Dan Napierski, Developer in Boston, MA, United States
Dan is available for hire
Hire Dan

Dan Napierski

Verified Expert  in Engineering

Software Developer

Location
Boston, MA, United States
Toptal Member Since
April 28, 2016

Dan是一名专注于区块链技术应用的软件架构师和技术专家. 他拥有多年的专业咨询服务经验,为从初创公司到跨国公司的客户提供服务. 他擅长将严格的测试和防弹代码引入棘手的工程挑战. He has deep expertise in many aspects of artificial intelligence, blockchain, machine learning, and automation.

Portfolio

Napierski Consulting
Stellar SDK, Ethereum, Litecoin, Bitcoin, Blockchain
Phfeast, Inc.
OAuth, Azure SQL, Microsoft SQL Server, Entity Framework, Swift, .NET...
PolyRemedy, Inc.
Mobile, Android, Microsoft SQL Server, Web Services, C#, .NET

Experience

Availability

Part-time

Preferred Environment

Xcode, Git, Python, Node.js, Atom

The most amazing...

...我编写的程序能够处理法律合同来确定关键日期和合同中指定的金额.

Work Experience

President

2014 - PRESENT
Napierski Consulting
  • 使用松露和自定义节点在以太坊区块链上开发和部署了Solidity合约.js React front end. Executed RPC commands using Web3.js to publish and execute contracts on test and main networks.
  • Architected the payment and collateral system on Stellar blockchain. Developed a fork of Stellar core in C++ to support custom ledger features.
  • Created an alt-coin, forked from Litecoin, capable of storing and querying text records on the blockchain.
  • Developed signal and trading bots using cryptocurrency exchange APIs in Node.js.
  • Administered full Ethereum, BTC, 和LTC节点在本地开发环境和虚拟基础设施中使用Ansible, Terraform, and Docker.
  • Audited a complex Node.js React/Redux web应用程序,以识别安全问题和性能问题. 在Azure中自动化部署和在Git中管理拉取请求的推荐步骤.
  • 领导使用AWS SageMaker、Python和Mathematica开发多个模型. 在一个有监督的学习环境中,使用MLS列表准确地预测了大城市的房屋上市价格.
  • 使用IBM的沃森创建了一个聊天机器人,该机器人可以处理法律合同,以确定有效日期和其中包含的关键条款.
Technologies: Stellar SDK, Ethereum, Litecoin, Bitcoin, Blockchain

President

2014 - 2016
Phfeast, Inc.
  • Founded Phfeast, Inc., as a software company engaged with social issues. 制定了一个忠诚计划,为有需要的家庭提供免费的餐厅餐点.
  • Created a suite of secure, high-performance, RESTful web services in .负责全面支持流行的AngularJS web应用和移动应用原型.
  • 开发了自动电子邮件提醒订阅服务和档案管理系统, regularly sending thousands of custom messages per day.
  • 执行web应用程序性能审计和分析,从而显著改善了页面加载时间.
  • 实现了自动化的功能测试、负载测试和执行报告,使用 .NET tools, SQL Server Reporting Services, and Lua web API scripts.
  • Integrated Google maps, Amazon Web Services, OAuth providers, and social media plugins within a responsive web offering.
  • 实现了SEO预渲染技术,以支持互联网搜索引擎对AngularJS页面的正确索引.
技术:OAuth, Azure SQL, Microsoft SQL Server,实体框架,Swift, .NET, RESTful Web Services

Director of Software Engineering

2012 - 2013
PolyRemedy, Inc.
  • Delivered a complete Android smartphone app, a RESTful web service API, and a dynamic HTML5 user interface within a 12-month timeframe.
  • 为医疗保健专业人员提供了一个一流的家庭患者评估和治疗实现网络欧博体育app下载.
  • 通过实施敏捷方法,推动现有工程团队向高效团队的转变, code reviews, and automated testing.
  • Managed the engineering department budget, staffing, and multiple product schedules throughout the development lifecycle.
  • Worked closely with heads of marketing, clinical research, and operations to coordinate product deliveries.
  • Analyzed camera sensor data from multiple smartphone models.
  • Incorporated event-driven text messaging into our mobile app.
Technologies: Mobile, Android, Microsoft SQL Server, Web Services, C#, .NET

Software Engineering Team Lead

2011 - 2012
PolyRemedy, Inc.
  • Led a distributed team of engineers, designers, 质量保证专业人员发布了一款创新的软件产品,适用于家庭健康助理和来访护士.
  • 将不同的用户需求和利益相关者的愿望转化为可实现的里程碑, resulting in on-time and well-tested product delivery.
  • 管理web应用程序可用性和医疗产品履行操作.
  • Served as software architect, DevOps manager, and security chief.
  • 生成了一个可伸缩的SQL Server数据库设计和实体框架映射,便于高效查询和检索 .NET web services and automated services.
Technologies: JavaScript, HTML, Microsoft SQL Server, Web Services, C#, .NET

