• Monitor daily fiat and crypto asset balances across bank accounts, custodial wallets, hot wallets, and cold wallets. • Support liquidity planning to ensure uninterrupted trading, withdrawals, and settlements. • Manage inter-wallet and inter-account fund movements while maintaining segregation of customer and company funds. • Oversee hot/cold wallet operations, including address management, whitelisting, and approvals. • Coordinate blockchain transactions, fee optimization, and transaction confirmations. • Reconcile on-chain transactions with internal ledger and exchange systems. • Monitor deposits, withdrawals, chargebacks, and settlement cycles. • Support bank account onboarding, KYC, and ongoing compliance documentation. • Support implementation of treasury controls related to private key management, multi-sig approvals, and access rights. • Monitor counterparty risk related to custodians, liquidity providers, and stablecoin issuers. • Prepare daily treasury dashboards covering fiat balances, crypto holdings, wallet positions, and liquidity ratios. • Perform daily reconciliations between blockchain data, exchange records, and accounting systems. • Ensure treasury operations comply with applicable multi-jurisdictional regulations. • Support internal and external audits related to digital asset custody and proof-of-reserves. • Identify process gaps and recommend controls for scaling treasury operations. • Coordinate closely with Compliance, Risk, Technology, and Operations teams. • Provide guidance to junior treasury or operations staff. • Act as backup for Treasury Manager during absence.

• Lead Xsolla ZK business development and ecosystem partnerships in the EMEA region • Identify and engage with web3 and traditional game studios, and blockchain infrastructure partners to establish and close partnerships and deals • Design and negotiate deal structures that include partnership and regional community incentives • Serve as the primary point of contact for projects onboarding to Xsolla ZK in the EMEA region • Contribute to the evolution of go-to-market strategy for the ZK ecosystem, including brand positioning and narrative, token utility, and ecosystem value loops • Represent Xsolla at Web3 and gaming conferences, hackathons, and investor/demo events

• Research emerging Web3 × AI directions, Produce structured research notes, technical summaries, or internal presentations including: - AI-powered wallets, trading, and DeFi workflows - AI + on-chain data analytics and intelligence - Intent-based and AI-driven user interaction • Participate in brainstorming sessions, contribute creative ideas, and explore novel approaches to AI-driven Web3 products. • Design, implement, and test experimental prototypes (PoCs) that combine AI with Web3 protocols and products. • Collaborate with engineering, product, and design teams to refine and scale PoCs into production-ready solutions.

• Lead brand identity systems including logos, color, typography, and visual applications • Art direct and create imagery for social, editorial, and marketing channels • Own concept development and visual direction for Serotonin and client projects from ideation through execution • Translate strategic and marketing objectives into compelling visual narratives • Commission and oversee external creative partners (illustration, photography, 3D, motion) • Guide design execution within client and partner brand systems • Shape and evolve Serotonin’s visual language across platforms and touch points