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We are looking for an iOS Engineer to join our Mobile group. You will be responsible for development and maintenance of the company's iOS application aimed at a range of iOS devices. Join us and take part of a growing product with more than 6 million downloads!
What am I going to do?
Design and maintain our company application for the iOS platform.
Ensure the performance, quality, and responsiveness of applications.
Develop new features every sprint.
Collaborate with cross-functional teams to define, design, and ship new features.
Continuously discover, evaluate, and implement new technologies to maximize development efficiency.

our companys Platform-Core team is seeking a Senior Software Engineer who will be a positive addition to our team. As a Senior Software Developer at our company, you will build high-performance service APIs that drive our website and devices. The right person for this role is passionate about building systems that are optimized for scalability, efficiency, quality, and uptime. I
If you are someone who gets excited with sub-millisecond service response time in a fast-growing scalable platform, then this is the role for you.
You will be working with cutting-edge technologies such as Kotlin, Nodejs, Typescript, Kafka, AWS, Kubernetes, MongoDB, Redis, and many more...
What am I going to do?
Manage the full development lifecycle: architecture, design, development, deployment, and monitoring.
Develop highly scalable, reliable, and maintainable core services with robust testing.
Collaborate closely with team members to meet product and business objectives.
Explore and experiment with emerging technologies to ensure future scalability and growth.

we are looking for an Program Manager, Internal AI Solutions to join the Production Operations team and work closely with our AI department. This role bridges the gap between technology and operations, ensuring our company adopts the most effective AI-driven tools and automation to enhance efficiency, streamline internal work processes and drive operational excellence.
What am I going to do?
You will identify, evaluate, and implement AI-driven tools (internal and third-party) to optimize workflows and automate processes.
You'll collaborate with customer care, business, product, and engineering teams to ensure seamless integration and efficiency.
As part of your job you will interview internal teams, map processes, analyze workflows to identify bottlenecks which need to be resolved.
You have a strong analytical mindset, excellent project management skills, and a passion for AI-driven innovation in business operations.

We're seeking an exceptional Senior Big Data & Machine Learning Engineer who will architect the future of our AI systems and drive technological innovation within our high-performing team.
What you'll be doing
As a key member of our AI team, you will:
Design Scalable Architecture - Architect, implement, and optimize robust ML pipelines that handle massive datasets with elegance and efficiency, from collection through preprocessing to production deployment
Pioneer Technical Solutions - Apply state-of-the-art machine learning technologies to solve complex challenges while maintaining the agility to incorporate emerging innovations
Drive Cross-Functional Excellence - Collaborate strategically with data scientists, software engineers, architects, and product leaders to transform advanced ML solutions into production-ready systems

we are looking for an experienced DevOps Engineer, who will work closely with the developers teams, design and implement improved development processes and tools.
Team up with the DevOps team to design and implement scalable systems that will keep our company running smoothly and support our significant business growth.
You will join an innovative, high-performance team and work with cutting-edge technologies in a dynamic and agile environment.
our companys Technology Stack sample:
AWS, Kubernetes, Terragrunt, Ansible, Jenkins, ArgoCD, Service Mesh, Kong & Nginx, CloudFlare, Hashicorp Vault/Consul, Kafka, RabbitMQ, Prometheus, Grafana, VictoriaMetrics
Programming languages: Python, NodeJS, Go, Kotlin
What am I going to do?
Maintain and build a large-scale, highly available cloud infrastructure focusing on K8S.
Improve resiliency and cost efficiency of our cloud infrastructure.
Automate tasks and error-handling scenarios.
Develop and adopt new tools to make Development and Operations processes at our company more efficient.
Collaborate with developers to optimize service performance, reliability, and scale.
Evolve and maintain our companys AWS infrastructure by improving and adopting new services.
Maintain our company's availability by participating in DevOps on-call shifts.
Mentor DevOps engineers.

