over99

Data Engineer

• Lead the design and evolution of our core data architecture across transactional, analytical, and long-term storage systems.
• Own and improve PostgreSQL data design, schema structure, indexing strategy, query performance, relationships, constraints, and data integrity.
• Design, review, and maintain ERDs and data models that clearly represent business logic, system behavior, and domain relationships.
• Work closely with backend engineers to ensure application data models are scalable, consistent, and suitable for both operational and analytical use cases.
• Build and improve data pipelines from production systems into analytics databases and reporting layers.
• Design reliable approaches for data ingestion, replication, transformation, validation, rollups, aggregations, and historical storage.
• Help define the right architecture for hot, warm, and cold data storage.
• Support the design of analytics-friendly datasets for reporting, dashboards, product analytics, finance, compliance, and operational monitoring.
• Help evolve our analytics database strategy, including how we use analytical stores, materialised views, denormalised tables, and aggregation layers.
• Establish data modeling best practices across the engineering team.
• Identify and fix data quality issues, including inconsistent schemas, duplicated logic, missing relationships, poor naming, and unreliable reporting sources.
• Collaborate with backend, product, DevOps, and leadership teams to turn business requirements into clean, scalable data structures.
• Define best practices for migrations, data retention, archival, backfills, and safe deletion of production data.
• Mentor engineers on database design, ERDs, data modeling, and data pipeline thinking.

Data Platform Lead

Engineer

• Integrate fiat payment methods (cards, bank transfers, e-wallets, local payment rails) through payment service providers, gateways, and aggregators
• Build and operate core money-handling flows: deposits, withdrawals, refunds, payouts, chargebacks, and settlement
• Design and develop ledger and balance-tracking systems that keep money movement accurate and auditable
• Guarantee transactional integrity across distributed systems — idempotency, consistency, exactly-once processing, and safe retries
• Handle PSP webhooks, callbacks, and asynchronous status updates, including reconciliation against provider records
• Build and optimize scalable, low-latency Node.js services supporting high-throughput transactional workloads
• Ensure the performance, reliability, and security of payment APIs
• Collaborate cross-functionally with product, risk/fraud, finance, and other engineers to ship end-to-end payment features
• Contribute to best practices across code quality, testing, CI/CD, and deployment, and share payments domain knowledge with the team

Payments Engineer

Frontend Engineer

• Build and improve high-quality frontend features across the Over99 webapp and games surfaces.
• Work with React, Vue 3, TypeScript, Vite, and modern frontend tooling to deliver fast, reliable user experiences.
• Own frontend implementation for interactive product flows across wallets, balances, gameplay, account features, promotions, and real-time updates.
• Collaborate with engineers on frontend architecture, reusable components, state management, and performance optimization.
• Build and refine real-time client-server features using technologies like Socket.IO, WebSockets, and event-driven updates.
• Contribute to game-facing frontend experiences involving animations, sound, timing, physics, and responsive interaction patterns.
• Partner closely with product managers, designers, backend engineers, and QA to deliver polished end-to-end features.
• Use Cursor IDE, LLMs, and AI-assisted coding workflows heavily as part of day-to-day engineering, including MCP-powered integrations and custom tooling on top of Cursor.
• Use observability practices and tools like Datadog to understand frontend health, debug production issues, and improve user impact.
• Write maintainable, tested code and contribute to code reviews, CI/CD workflows, and team engineering standards.
• Mentor less experienced engineers through thoughtful reviews, pairing, technical guidance, and strong examples of ownership.

Mid/Senior Frontend Engineer

• Build and improve high-quality frontend features across the Over99 webapp and games surfaces.
• Work with React, Vue 3, TypeScript, Vite, and modern frontend tooling to deliver fast, reliable user experiences.
• Help build interactive product flows for wallets, balances, gameplay, account features, promotions, and real-time updates.
• Collaborate with senior engineers on frontend architecture, reusable components, state management, and performance optimization.
• Work with real-time client-server features using technologies like Socket.IO , WebSockets, and event-driven updates.
• Contribute to game-facing frontend experiences involving animations, sound, timing, physics, and responsive interaction patterns.
• Partner closely with product managers, designers, backend engineers, and QA to deliver polished end-to-end features.
• Use Cursor IDE, LLMs, and AI-assisted coding workflows heavily as part of day-to-day engineering, including MCP-powered integrations and custom tooling on top of Cursor.
• Learn and contribute to observability practices using tools like Datadog to understand frontend health and user impact.
• Write maintainable, tested code and participate in code reviews, CI/CD workflows, and team engineering standards.
• Grow quickly through mentorship, hands-on ownership, and exposure to production-scale crypto gaming systems.

Product Manager

• Build and maintain a clear, actionable roadmap aligned with company goals
• Translate user needs and business requirements into well-defined product features
• Cover the entire user journey – making sure even edge cases are addressed
• Monitor performance and iterate based on data-driven insights
• Ensure a smooth product development process and prioritise effectively
• Run user surveys to deeply understand player needs
• Communicate roadmap, decisions, and priorities effectively across stakeholders

Customer Support

• Provide high-quality customer support via live chat and email, resolving player inquiries related to accounts, payments, promotions, and platform-related issues.
• Have experience dealing with escalated tickets, investigating, and debugging prior to escalations.
• Manage and resolve player complaints professionally, escalating complex or unresolved cases to senior team members when required.
• Assist players with account creation, password resets, deposits and withdrawals, bonuses, and other account-related queries.
• Maintain up-to-date knowledge of Winna’s products, promotions, terms, and policies to ensure accurate and consistent communication.
• Follow company security protocols and ensure compliance with gaming regulations and responsible gambling standards.
• Troubleshoot and resolve common technical issues, including platform errors, payment processing issues, and site navigation challenges.
• Capture and communicate player feedback to relevant internal teams to support continuous improvement.
• Maintain accurate and detailed records of customer interactions for reporting and compliance purposes.
• Collaborate closely with internal teams to resolve issues efficiently and improve the overall player experience.

