Building the foundation of the Verifiable Web. Hiring software engineers and managers at all levels, as well as product management leaders.Chainlink Labs is the leading provider of secure and reliable open-source blockchain oracle solutions, enabling smart contracts to connect to real-world data and systems, such as off-chain data feeds, web APIs, IoT devices, payment systems, and more. We are dedicated to the development and integration of Chainlink as the standard decentralized oracle framework used by smart contracts across any blockchain. Through a fusion of principled academic research and an industry focus on user needs, our mission is to enable the next generation of smart contracts and usher in a new age of economic fairness, transparency, and efficiency.

I'm heading the fleet optimization and provisioning aspects of DynamoDB -- the brain that powers the tens of thousands of nodes we have in our fleet and decides which resources to allocate to what customer, optimizing for durability, availability and cost. I'm hiring managers, developers, and data scientists are who interested in solving the following problems:- Distributed, large-scale, fault-tolerant resource optimization.- Distributed, scalable, fault-tolerant, goal-oriented and budget-constrained task execution.- Customer-facing Provisioning APIs, metering, on-demand/elastic modes for DynamoDB.- Service Intelligence investigations/pipelines: characterize customer load and the efficacy of proposed features.I also head DynamoDB's engineering system, and I'm looking for a manager to own our development infrastructure as the team grows and requires further automation for our release pipelines.We also have opportunities for engineers interested in low-level database and storage technology, and query parsing and optimization.

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Led the development of core Intelligent Systems Services as a part of Microsoft's investment in IoT. Features included device authentication, data ingestion, complex event processing (CEP), data archival, device dashboard and programmatic management APIs. The services are built on top of Azure Compute, Azure Storage, Azure Database, ServiceBus and EventHub.

Contributed to Bing's project Satori, a knowledge graph. Responsibilities included building and maintaining a continuously-running pipeline for the translation of curated normalized entity data into Bing's denormalized and inverted search index.

C++ AMP allows C++ developers to author computationally-intensive code which is offloaded to the GPU directly from their C++ code using a minimal set of extensions to the language and in a manner which weaves naturally into the C++ development experience. Personal responsibilities included:1) Staff an incubation team for investigating GPU targeting.2) Ramp-up of the team on existing GPU technologies and development of recommendations.3) Lead the development of a prototype to demonstrate possible productivity and performance gains from a C++-tightly-coupled approach. Secured the endorsement for productization of the product.4) Architected the shipping product (14 patents filed, 11 granted, 3 pending).5) Conducted reviews and negotiations with dependent teams in Windows, Visual Studio and hardware and tools partners to ensure adequate platform support and ecosystem momentum through the C++ AMP Open Specification.6) Evangelized the product through an early adopter program, online, and in industry conferences.

STM.Net started as an incubation effort between Microsoft and a major silicon partner, preparing for an anticipated wave of massively parallel CPU’s and the challenges their programmability would pose to developers. The project included co-design of instruction set extensions as well as modifications to the CLR and key .NET libraries, all in the support of transactional memory. The project culminated in the first ever .NET experimental release and the acquisition of a large stable of IP in the area. Responsibilities included:1) Management of the development team from early hand-off from research, through release and subsequent wind-down.2) Contribution of designs (18 patents filed, 15 granted, 3 pending) and key code components to the STM system.3) Representation of Microsoft in industry and academic forums, partner discussions.4) Shipped the first ever beta version of the .NET Runtime and Frameworks which included support for software transactional memory.

Led a development team within Office Communication Server 2007, later renamed to Lync, a distributed on-premise and federated conferencing produce was the first version of OCS to include on-premise data-conferencing (Live Meeting), in addition to the VOIP, telephony and presence capabilities. Specific responsibilities included:1) Lead a team responsible for Media Unit Controller hosting infrastructure.2) Lead the development of a software conferencing load-balancing and high-availability component.3) Contributed to the definition of and provided the implementation for an XML/HTTP/TCP/IP based conferencing protocol.

Led the development on an incubation project in the Live Meeting business unit which aimed to provide composable components and programming model for collaborative on-line data manipulation, e.g., live document co-editing. The project also included the rewrite of core Live Meeting components from Java to C#. Specific responsibilities included:1) Designed and implemented a .NET shared-data co-editing framework based on an optimistic concurrency control protocol. Developed a prototype application, modeled after OneNote.2) Redesigned and re-implemented the Live Meeting RPC protocol in .NET, using dynamic code generation, TCP/IP, HTTP, SSL and asynchronous IO.3) Mentored an intern whose project focused on hosting ASP.Net inside the Live Meeting server, thereby allowing serving conference-specific live content without incurring the cost of tailored client development.

BizTalk is a .NET business process automation server which implements a transaction and messaging orchestration language called XLANG. It supports the expression and exploitation of application level parallelism, atomic and long-running transactions, communication through message channels and more. The system is targeted at high-latency, long-running, business processes and as such it supports the automatic checkpoint and restart, and migration, of such processes. Main contributions included:1) Dehydration Engine: a component which persists and vacates from memory workflow instances which have been inactive for a while and which are predicted to remain idle. Developed inactivity prediction heuristics and system load monitoring algorithms (patent granted).2) Messaging: architected and implemented the abstraction of large XML-documents as mostly-random-access objects (through prefetch, delayed write, sharing/copy-on-write). Invented a mechanism that provides scalable XSL transformation of arbitrarily large XML documents (two patents granted).3) Hosting: architected and implemented the orchestration hosting story which took care of the following: unloading inactive .NET code; versioning of users’ orchestrations code and of the runtime; provisions to configure user code and custom loading of the CLR.4) Mentoring: mentored a college intern on a project that has cut by 70% orchestration persistence-related database traffic. Supervised a new hire working on diagnostics tools for the orchestration engine.5) Customer support: worked with key customers on a variety of issues, mainly around architecting their systems for high throughput and feeding requirements back to the product group.6) Miscellaneous: metadata cache, performance counters, exception infrastructure, interop services, NT service shell (multi-instancing, custom CLR hosting).

The BizTalk Server accelerator for RosettaNet was an add on to BizTalk Server 2000, implementing the business-to-business RosettaNet protocol, which is aimed at streamlining automated business transactions between silicon industry partners. My responsibilities included:1) Sole developer on the project responsible for all aspects of development and acting as a program manager most of the time as well.2) Development of messaging components for the ingestion and composition of RosettaNet messages.3) Development of BizTalk orchestrations implementing RosettaNet process templates.4) Development of configuration and setup deliverables.

Served as a teaching assistant in Operating Systems and Parallel and Distributed Systems courses.1) Rewrote significant parts of the curriculum on distributed systems, introducing Java RMI, CORBA and concurrent garbage collection.2) Set up distributed-systems coding and performance competitions that were highly popular as well as educational.

Development of advanced Java garbage collection algorithms for IBM's server platforms which featured extreme low-latency and non-intrusiveness to the program's execution. Specific contributions included:1) Invention of the Levanoni-Petrank garbage collection algorithm, which has been cited in numerous subsequent papers and has served for the basis of additional research in the area.2) Specific features in the AIX, AS400 and MVS collectors including weak references and analysis and modification of sequential concurrent algorithms to the weaker memory models involved.3) Development of a comprehensive garbage collection test suite.

Pitron was a software development firm providing DOS and Win32 software solutions to its clients. Specific contributions included:1) Hacking of the PowerBuilder runtime in order to retrofit it with Hebrew language support (PowerBuilder, C++, Win32).2) Development of computational geometry algorithms for a kitchen design application (PowerBuilder, C++).3) Development of serial communication and file transfer modules (C++, VB, DOS).