Backend Engineer

• Design, develop, and maintain scalable backend services using Go.
• Build and support REST and gRPC APIs.
• Develop event-driven integrations using Kafka and/or RabbitMQ.
• Work with PostgreSQL and optimize database interactions.
• Take ownership of services throughout the full lifecycle, from design and implementation to deployment and production support.
• Ensure system scalability, high availability, reliability, and performance.
• Write and maintain backend tests.
• Monitor and troubleshoot services using Grafana and Prometheus.
• Collaborate with distributed international teams in an Agile/Scrum environment.
• Contribute to the integration of AI-powered functionality where applicable.

Middle/Senior Go Developer

• Lead the design of system architecture, ensuring scalability, reliability, and performance for current and future needs
• Perform thorough code reviews, ensuring best practices, backward compatibility and maintainability of the solution
• Analyze and improve the performance of existing applications, identifying bottlenecks and proposing innovative solutions
• Ensure adherence to best security practices in the development and deployment of solutions
• Oversee a complex ecosystem of Payment Orchestrators, Global Processors, and Local Payment Methods, ensuring that our players experience zero friction from purchase to withdrawal
• Lead the seamless integration of third-party Gateways, Vaulting services, and Alternative Payment Methods across diverse global markets
• Own the end-to-end production health of the payment stack. Implement advanced monitoring, automated reconciliation, and rapid-response protocols for transaction failures
• Serve as the technical bridge between development, QA, and product teams to ensure alignment on solutions and deliverables
• Collaborate with product and project managers to plan iteration scopes and ensure timely delivery
• Be a dependable point of contact for critical decision-making and delivery

Lead Java Engineer, Payments

• Configure and maintain website integrations, including event tracking, SPA fixes, cart tracking, and catalog integrations
• Implement and support Email Service Provider integrations and synchronization workflows
• Execute migration and replatforming activities with comprehensive validation and testing
• Develop custom onsite JavaScript solutions for campaigns and interactive user flows
• Build and support Airflow DAGs for recurring data processing workflows
• Configure dynamic email content and SKU-level recommendation tracking
• Analyze Customer requests and assess technical feasibility of solutions
• Develop integrations with third-party marketing and email platforms
• Investigate and resolve production issues and perform root cause analysis
• Collaborate with account managers, QA engineers, and implementation specialists
• Participate in technical consultations and onboarding alignment meetings

Junior JavaScript Developer

• Design and implement robust tools, algorithms, and pipelines using UE Procedural Content Generation, C++, and Blueprints.
• Collaborate with Game Designers to translate feature specs into modular, reusable tools and gameplay systems.
• Maintain clean and scalable codebases - contribute to refactoring, debugging, and performance optimization.
• Take ownership of assigned features and follow them through delivery and polish phases.

C++ Tools Developer

• Lead a team of talented C++ developers within PC & Console projects development, with particular focus on porting of existing and future game titles to PlayStation, Xbox, and Nintendo Switch.
• As leader of the Core tech team, work closely with Technical Directors on technical analysis and evaluation of the potential projects and opportunities.
• Collaborate closely with the game design, art, and production teams to ensure a seamless and high-quality game experience on all platforms.
• Optimize game performance for various console hardware, including CPU, GPU, and memory utilization.
• Implement platform-specific features and functionality, such as platform-specific APIs, achievements, and controller support.
• Ensure that games meet platform certification requirements, working closely with quality assurance and platform holders.
• Actively participate in code reviews, technical discussions, and team meetings to contribute to overall team growth and development.
• Contribute to internal knowledge base development in the areas of C++, Unreal Engine, PC & Console.
• Provide technical guidance and mentorship to junior developers and assist in their professional growth.
• Continuously research and stay up-to-date on the latest trends, technologies, and best practices in console game development.

Lead C++ Developer – Unreal Engine

• API Development: Design, build, and maintain RESTful APIs using .NET C#, focusing on performance, reliability, and security.
• Entity Framework & SQL: Develop efficient data models using Entity Framework Core, and write optimized SQL queries for relational databases like SQL Server.
• Cloud Transition Support: Contribute to new development efforts that utilize Azure services (e.g., Azure Functions, App Services, Azure SQL) as we begin migrating from on-prem infrastructure.
• Machine Learning Integration: Collaborate with stakeholders to integrate machine learning models via RESTful APIs or Azure ML services.
• Clean, Maintainable Code: Follow best practices to write testable, maintainable, and well-documented code.
• Cross-Team Collaboration: Work closely with fellow developers and business partners to deliver secure, scalable solutions.
• CI/CD Practices: Support continuous integration and delivery efforts using tools like GitHub Actions.
• Problem Solving: Investigate and resolve performance issues, bugs, and bottlenecks in existing systems.

