Senior Wallet Developer

About AlphaPoint: AlphaPoint is a financial technology company powering digital asset exchanges and brokerages worldwide. Through its secure, scalable, and customizable white label digital asset trading platform, AlphaPoint has enabled over 150 customers in 35 countries to launch and operate digital asset markets, as well as digitize assets. AlphaPoint and its award winning blockchain technology have helped startups and institutions discover and execute their blockchain strategies since 2013. Job Description We are seeking a Senior Wallet Developer to design, build, and maintain secure, scalable wallet infrastructure for digital assets and financial systems. This role will work across backend services, wallet technology, external integrations, real-time systems, infrastructure, and emerging technologies. Responsible for software development, systems integration, system design, and implementation of secure wallet infrastructure. Develop backend services, APIs, and wallet systems using technologies such as C#/.NET, Node.js, and TypeScript. Design and implement secure wallet infrastructure, transaction workflows, and integrations with digital asset networks, financial systems, and external infrastructure partners such as Fireblocks and other custody and wallet service providers, with familiarity in Multi-Party Computation (MPC) technologies. Develop and integrate REST APIs, gRPC, WebSockets, streaming data, and event-driven services. Build and maintain developer tools, internal services, and automation that improve engineering efficiency and system reliability. Work with modern infrastructure and deployment technologies such as Docker, Kubernetes, CI/CD platforms, AWS, and cloud environments. Apply a strong security-first approach to application development, wallet infrastructure, key management, access controls, cryptographic operations, and sensitive financial data. Recommend system solutions by evaluating the security, scalability, performance, reliability, and maintainability of different technologies and architectures. Work with external technology and infrastructure partners to integrate wallet, custody, payment, blockchain, and financial services. Support systems involving transaction processing, digital asset transfers, monitoring, confirmations, reconciliation, and real-time financial data. Research and evaluate emerging technologies, software tools, and blockchain infrastructure to continuously improve wallet systems and engineering practices. Basic Requirements Strong professional experience developing production-grade software. Advanced experience with C#/.NET, TypeScript/JavaScript, Node.js, or similar technologies. Experience building and integrating REST APIs, gRPC, WebSockets, streaming data, and event-driven systems. Experience with modern infrastructure and deployment technologies such as Docker, Kubernetes, CI/CD platforms, AWS, GCP, and cloud environments. Familiarity with Linux environments, command-line tools, system administration, and troubleshooting. Experience working with cloud and/or bare-metal infrastructure in production environments. Strong understanding of secure coding practices, software architecture, authentication, authorization, and secrets management. Experience working with financial services, payment systems, trading systems, digital assets, or other security-sensitive applications. Experience integrating with external technology and infrastructure partners, such as custody, wallet, payment, or blockchain service providers. Working knowledge of KYC, KYT, AML, Travel Rule, sanctions screening, transaction monitoring, and other regulatory requirements relevant to digital asset and financial services infrastructure. Ability to troubleshoot and resolve complex issues across distributed systems and production environments. Ability to work effectively in a fast-paced environment with rapidly changing technologies and requirements. Strong ownership, problem-solving, communication, and collaboration skills. Bachelor's degree in Computer Science, Information Technology, Finance, Engineering, or a related field, or equivalent professional experience. Preferred Skills and Knowledge Experience with Multi-Party Computation (MPC) and MPC-based wallet architectures. Experience with cryptographic key management, KMS, secure signing, custody infrastructure, transaction orchestration, and key lifecycle management. Experience with AWS services, particularly infrastructure, networking, security, and identity services. Experience operating bare-metal infrastructure and security-sensitive production environments. Familiarity with wallet and custody platforms such as Fireblocks and similar external service providers. Experience integrating with blockchain networks, exchanges, payment providers, custodians, and other digital asset infrastructure. Strong understanding of blockchain transaction flows, confirmations, balances, deposits, withdrawals, and reconciliation. Experience designing highly available, fault-tolerant, and security-sensitive systems. Strong knowledge of application, API, infrastructure, and cloud security. Experience building internal developer tooling, automation, testing frameworks, and operational tooling. Experience working with high-volume real-time and streaming financial data. Familiarity with Solidity and smart-contract technologies. Familiarity with emerging blockchain, cryptographic, distributed-system, and financial technology. This is a 100% Remote opportunity.