Senior Software Engineer - Custody Services

About Teamix
Teamix is a platform connecting top-tier talent in blockchain and AI with innovative startups and companies building decentralized products. We’re looking for a Senior Blockchain Developer to join our network of experts, where you’ll contribute to the development of blockchain systems that bridge the gap between real-world assets and decentralized finance (DeFi). This is an exciting opportunity to work with mission-driven startups, bringing advanced blockchain solutions to scale.
Only apply here: https://www.myteamix.com/#/talent-ai-platform
Your Responsibilities
As a Senior Blockchain Developer, you will:
Design, develop, and implement secure blockchain systems to support innovative decentralized solutions.
Contribute to the development of private and public blockchain networks, including smart contracts, tokenization, and ledger management.
Collaborate with engineering teams across multiple projects to iterate and improve blockchain functionality.
Build and maintain backend services that scale efficiently to support decentralized applications (DApps) and blockchain-based platforms.
Participate in code reviews, ensuring the highest standards of blockchain security, accuracy, and performance.
Stay up to date with blockchain trends and technologies to enhance the architecture and features of projects.
Work closely with startups to ensure blockchain implementations meet business objectives and deliver verifiable trust in decentralized systems.
 
Key Requirements
3+ years of dedicated blockchain development experience, including expertise with Ethereum, Solana, and smart contract frameworks.
5+ years of experience building scalable backend services in languages such as Golang, Rust, Java, TypeScript, or Python.
Proven track record of delivering secure, high-performance blockchain solutions.
Strong understanding of blockchain consensus mechanisms, tokenization, and decentralized architecture.
 
Preferred Qualifications
Experience with private blockchain networks like Hyperledger, CordaR3, or DAML.
Knowledge of interoperability solutions between different blockchain networks.
Familiarity with zero-knowledge proofs and their applications.
Experience building decentralized applications (DApps).
Previous experience with Blockchain-as-a-Service platforms.
Why Join Teamix?
Teamix offers flexibility and the opportunity to work on impactful projects within a global network of Web3 and AI experts. You’ll collaborate with startups that are building cutting-edge blockchain solutions and help shape the future of decentralized finance, smart contracts, and more.
Apply here: https://www.myteamix.com/#/talent-ai-platform

Wallet in Telegram is your gateway to the world of digital currencies, specially tailored for individuals in emerging markets. We understand the complexities and intimidation often associated with existing crypto solutions, which is why we've designed the Wallet to be the ultimate user-friendly platform for managing finances. No need to open a traditional bank account or wrestle with convoluted crypto exchanges and wallets.
Leveraging the power of advanced blockchain technology, Wallet delivers a seamless onboarding experience into the crypto ecosystem. It enables users to effortlessly store, send, and receive digital currencies, all via the familiar interface of Telegram. Managing your finances becomes as simple as sending a message.
At Wallet, we're committed to using technology to disrupt traditional banking systems, providing our customers with more flexible and inclusive financial services. Whether you're a crypto novice or seeking to simplify your digital finance experience, Wallet is crafted with your needs in mind.
We are seeking a highly motivated and detail-oriented AML P2P Analyst to join our compliance team within the rapidly evolving cryptocurrency sector. The successful candidate will be responsible for monitoring, analyzing, and investigating peer-to-peer (P2P) transactions to detect and prevent money laundering and other illicit activities.
This role is critical in ensuring our compliance with regulatory requirements and maintaining the integrity of our platform.
Responsibilities:
Monitor and analyze P2P cryptocurrency transactions to identify suspicious activities and assess potential risks related to money laundering and fraud.
Conduct thorough investigations into flagged transactions, utilizing blockchain analysis tools and transaction data to gather relevant information.
Collaborate with cross-functional teams, including compliance, legal, product, and operations, to develop and implement robust AML policies and procedures specific to the cryptocurrency environment.
Prepare detailed reports on findings, trends, and risk assessments for management and regulatory authorities.
Stay informed about evolving AML regulations, industry best practices, and emerging risks associated with cryptocurrency and P2P transactions.
Assist in developing training programs to enhance AML awareness and compliance among staff and stakeholders.
Support the implementation of technology solutions, including transaction monitoring systems and risk assessment tools, to optimize compliance processes.
Qualifications:
Minimum of 2 years experience in AML, compliance, or financial analysis, preferably within the cryptocurrency or fintech sectors.
Strong understanding of AML regulations, especially as they pertain to cryptocurrency, and familiarity with relevant regulatory frameworks.
Experience with blockchain analysis tools and transaction monitoring systems.
Excellent analytical, problem-solving, and decision-making skills, with a keen attention to detail.
Strong written and verbal communication skills, capable of conveying complex information clearly.
Ability to manage multiple tasks and prioritize effectively in a fast-paced environment.
Proficiency in English (at least level B2) is required.
We seek candidates who can work on 5/2 schedule with flexible days off.
Why it is a fantastic opportunity:
Our business is growing at an exponential scale.
Work in a well-funded startup environment with unique growth opportunities and a chance to join a rapidly growing company with a unique product.
Be based remotely.
Compensation for medical expenses.
Provision of necessary equipment.
Annual vacation of 20 working days.
14 days of paid sick leave to support your health and recovery when needed.
Access to internal English courses for continuous learning and improvement in language skills.
Wallet is an equal opportunity employer.

