Role Description We are looking for a highly skilled Senior Blockchain Engineer to join our engineering team and help design, build, and scale secure blockchain-based products. The ideal candidate has strong experience in smart contract development, blockchain protocols, decentralized applications, and backend systems. You will work closely with product, engineering, and security teams to develop robust Web3 solutions, contribute to technical architecture, and ensure our blockchain infrastructure is secure, scalable, and reliable. Key Responsibilities - Design, develop, test, and deploy smart contracts and blockchain-based applications. - Build and maintain decentralized applications, blockchain integrations, and backend services. - Work with blockchain networks such as Ethereum, Polygon, Solana, BNB Chain, Avalanche, or similar ecosystems. - Review and optimize smart contracts for security, gas efficiency, and performance. - Collaborate with frontend, backend, product, and security teams to deliver high-quality Web3 products. - Participate in architecture decisions and contribute to technical strategy. - Integrate wallets, token standards, DeFi protocols, NFTs, DAOs, or other blockchain infrastructure as needed. - Write clean, maintainable, well-documented code. - Conduct code reviews and mentor junior engineers. - Stay current with emerging blockchain technologies, security standards, and industry best practices. Qualifications - 5+ years of professional software engineering experience. - 3+ years of hands-on blockchain or Web3 development experience. - Strong experience with Solidity, Rust, Go, or other blockchain-related programming languages. - Experience developing and deploying smart contracts on mainnet or testnet environments. - Strong understanding of blockchain concepts, including consensus mechanisms, wallets, private keys, transactions, gas fees, bridges, and token standards. - Experience with frameworks and tools such as Hardhat, Foundry, Truffle, Web3.js, Ethers.js, Anchor, or similar. - Solid backend development experience using Node.js, TypeScript, Go, Python, or similar technologies. - Strong understanding of security best practices for smart contracts and decentralized systems. - Experience with Git, CI/CD workflows, APIs, databases, and cloud infrastructure. - Excellent problem-solving, communication, and teamwork skills. Nice to Have - Experience with DeFi, staking, tokenomics, NFT platforms, Layer 2 solutions, or cross-chain protocols. - Familiarity with smart contract audits and formal verification. - Open-source contributions in the blockchain or Web3 ecosystem. - Experience with indexing tools such as The Graph. - Knowledge of zero-knowledge proofs, account abstraction, MEV, or rollup technologies. - Previous experience working in a startup or fast-paced product environment. Benefits - Competitive salary and performance-based incentives. - Flexible working environment. - Opportunity to work on innovative blockchain and Web3 products. - Collaborative and growth-focused team culture. - Professional development and learning opportunities. - The chance to make a meaningful impact in a rapidly growing industry. How to Apply Please submit your resume, GitHub profile, portfolio, or examples of previous blockchain projects. We would love to hear about smart contracts, protocols, or Web3 applications you have built or contributed to. Join us and help build the future of decentralized technology.

Role Description As a Site Reliability Engineer (SRE) at Altera, you will be responsible for ensuring the reliability, scalability, and performance of our hosted healthcare platforms. This role blends software and systems engineering to enhance service availability, automate operations, and improve the customer experience. You will act as a technical leader in monitoring, troubleshooting, incident response, and continuous improvement across our cloud and hybrid environments. Key Responsibilities - Maintain and improve the reliability, availability, and performance of our production environments. - Lead the investigation and resolution of complex application, database, and infrastructure issues. - Participate in incident management, conduct root cause analysis (RCA), and contribute to post-incident reviews to prevent future occurrences. - Define and measure Service Level Indicators (SLIs) and Objectives (SLOs) to meet our service commitments. - Develop proactive monitoring and alerting strategies to identify and resolve issues before they impact customers. - Automate operational tasks using scripting and Infrastructure-as-Code (IaC) to improve efficiency. - Partner with engineering and cloud teams to refine deployment, monitoring, and support processes. - Provide technical leadership during major incidents and act as a key escalation point for critical issues. Qualifications - 7+ years of experience supporting enterprise applications, infrastructure, or cloud environments. - Strong experience with APM tools such as LogicMonitor, AppDynamics, Azure Monitor, SentryOne, Dynatrace, Datadog, or New Relic. - Deep knowledge of Windows Server administration, IIS, .NET applications, Windows Clustering, MSMQ, Event Logs, and PerfMon. - Strong SQL Server experience, including performance tuning, query optimization, blocking analysis, and Always On Availability Groups. - Experience with Azure cloud environments and a solid understanding of networking fundamentals (DNS, TCP/IP, load balancing, firewalls). - Familiarity with ServiceNow (or other ITSM platforms) and ITIL principles. - Scripting with PowerShell, Python, or similar languages. - Infrastructure as Code (Terraform, ARM Templates, Bicep). - CI/CD pipelines and deployment automation (Azure DevOps, GitHub Actions). - Experience with Kubernetes and containerized workloads. - Experience implementing SLOs, SLIs, and Error Budgets. - Experience in a healthcare technology or patient care environment. - Bachelor's Degree in Computer Science, Information Technology, or Engineering is preferred; equivalent professional experience will be considered. Working Arrangements - This is a remote position open to candidates within the United States. - You will participate in an on-call rotation to support our 24x7 healthcare environment. - Occasional after-hours work is required for activations, upgrades, and major incidents. Travel - Travel is not a requirement for this role. Benefits - Opportunity to profoundly impact the lives of patients by empowering healthcare providers to deliver superior care. - Join a passionate and gifted team committed to innovation and excellence. - Competitive compensation and benefits package. - Opportunity to work in a fast-paced and dynamic environment.