Are you ready to work on large-scale web projects and features used by millions worldwide? If so, youre in the right place.
As a Full Stack Engineer on the company's team, youll be responsible for implementing core features, building infrastructure, and finding innovative solutions. Youll work with cutting-edge technologies, including Kotlin, Node.JS, Golang, Ruby, Python, React, Kafka, MongoDB, Redis, Elasticsearch, Kubernetes, AWS, and more. Were looking for a top-tier engineer ready to level their skills in an exciting and fast-paced environment.
What am I going to do?
Develop features and products that are visible to all our company's customers.
Design, develop, test, and deploy high-traffic features, focusing on scalability and performance.
Build infrastructure to enhance your work, such as packages, modules, services, APIs, data pipelines, and reusable components.
Collaborate closely with a product manager and a team of talented engineers.
Take ownership of your team's technical domain, including refactors and modernization projects, from design to production.
Run technical design, implementation, and deployment end to end.

our companys Platform-Core group is looking for a Senior Software Engineer to join our high-impact team. This is a unique opportunity to help shape the backbone of a global platform, enabling engineers to build scalable and resilient services.
As a Senior Software Engineer at our company, youll design and build high-performance APIs and infrastructure that power our core systems. Youll work on developing frameworks used by services that demand supporting millions of users across the world.
The right person for this role is passionate about building systems that are optimized for scalability, efficiency, quality, and uptime. If you are someone who gets excited with sub-millisecond service response time in a large scalable platform, then this is the role for you. You will be working with cutting-edge technologies such as Kotlin, Nodejs, Typescript, Kafka, AWS, Kubernetes, MongoDB, Redis, and many more...
What am I going to do?
Manage the full development lifecycle: architecture, design, development, deployment, and monitoring.
Develop highly scalable, reliable, and maintainable core services with robust testing.
Collaborate closely with team members to meet product, tech and business objectives.
Explore and experiment with emerging technologies to ensure future scalability and growth.

Were looking for a brilliant, hands-on Software Development Team Leader to join our world-class technology team. In this role, you'll have both the autonomy and the authority to lead a Full Stack development team in building exceptional products throughout the agile development lifecycle. Youll be joining a high-velocity, highly technical group of passionate builders behind our companys core platforms.
What am I going to do?
Lead a team of talented developers through the full product lifecycle: from architecture and design to development, testing, and production.
Stay hands-on and contribute to the codebase.
Collaborate closely with product managers, designers, and data professionals to drive innovation and deliver value.
Mentor, grow, and support the team, helping them reach their full potential.

We're looking for a talented Backend Engineer to join our algo & ML team. You'll play a pivotal role in enhancing the search experience for 10s of millions of users worldwide, designing and implementing advanced algorithms that make our platform more intuitive and effective.
What am I going to do?
Develop and optimize the core retrieval systems that form the backbone of our search architecture, focusing on enhancing the recall and precision of search results.
Utilize technologies like Elasticsearch, Lucene, Vespa, and machine learning models to build scalable search retrieval systems solutions that form the primary source for our search platform.
Work closely with data scientists, product managers, and fellow engineers to integrate machine learning models and algorithms.
Use search metrics such as nDCG, MRR, and user behavior analysis to pinpoint improvements, and conduct rigorous A/B testing and online experiments to validate changes and assess their impact.
Address complex business challenges related to retrieval by breaking them down into manageable components, conducting in-depth research, and pioneering innovative features for search retrieval.

Step into the role of Senior Developer and help us build innovative solutions that solve challenging technical problems and drive our products to the next level. Youll work hands-on with cutting-edge technologies, architect scalable systems, and collaborate with a like-minded team that values clean code, creativity, and continuous improvement. Your impact will be felt across the entire stack, whether youre optimizing performance or designing robust features that align with our long-term vision. Were all about growthyours and oursand youll have the autonomy, resources, and support to sharpen your skills and bring bold ideas to life. If youre ready to leave your mark and level up both in your craft and career, we want to build it with you.
What you'll be doing
Design and lead complex features for both Android and iOS
Integrate multiple third-party ad networks
Work closely with our server teams to define and build our next-generation solutions
Take part in product definition by working with our product managers