We are looking for a talented and driven backend engineer with system design and architecture experience. This position entails complete remote work, encompassing the end-to-end process of designing, building, and scaling critical infrastructure services for a large user base of hundreds of thousands.
What you will do
Write well-structured, and efficient code contributing to the development of new services and features.
Identify bottlenecks and optimize existing infrastructure.
Shape the direction of the platform and the product, making architectural decisions and driving innovation and improvement.
Participate in the planning of technical tasks and code reviews.
Be an integral part of a dynamic team, willing to take the initiative and contribute to the continuous improvement and growth of the Zerion platform.
Work as part of an autonomous cross-functional team, and collaborate closely with frontend and mobile engineers on product development.
What we are looking for
5+ years of experience in designing & building distributed backend systems.
Solid knowledge of basic algorithms, data structures, and design patterns.
Familiarity with Blockchain systems, dApps, and smart contracts.
Willingness to work in a fast-paced startup environment.
Desire to take an active part in our product evolution.
You're likely to succeed if you have
Excellent knowledge of Golang.
Experience with containerized systems: Docker & Kubernetes.
Experience with SQL / NoSQL databases: Postgres, MongoDB, Cassandra.
Experience with monitoring tools: Sentry, Prometheus, and Grafana.
Experience with AWS (Amazon Web Services).
Experience with Python3.
Experience working in a startup environment, that encourages trust and autonomy.
You are likely a perfect candidate if
You are an active Web3 user.
You have worked with time-series data and specialized databases: ClickHouse, TimescaleDB, etc.
You have pet projects, blog articles and/or open-source contributions.
You have participated in the industry conferences.
Why You Should Join
Culture: Our high engagement and low turnover emphasize our commitment to a positive culture, with a remarkable retention rate of 92%.
People: Collaborate with some of the most driven and intelligent individuals in the crypto space.
Salary & Benefits: Receive a competitive salary, medical insurance, coworking membership, and additional benefits.
Unlimited Days Off and Flexible Work Schedule: Recharge and explore life outside the office with our flexible time-off policy and work schedule.
Remote Work Essentials: We provide all the necessary software and equipment to ensure you're fully equipped to work from home comfortably and efficiently.
Stock Options: Contribute to Zerion's success and watch your stock options become valuable.
Relocation: We support relocation for you and your family.
Travel: Join your colleagues on trips to industry festivals and events.
Distributed Team: Zerion is a fully remote team with members worldwide. Embrace asynchronous collaboration, find your own work rhythm, and enjoy a healthy work-life balance.
Company Overview
Highlights:
+350 Monthly Active Funded Wallets
+250k Monthly Active Zerion Wallets
255k Unique Zerion DNA Holders
Zerion helps to manage your DeFi and NFT portfolios, trade across 10+ networks and connect to any decentralized application with one wallet. Our mission is to empower more people around the world with efficient, permissionless and transparent financial services.
To ALL recruitment agencies and individual recruiters: Zerion only accepts resumes from its partners, with whom Zerion has contractual relations. Zerion is not responsible for any fees or charges associated with unsolicited resumes.

