over99

• Review withdrawals requiring manual risk assessment. • Monitor suspicious accounts, linked accounts, payment abuse, bonus abuse, gameplay anomalies, and provider alerts. • Investigate payment-related risks, including unusual deposit and withdrawal activity, duplicate payment methods, ownership concerns, and suspicious transaction patterns across both fiat and crypto. • Support KYC investigations, reviewing failed or pending verifications, document inconsistencies, payment ownership, and third-party payment concerns. • Conduct crypto-related investigations, including wallet reviews, blockchain analysis, repeated wallet usage, funding sources, and unusual transaction behaviour. • Analyse player behaviour across accounts, wallets, devices, IP addresses, payment methods, and gameplay to identify fraud patterns and emerging risks. • Use internal administration tools, payment systems, fraud platforms, KYC providers, blockchain explorers, and reporting dashboards to investigate cases. • Record investigation outcomes with clear documentation, evidence, and decision-making rationale. • Escalate complex or high-risk cases where appropriate. • Work collaboratively with Payments, Compliance, Product, VIP, and Customer Support teams. • Support a 24/7 Risk Operations function through a rotating shift pattern, including weekends.

• 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.

• 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.

• 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

• 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.

• 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

• 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.

• 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.

• 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.

• 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.