We are seeking a highly skilled Technical Lead to own regulatory compliance aspects within our software development lifecycle, along with the detection, evaluation, and management of open-source initiatives across the organization. This role sits within the CTO office and reports directly to the Director of Architecture.
What am I going to do?
Regulatory Compliance:
Own and oversee technical compliance with key regulatory frameworks including GDPR, SOC2, and privacy/user safety regulations.
Work closely with development and product teams to ensure software development processes and products meet regulatory standards.
Proactively identify compliance risks and recommend solutions.
Facilitate audits and assessments by providing detailed documentation and evidence.
Open Source Management:
Identify opportunities within the organization to develop and release software as open source.
Manage and oversee licenses for open-source software developed by the company, ensuring compliance with legal and regulatory standards as well as company IP requirements.
Take responsibility for open-source creation and release lifecycle, including quality and standards validation, versioning, release management, feedback collection, contribution and attribution management, documentation management, and public announcements.
For each open-source initiative, maintain a clear and public roadmap aligned with our companys goals and objectives.
Maintain and cultivate the community surrounding our companys open-source projects, encouraging collaboration and contribution.
Develop strategies, process and tooling to efficiently manage open-source project lifecycles.
Technical Leadership:
Serve as a hands-on technical expert, reviewing, validating, and participating in code contribution across multiple projects.
Provide mentorship to developers and promote best practices around regulatory compliance and open source utilization.
Engage with cross-functional teams to advocate and implement secure and compliant technical architectures.

we are looking for an outstanding and passionate full stack developer to join our team where you'll have the opportunity of:
True Full-Stack Ownership - Design, build, test, deploy and innovate across the entire technical stack.
Startup Energy, Enterprise Resources - Enjoy the nimble culture of a startup backed by global infrastructure.
Boundless Growth Potential - Thrive in a flat organizational structure where impact is king.
End-to-End Involvement - Participate in the full product lifecycle from concept to delivery
What you'll be doing:
Design, develop, and maintain scalable backend systems, written in Go, Ts & Python
Build and optimize data processing pipelines for large datasets using databricks
Contribute to architectural decisions and technology selection
Translate complex business requirements into technical implementations that create measurable value

We are seeking a highly skilled and experienced Staff Software Engineer to join our MLE-Backend group. The ideal candidate will have a strong background in distributed systems, data engineering and software engineering, and will be responsible for leading the design, development, and deployment of top quality data pipelines, data lake and an ML feature platform.
What you'll be doing
System Design and Architecture: Develop and maintain robust, scalable, and efficient distributed systems and data pipelines to help build the new generation of ironSource's ML feature platform.
Research and Innovation: Stay current with the latest advancements in machine learning data pipelines, feature stores, and apply innovative techniques to improve data aggregations, monitoring, cleaning & filtering and preparing for ML training.
Cross-Functional Collaboration: Work closely with data scientists, software engineers and product managers to build the data lakes and data pipelines.

Were looking for a Product Manager to lead our companys LLM Infrastructure - a foundational role driving the development of systems that enable smarter, AI-powered decision making across the marketplace.
As the PM for LLM Infrastructure, youll shape the capabilities that turn unstructured data into structured, explainable, and actionable insights. Youll work closely with ML engineers, data scientists, and product leaders to design scalable tools and frameworks that support use cases across personalization, matching, search understanding, trust and safety, and more.
Your mission will be to build reliable and extensible LLM-based systems that serve as core building blocks for future-facing product innovation.
What am I going to do?
Define the product vision and roadmap for our companys LLM infrastructure, aligning with long-term company strategy and cross-team needs.
Lead the development of scalable systems that extract meaning and structure from conversational and behavioral data.
Drive adoption of LLM capabilities across our company by building unified APIs, shared frameworks, and streamlined integration pipelines.
Partner with engineering, data science, and research teams to deliver high-quality infrastructure that powers AI-native product experiences.
Collaborate on system design and architecture decisions to ensure alignment between technical solutions and product scope.
Ensure reliability, scalability, explainability, and performance in all LLM-based systems.
Manage technical complexity and connect infrastructure efforts with clear business value.

We are looking for a Risk Operations Manager to join our Risk team, who is passionate about elevating trust and customer protection within the marketplace.
In this role, youll work closely to our operational team and be their main point of contact. Youll be responsible to monitor and analyze key risk indicators, performance metrics, and operational data to identify trends, patterns, and areas for improvement, the position is temporary for 6 months.
Our work model is hybrid, combining remote and on-site work. This allows us to get things done when and where we are most productive.
What am I going to do?
Handle Risk escalations of the Risk Operations team located in Belgrad.
Conduct monthly QA for risk tasks to ensure high-quality performance and schedule training sessions as needed
Create and update risk policies and procedures and tailor the content for agents.
Proactively identify opportunities for innovation and improvement to reduce fraud on the platform and optimize processes
Drive continuous improvement in operational efficiency and effectiveness
Collaborate closely with Customer Support, Product, Data, and other departments to foster effective communication and execution.