Principal Software Engineer

2009 - 2011
Unidesk Corporation
  • Integrated LDAP user accounts, VMware vSphere and View resources, and external APIs to create a broad set of secure .NET web services to manage virtual machines and application deployment.
  • Integrated ActiveMQ messaging and inter-process communication using .NET remoting for a scalable, distributed architecture.
  • 重新设计关键业务应用程序,以提高性能、可靠性和可维护性.
  • 在一个由六名开发人员组成的跨职能团队中担任Scrum主管,负责一系列产品特性.
  • Automated testing and deployment in both Microsoft .. NET IIS和Linux Apache Mono环境,使用Python, NUnit, NCover和Bamboo.
Technologies: JavaScript, VMware vSphere, LDAP, ASP.NET, Python, Microsoft SQL Server, Web Services, C#, .NET

Founder and Chief Architect

2006 - 2009
Napierski Consulting
  • 在开发提供自定义财务报告的大型数据驱动web应用程序期间,指导客户团队的软件开发.
  • 使用SQL Server和NHibernate重新设计客户端数据模型,实现高效的数据库查询.
  • 为大中型客户采用敏捷开发方法提供建议.
  • 为客户完成网络技术评估,以提高网站性能, security, and usability.
  • Developed custom software testing tools for Mathematica.
技术:Mathematica, JavaScript, Java, NHibernate, Microsoft SQL Server, ASP.NET, .NET, C#

Senior Software Engineer

2004 - 2006
Arts Alliance Labs, Inc.
  • 为某大型DVD租赁公司开发了基于协同过滤技术的推荐服务器.
  • 在一个广泛的欧洲数字电影计划中,为多个网站设计并实施会员和管理系统.
  • 推动许多最佳实践的采用,包括测试驱动开发.
  • Set up a continuous integration server to automate builds and deployments.
  • Created a tiered architecture for a high-performance web application.
Technologies: NUnit, Microsoft SQL Server, XML, HTML, .NET, ASP.NET, C#

Software Engineer and Scientist

2001 - 2004
Charles River Analytics, Inc.
  • 针对某政府研究项目,基于识别启动决策(RPD)模型,重新设计了高级人类行为表征(HBR).
  • 开发了一个基于组件的体系结构,允许用户构建各种自主智能代理.
  • 组织开发团队与政府赞助商之间的沟通.
  • 在建模和仿真中的行为表示会议上共同撰写并发表了一篇关于该项目的研究论文.
  • Implemented Bayesian network, fuzzy logic, 和专家系统技术集成在国防部的模拟中.
Technologies: Python, JavaScript, MATLAB, Java
2016 - 2016

Certificate Backed By MIT in Fintech: Future Commerce

GetSmarter - Online

2000 - 2001

Master of Science Degree in Computer Science

Harvard University - Cambridge, MA

1994 - 1998

Bachelor of Science Degree in Economics

Duke University - Durham, NC

Libraries/APIs

API Development, Web3.js, Node.js, Google API, Amazon API, Google Maps, D3.js, Entity Framework, React, Twilio API, jQuery, Facebook API

Tools

Mathematica, Microsoft Visual Studio, Ninject, Xcode, Git, Microsoft Team Foundation Server, Atom, VMware vSphere, Stellar SDK, Eclipse IDE, MATLAB

Frameworks

.NET, Flutter, NUnit, NHibernate, Entity, ASP.NET, ASP.NET MVC 5, ASP.NET Web API, ASP.NET MVC, AngularJS, Bootstrap

Paradigms

Agile Software Development, Continuous Integration (CI), DevOps, Cross-platform, Concurrent Programming, Object-oriented Design (OOD), Test-driven Development (TDD), Design Patterns

Languages

c#, PHP, Solidity, Python, Java, Swift, c++, SQL, JavaScript, XML, HTML, Haskell, Lua

Platforms

Blockchain, Windows, Ethereum, iOS, Android, Azure, Mobile, Linux

Storage

Microsoft SQL Server, Azure SQL, MySQL

Industry Expertise

Banking & Finance

Other

Bitcoind, Fintech, Cryptocurrency, Machine Learning, RESTful Web Services, Artificial Intelligence (AI), Web App Development, Mobile App Development, API Design, DApps, Software Development, ÐApp, Blockchain Development, Front-end Development, IBM Watson Analytics, Mobile Wallet, Bitcoin, SSL Certificates, Cryptography, Agile Software Testing, Video Streaming, Computer Graphics, Natural Language Processing (NLP), Computer Vision, Location Services, Network Programming, Optimization, Virtualization, Bayesian Statistics, GPT, Generative Pre-trained Transformers (GPT), OAuth, Web Services, LDAP, Litecoin

Collaboration That Works

How to Work with Toptal

在数小时内,而不是数周或数月,我们的网络将为您直接匹配全球行业专家.

1

Share your needs

在与Toptal领域专家的电话中讨论您的需求并细化您的范围.
2

Choose your talent

在24小时内获得专业匹配人才的简短列表,以进行审查,面试和选择.
3

Start your risk-free talent trial

Work with your chosen talent on a trial basis for up to two weeks. Pay only if you decide to hire them.

Top talent is in high demand.

Start hiring