• Design, prototype, construct, and maintain real-time telemetry and telemetry processing platforms • Collaborate with multiple stakeholders throughout the company to execute a smooth process from idea to product • Maintain security, including best practices for secure coding standards, on all development projects and processes • Keep current with new technology • Write complete and effective documentation for your projects • Ensure that the team only produces the highest quality of code by acting as a peer reviewer and providing in-depth review along with detailed and thoughtful comments • Support sales and solutions engineering as a subject matter expert on team supported products and systems.

Role Description DomainTools is looking for a Senior Distributed Systems Engineer (Sr. DSE) to join our Real-Time Engineering team. This role is a key contributor to maintaining, extending, building, and evolving products based on high volume, real-time telemetry data from a worldwide network of data contributors and collectors. A Sr. DSE is an experienced technologist adept at systems design, prototyping / proof of concept development, and developing and deploying production quality systems and code. As a Sr. DSE, you will: - Maintain and extend core systems software and assist operations in evolving the infrastructure for delivering high volume real-time telemetry. - Develop requirements, prototypes, and ultimately production implementations of new products based on the data. - Maintain, extend, and scale our industry-leading passive DNS database and its in-house storage engine. - Work with product management to design new products based on this data, and prototype, develop, and ultimately deploy them. - Solve interesting problems and navigate tradeoffs as a core part of this engineering role, in addition to writing and configuring code. Qualifications - 5+ years of experience working and developing software for Linux or similar systems. - 5+ years of experience developing software and/or designing systems in a team environment. - Working familiarity with modern CI/CD systems and practices and cloud deployment. - Ability to write and review expert-level systems and application code in C, Rust, or Go. - Familiarity with multiple systems design approaches (e.g., Cloud-native, monolithic, and microservices) and their respective tradeoffs. - Familiarity with multiple programming paradigms (e.g., functional, object oriented, concurrent vs. parallel vs. event-driven) and their respective tradeoffs. - Self-starter with a high level of initiative, commitment and energy. - Excellent organizational and time management skills, ability to prioritize multiple tasks and organize work to meet deadlines. - Ability to understand the needs of the business and evaluate solutions to recommend to leadership. Preferred Qualifications - Working familiarity with Python, and Python integration with C or Rust. - Experience working remotely with distributed teams across multiple time zones. - Familiarity with software packaging and release engineering tools and infrastructure. - Understanding of core Internet technologies such as TCP/IP, DNS, or BGP. Benefits - Fully paid medical, dental and vision insurance premiums. - 401k retirement plan with company matching. - Basic life insurance. - Flexible PTO. - Additional well-being benefits. Company Description DomainTools is the global leader for Internet intelligence and the first place security practitioners go when they need to know. The world’s most advanced security teams use our solutions to identify external risks, investigate threats, and proactively protect their organizations in a constantly evolving threat landscape. DomainTools constantly monitors the Internet and brings together the most comprehensive and trusted domain, website and DNS data to provide immediate context and machine-learning driven risk analytics delivered in near real-time. Although we are a remote friendly organization and provide great benefits and outstanding perks. DomainTools embraces diversity, equity and inclusion to its fullest as an equal opportunity employer. We build our teams so creativity and innovation can flourish. We believe inclusivity and equity fosters innovation and growth; and we harness this mindset to drive a culture that serves our employees and our customers. We encourage people of all backgrounds, ages, perspectives, and skill sets to apply; and do not discriminate based on age, religion, color, national origin, gender, sexual orientation, gender identity, marital status, veteran status, disability or any other characteristic protected by law.