategic thinking and adaptability Dedication to delivering high-quality user experiences Interview process The hiring process aims to wrap up within a week. Candidates participate in multiple technical interviews to demonstrate their skills. Location This is a remote role based in Istanbul, Turkey.

Join our innovative team at Dream Games as a Senior Software Engineer! You will play a crucial role in the game development process, contributing to programming aspects such as graphics, game logic, and user interface using Unity. We value talent over specific experience, so even if you don't have prior game development knowledge, your strong software engineering skills can help create exceptional gaming experiences.At Dream Games, every team member has the opportunity to influence the final product and make a significant impact on the organization. If you're eager to be part of a fast-growing company and are ready to embark on an exciting journey, we want to hear from you!

Role overview Speechify is looking for a Senior Software Engineer to focus on Windows and desktop application development. The role is based in Istanbul, Turkey. The main goal is to create software that enhances how users experience and interact with Speechify’s products on desktop platforms. What you will do Develop and maintain applications for Windows and desktop environments Collaborate with team members from concept through launch on new projects Deliver software that meets strong quality and usability standards Location This position is located in Istanbul, Turkey.

Role overview insiderone is looking for a Senior Information Security Engineer to support the protection of its digital assets and improve security practices. This remote role is based in Istanbul, Turkiye. Main responsibilities Apply advanced technical skills to strengthen the company's security posture Implement measures that safeguard systems and sensitive data Collaborate with teams across insiderone to help maintain compliance with industry standards Location This position is remote and based in Istanbul, Turkiye.

We are seeking a passionate and skilled Senior Software Engineer (.NET) to become a vital member of our dynamic team. In this role, you will be entrusted with designing, developing, and maintaining scalable and high-performance backend systems that drive our innovative products and services. Your expertise will help transform business and product requirements into solid technical solutions, ensuring that our backend services are reliable, secure, and perform at their best. You will collaborate closely with cross-functional teams, which include frontend developers, DevOps engineers, product managers, and solution architects, to create efficient, scalable, and maintainable backend architectures utilizing cutting-edge .NET technologies. Your contributions to architectural discussions and adherence to best practices will be essential in supporting the overall quality and sustainability of our codebase. If you are a naturally curious individual, adaptable, collaborative, and always looking to stay ahead, we invite you to join us at Commencis!

Join insiderone as a Senior Software Engineer specializing in B2B marketing technology solutions using Golang. In this pivotal role, you will be responsible for developing and optimizing high-performance applications that drive business growth and enhance user experience. You will collaborate with cross-functional teams to design innovative solutions that meet the needs of our clients in the ever-evolving digital landscape.

Join Insider One as a Senior Security Engineer on our Blue Team, where your expertise will be critical in safeguarding our innovative marketing platform.About UsAt Insider One, we operate as the leading platform that integrates all essential tools for marketing and customer engagement teams, empowering them to achieve their fullest potential and become unstoppable.Our journey began with just six desks and a bold vision to provide a unified platform that democratizes access to cutting-edge technologies and emerging channels for marketers globally. Today, we proudly support over 1,500 talented individuals representing more than 50 nationalities across 30 offices worldwide. Our platform, driven by AI and featuring an integrated Customer Data Platform (CDP), seamlessly connects data, personalization, and journey orchestration through a wide array of native channels, including WhatsApp, SMS, Email, Web, App, and Site Search.Recently, we secured a remarkable $500 million in Series E funding, led by General Atlantic, with support from prominent investors such as Sequoia Capital, QIA, Riverwood, and Endeavor Catalyst. We are proud to serve over 2,000 clients ranging from dynamic startups to esteemed Fortune 500 companies like Samsung, Nike, L’Oreal, Singapore Airlines, Nestlé, Nissan, Lenovo, Puma, and IKEA.Insider One is celebrated as one of the few woman-founded, women-led B2B SaaS unicorns globally. Our commitment to excellence is recognized by industry analysts, establishing us as the leading vendor in all the capabilities essential for marketing and customer engagement teams. Don't just take our word for it — see for yourself. We continually surpass expectations and maintain our leadership position in the industry.