Net Developer

• Розробка MarTech-платформи
• Розробка та підтримка бекенду платформи автоматизації Apple Search Ads на NestJS.
• Реалізація нових функціональностей та інтеграцій із Apple Search Ads API, App Store Connect API та іншими зовнішніми сервісами.
• Підтримка високої продуктивності системи при роботі з великими обсягами маркетингових даних.
• Розробка внутрішніх продуктів
• Створення та розвиток нового продукту KissMyAso — від проєктування архітектури до запуску в production.
• Розробка та покращення custom Admin UI для внутрішніх користувачів Growth-команди.
• Участь у розвитку внутрішньої MarTech-екосистеми компанії.
• Робота з даними та інфраструктурою
• Розробка фонових задач та пайплайнів обробки даних (BullMQ, cron jobs).
• Проєктування схем даних, написання міграцій та оптимізація роботи PostgreSQL / TimescaleDB.
• Робота з Drizzle ORM та оптимізація складних SQL-запитів.
• Якість розробки
• Покриття функціоналу тестами (Jest).
• Співпраця з Growth-командою (ASA / ASO) для створення продуктів, які вирішують реальні бізнес-задачі.

Full Stack Developer, Node.js, React

• Lead, mentor, manage and inspire a diverse agile team of backend developers across different locations, alongside hands-on coding
• Actively participate in the design, development, and maintenance of backend systems and applications while analyzing business requirements to create scalable, high-performing, and testable solutions
• Collaborate closely with product managers, client developers, scrum masters, and other stakeholders to deliver high-quality solutions
• Effectively manage and integrate the contributions of a full-stack web developer within the backend team’s scope.

Backend Team Lead

• Розробка нового функціоналу на B2B SaaS-платформі у сфері HR Tech
• Поліпшення наявних можливостей платформи
• Співпраця з продакт-дизайнером, Backend- та Frontend-розробниками, QA-інженером, проєктним менеджером та стейкхолдерами з боку клієнта
• Вплив на розвиток продукту та технічні рішення

Ruby on Rails Developer

• Participate in all phases of the SDLC as part of a cross-functional product team. This includes, but is not limited to, requirements analysis, design, implementation, testing (unit, integration, and service tests), building, deployment, and operation of new product increments, handling change requests, defect resolution, spikes, and proof-of-concepts
• Ensure high-quality solutions by maintaining acceptable test coverage aligned with the Definition of Done criteria
• Be a proactive team player, contributing actively to the group’s efforts to complete tasks and achieve goals
• Adhere to and drive modern software engineering practices through design reviews
• Engage in mentorship and knowledge sharing within the team and the Engineering organization

Senior Backend Engineer – .Net

• Architect & Build: Design and deliver agentic workflows and scalable microservices, primarily using Python, within a distributed system architecture.
• AI Integration: Lead the integration of Generative AI capabilities, including LLM APIs, RAG pipelines, and agentic workflows into our production systems.
• Agentic Operations & Observability: Implement operational practices, observability, and autonomous monitors (e.g., detecting intelligence drift or hallucinations) to ensure AI reliability in production.
• Elevate Engineering: Drive overall engineering quality and speed by implementing AI-SDLC practices, ensuring high standards through rigorous code reviews, test automation, and by establishing continuous, trace-based quality evaluation for all software and agentic components.
• Mentor & Innovate: Evaluate emerging AI tooling, mentor fellow engineers, and contribute directly to our technical roadmap and Agentic AI-SDLC and Production Operations.