Senior Customer Support and Fraud Specialist

• Provide high-quality customer support via live chat and email, resolving player inquiries related to accounts, payments, promotions, and platform-related issues.
• Have experience dealing with escalated tickets, investigating, and debugging prior to escalations.
• Experience with dealing with game providers using their service desk and dealing with bet issues or bugs.
• Manage and resolve player complaints professionally, escalating complex or unresolved cases to senior team members when required.
• Assist players with account creation, password resets, deposits and withdrawals, bonuses, and other account-related queries.
• Maintain up-to-date knowledge of Winna’s products, promotions, terms, and policies to ensure accurate and consistent communication.
• Follow company security protocols and ensure compliance with gaming regulations and responsible gambling standards.
• Troubleshoot and resolve common technical issues, including platform errors, payment processing issues, and site navigation challenges.
• Capture and communicate player feedback to relevant internal teams to support continuous improvement.
• Maintain accurate and detailed records of customer interactions for reporting and compliance purposes.
• Collaborate closely with internal teams to resolve issues efficiently and improve the overall player experience.

Senior Customer Support Specialist

Risk

• Design and execute over99’s risk strategy across payments, fraud, and player operations—combining analytical decision-making with strong operational execution.
• Own the overall risk and fraud framework across account security, payments, bonus abuse, and player activity.
• Design, maintain, and continuously optimise rule sets covering velocity checks, device/IP analysis, geo and payment method rules, and wagering or bonus triggers.
• Monitor and investigate suspicious activity daily, including multi-accounting, collusion, arbitrage, bonus abuse rings, and payment fraud patterns.
• Lead full-cycle case management—detection, evidence gathering, assessment, decisioning, and documentation.
• Collaborate with the Payments and Finance teams to manage chargebacks and disputes, conduct root-cause analysis, and implement effective prevention strategies.
• Partner with Customer Support to create clear playbooks for flags, holds, verification flows, and communication templates.
• Coordinate with Product, VIP, and Marketing teams to align risk, conversion, and performance objectives across promotions and payment journeys.
• Liaise with vendors (KYC, fraud scoring, payment processors, wallet services) to manage integrations, evaluate tools, and optimize configurations.
• Build structured reporting across fraud losses, abuse rates, chargebacks, false positives, and conversion KPIs.
• Establish a strong operational rhythm with SLAs, escalation paths, incident tracking, and continuous improvement cycles.
• Continuously enhance defences against abuse while maintaining frictionless player onboarding and payments efficiency.

Risk and Fraud Manager

Manager

• Manage day-to-day sportsbook operations, ensuring optimal uptime, accuracy, and user engagement.
• Monitor performance across key metrics including turnover, margin, and player activity, delivering regular and ad-hoc reporting.
• Ensure the sportsbook offer remains competitive, localized, and aligned with global sporting events and trends.
• Plan and execute sportsbook promotions such as free bets, odds boosts, and event-based campaigns in coordination with trading and marketing teams.
• Support CRM and lifecycle marketing initiatives with targeted and segmented player offers.
• Track KPIs, identify performance trends, and recommend data-driven improvements to enhance player engagement and profitability.
• Partner closely with internal teams including align on promotions, product development, and operational improvements.
• Support ownership with strategic initiatives and sportsbook enhancements to drive growth and performance.

Sportsbook Manager

QA Engineer

• Define and recommend strategies to improve software quality throughout all phases of development
• Design, plan, and execute various types of testing—functional, performance, mobile—to detect bugs and ensure quality standards are met
• Build, maintain, and implement automated test suites, including functional, regression, and visual testing
• Conduct manual or exploratory tests when necessary to ensure full test coverage
• Record defects, collaborate with developers to resolve them, and promote continuous quality improvement
• Work with product to uphold site standards and suggest improvements
• Collaborate with product to verify the maths behind different features

Quality Engineer

Customer Success Manager

• Plan and execute multi-channel CRM campaigns (email, SMS, push, inbox, on-site, promo pages) covering onboarding, retention, reactivation, upsell, and cross-sell journeys for both Sports Betting and Casino verticals.
• Deliver vertical-specific campaigns including pre-match and in-play promos, event-driven offers, casino reloads, free spins, and personalized recommendations.
• Coordinate with the VIP, Product, CS, and Compliance teams to ensure timely and accurate campaign delivery.
• Handle bonus setup, promotion configuration, and end-to-end QA across all player segments—from entry-level to VIP.
• Build and maintain advanced player segmentation based on lifecycle, behavior, and preferences, applying personalized content logic and dynamic fields.
• Collaborate with the CMO to refine segmentation strategies and align CRM initiatives with broader product marketing goals.
• Manage automated journeys for onboarding, churn prevention, early-lifecycle nudges, reactivation, and VIP retention.
• Partner with BI and Product teams to identify performance trends and optimize campaign flows through A/B testing and data insights.
• Monitor CRM KPIs (open rates, CTR, CVR, retention, ARPU, activity levels, and revenue impact) and continuously optimize based on results.
• Ensure all communications comply with iGaming, responsible gaming, and crypto-related regulations while maintaining accuracy and consistency across all channels.