Wallet in Telegram is your gateway to the world of digital currencies, specially tailored for individuals in emerging markets. We understand the complexities and intimidation often associated with existing crypto solutions, which is why we've designed the Wallet to be the ultimate user-friendly platform for managing finances. No need to open a traditional bank account or wrestle with convoluted crypto exchanges and wallets.
Leveraging the power of advanced blockchain technology, Wallet delivers a seamless onboarding experience into the crypto ecosystem. It enables users to effortlessly store, send, and receive digital currencies, all via the familiar interface of Telegram. Managing your finances becomes as simple as sending a message.
At Wallet, we're committed to using technology to disrupt traditional banking systems, providing our customers with more flexible and inclusive financial services. Whether you're a crypto novice or seeking to simplify your digital finance experience, Wallet is crafted with your needs in mind.
We are seeking a Head of Product to lead the expansion of Wallet’s TON Space, focusing on increasing adoption, engagement, and user experience.
TON Space provides Wallet users a self-custodial TON blockchain address, offering complete control of their assets and the ability to interact with DeFi applications within Telegram and beyond. TON Space has experienced explosive growth, surpassing 50 million users in less than a year after its launch.
With this rapid growth of users, there are more opportunities than ever to increase engagement and form partnerships between TON Space and other DeFi projects, Telegram Mini-apps, and protocols.
Responsibilities:
Develop and execute business, marketing and product strategy of TON Space as one of the major wallets in TON ecosystem.
P&L management, ensuring financial targets are met while optimizing revenue streams and controlling costs.
Develop and execute promotions for TON Space with DeFi projects and Telegram Mini-Apps within the TON Ecosystem.
Coordinate with marketers, engineers, analysts, designers and other team members to expand the current product based on a roadmap you will develop, with an emphasis on increasing user engagement and ecosystem development.
Keep on top of Telegram mini-apps and TON Ecosystem trends to identify new opportunities and partnerships for TON Space.
Requirements:
Proven track record of successfully developing and launching consumer-facing crypto products in a fast-paced, agile environment.
Minimum of 5 years of experience in product development, preferably in the cryptocurrency or fintech industry.
Deep understanding of blockchain technologies, smart contracts, and self-custodial wallet solutions.
Proven track record of managing P&L for digital products or services, including setting and achieving financial targets.
Proven ability to build and maintain relationships with partners and external projects within the crypto and DeFi space.
Strong analytical mindset, with the ability to use data to drive decision-making.
Ability to operate in a global environment, with regard to compliance and regulatory requirements.
English proficiency at B2 level or higher.
Why it is a fantastic opportunity:
Our business is growing at an exponential scale.
Work in a well-funded startup environment with unique growth opportunities and a chance to join a rapidly growing company with a unique product.
Be based remotely.
Participation in the performance review and bonus programm.
Compensation for medical expenses.
Provision of necessary equipment.
Annual vacation of 20 working days plus 10 paid days off.
14 days of paid sick leave to support your health and recovery when needed.
Access to internal English courses for continuous learning and improvement in language skills

Wallet in Telegram is your gateway to the world of digital currencies, specially tailored for individuals in emerging markets. We understand the complexities and intimidation often associated with existing crypto solutions, which is why we've designed the Wallet to be the ultimate user-friendly platform for managing finances. No need to open a traditional bank account or wrestle with convoluted crypto exchanges and wallets.
Leveraging the power of advanced blockchain technology, Wallet delivers a seamless onboarding experience into the crypto ecosystem. It enables users to effortlessly store, send, and receive digital currencies, all via the familiar interface of Telegram. Managing your finances becomes as simple as sending a message.
At Wallet, we're committed to using technology to disrupt traditional banking systems, providing our customers with more flexible and inclusive financial services. Whether you're a crypto novice or seeking to simplify your digital finance experience, Wallet is crafted with your needs in mind.
We are looking for an experienced manager to head our regional branch. As the Head of office, you will be responsible for overseeing all branch operations, negotiating with authorities and ensuring regulatory compliance.
Responsibilities:
Operational Leadership:
Lead and manage the daily operations of the branch, ensuring seamless and efficient workflow across all functions.
Optimize the use of branch resources, including financial, technical, and human capital, to maximize performance and efficiency.
​​​​​​​Compliance & Risk Management:
Ensure the branch operates in full compliance with local and international regulatory requirements, particularly in relation to cryptocurrency laws.
Collaborate closely with legal and compliance teams to address and mitigate risks, including AML and KYC protocols.
Maintain up-to-date knowledge of regulatory changes and ensure the branch’s policies and procedures remain compliant.
Communication & Stakeholder Engagement:
Act as the primary liaison with regulatory authorities, handling inquiries and ensuring timely and accurate reporting.
Provide regular updates on branch performance, compliance status, and risk management to senior leadership.
Key Requirements:
Experience in a management role within the cryptocurrency, fintech, or financial services industries.
Strong knowledge of blockchain technology, digital assets, and the dynamics of cryptocurrency markets.
Exceptional communication and negotiation skills.
Excellent organizational, analytical, and problem-solving abilities, with a focus on operational efficiency.
Preferred Requirements:
Experience working in fintech as branch manager or similar position.
Familiarity with cryptocurrency technologies and regulatory frameworks.
Prior experience engaging with regulatory authorities, particularly in regions like Uzbekistan or similar jurisdictions.
We are looking for candidates who can work on a 5/2 schedule, with a hybrid format of 2-3 days working from the office.
Why it is a fantastic opportunity:
Our business is growing at an exponential scale.
Work in a well-funded startup environment with unique growth opportunities and a chance to join a rapidly growing company with a unique product.
Compensation for medical expenses.
Provision of necessary equipment.
Annual vacation of 20 calendar days.
14 days of paid sick leave to support your health and recovery when needed.
Access to internal English courses for continuous learning and improvement in language skills.