Software Engineer – Full-Stack, Backend, Applied AI

• Design and build backend microservices for the squad’s modules (Identity/RBAC/MFA, number search, purchase and porting, onboarding automation, CDR and billing pipelines)
• Integrate with external carrier, telecom, and third-party APIs (Operator Connect, number/porting providers, ServiceNow, payment and billing systems)
• Implement event-driven flows and long-running workflows (Kafka, Temporal)
• Develop automated tests, participate in code reviews, and follow CI/CD practices
• Collaborate closely with Business Analysts to refine requirements and acceptance criteria
• Work with Frontend Engineers to define and maintain API contracts

Senior Back-End Engineer, Node.js

• Full development lifecycle
• Implement features based on provided requirements
• Contribute to technical initiative review
• Design, develop, and test new features for the platform, ensuring optimal performance and security
• Optimize the platform for speed and performance
• Work closely with the product team to ensure that user experience and design requirements are met
• Provide code reviews, offer suggestions to improve architecture and implementation, and assist in refactoring the existing codebase
• Troubleshoot software and product databases to ensure functionality
• Write object-oriented, clean, and maintainable code
• Implement common APIs based on architecture guidelines and frameworks
• Integration of data storage solutions.

Backend PHP Developer

• Design and develop backend features in C#/.NET
• Work on third-party system integrations
• Contribute to billing-related logic and services
• Collaborate closely with the VP of Tech and engineering team
• Ensure high code quality and reliability

Senior Back-end Engineer, C#

• Design and implement core Back-End services for real-time bidding, optimization, and ad delivery workflows
• Build custom bidding agents for real-time bid decisioning
• Develop high-load, low-latency components supporting real-time auction and delivery mechanics
• Implement proprietary pacing, bid-shading, and optimization logic to improve campaign efficiency
• Design and integrate forecasting capabilities for impressions, reach, outcomes estimation, and campaign planning
• Work with OpenRTB, JSON, protobuf, and other ad-tech protocols and data formats
• Collaborate with product, engineering, data, and ad operations stakeholders to deliver scalable performance advertising capabilities

Lead Go Developer, AdTech

• Develop new features and enhance existing functionality in a Linux-based system environment
• Design and implement system-level software and tools in C++ on Linux platforms
• Work with daemons, inter-process communication (IPC), and system services
• Support and improve hardware–software interaction at the system level
• Troubleshoot and debug issues related to memory, performance, and resource usage
• Collaborate closely with QA, DevOps, and hardware teams
• Maintain technical documentation and contribute to system design discussions.

Senior C++ Engineer, Linux

• Develop, maintain and evolve the database platform and adapt it for cloud technologies
• Ensure high scalability and maintainability of the components
• Contribute to and review designs and code from other team members
• Perform testing and provide tooling to maintain up-to-date systems
• Collaborate across teams to remediate database issues
• Support migration from VMs to Kubernetes

Senior Python Engineer – Kubernetes

• Design, develop, and maintain scalable backend services using Python.
• Build and enhance RESTful APIs using Django REST Framework and FastAPI.
• Integrate and optimize AI services, including Large Language Models (LLMs) and third-party model APIs.
• Develop and maintain Retrieval-Augmented Generation (RAG) systems, including vector databases, embedding pipelines, and retrieval mechanisms.
• Implement AI orchestration workflows using LangChain and related frameworks.
• Integrate multiple external APIs and data providers into backend systems.
• Design reliable, maintainable, and high-performance system architectures.
• Participate in technical design discussions, code reviews, and architectural decisions.
• Ensure software quality through automated testing, CI/CD pipelines, and monitoring practices.
• Troubleshoot and resolve production issues while continuously improving system reliability and performance.

Python Developer, AI focus

• Design, develop, and maintain Full-Stack features across the platform
• Build scalable backend services using Python
• Develop modern frontend applications with React and Next.js
• Collaborate closely with the Head of AI and other senior engineers
• Participate in architecture discussions and technical decision-making
• Take ownership of features from design through production
• Work in a fast-paced environment where requirements evolve alongside the product

Senior Python Full-Stack Engineer

• System Implementation: Support the re-architecture of legacy Perl batch jobs into modern, maintainable Python services.
• Operational Reliability: Assist in implementing workflow orchestration (Prefect/Airflow) to ensure safe job re-runs and system stability.
• Observability: Help instrument our services with logging and alerting (Grafana/CloudWatch) so we can monitor systems without direct production access.
• Data Transformation: Work on data ingestion pipelines, moving raw data to S3 and transforming it into relational database records.
• Collaboration: Participate in agile sprints and maintain clear English communication with the team and stakeholders.

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