罗伯特Špendl

OVERVIEW
一个可扩展的物联网集成项目，能够处理100多万用户,每秒000个请求. 作为后端开发人员和网络管理员, 开发自定义Nginx模块，优化网络性能和安全性.

可交付成果
•Go客户管理的后端开发, 使用短信服务的双因素身份验证, settings, 以及任何其他与帐户相关的功能.
•建筑, 文档, Go代码用于在多个分片上运行连贯的数据库和内存缓存, 每个服务于一个帐户子集.
•建筑, 文档, 和C代码的自定义Nginx模块路由请求到多个后端实例. 平行的实例, 共享内存, 解码JWT令牌, 以及上游服务器的诊断都在该模块中实现.
•Nginx-Go-PostgreSQL混合环境的复杂Go性能基准测试.
• Set up a bare-metal Kubernetes environment on Linux CentOS to run the back end and administration of Docker Swarm during development up to the production phase.
•建筑 of PostgreSQL database consistency verification and a Docker/Bash script to manage upgrade and downgrade processes during development, staging, 和生产.

OVERVIEW
定制设备的废水处理和空气排放控制与定制反应器和洗涤器, 包括定制电子产品的开发, 软件用于主plc, 后端数据分析, 以及远程管理和报告.

可交付成果
•工艺流程和设备设计(AutoCAD).
•建筑 and design of custom electronic components (microcontrollers and sensors) and set up of processes for serial production and testing (KiCad).
•用于AVR和ARM处理器的C语言控制器和传感器固件.
•用于高级过程控制和远程访问设施的Python和Rust软件.
•建立一个高Availability、多节点的Docker集群.
•Apache卡夫卡和Rust后端与PostgreSQL远程数据存储.
•Go和Rust后端，用于集中管理设备.
• Vue.Js前端, 为污水处理厂操作员提供远程访问, 具有图形表示过程和交互式数据可视化.
• Rust and PostgreSQL data-mining tools to perform statistical analysis on millions of records to identify component failures, 穿的风险, 优化运行参数.

OVERVIEW
A software gateway and prototype of hardware to enable communication of charge points that only support local Modbus protocol over RS-485 with a remote server over the internet. This, in turn, enables communication of the client’s electric vehicle charging station with the provider’s server using the Open Charge Point Protocol (OCPP). 作为独立插件模块的最终产品正在开发中.

可交付成果
- Rust软件，与充电点通信，检索操作数据, 充电电流, 一边是用户标识, 并与另一端的OCPP服务器通信, 为充电站的实时控制提供了可能.
-低成本的设计, 占用空间小, 工业级可编程逻辑控制器，可以在远程位置运行网关软件.

OVERVIEW
A standardized energy meter that can use a LoRa wireless communication network to enable remote energy consumption metering without using mobile readers.

可交付成果
- Design of the electric circuit for the energy meter device with ultra-low energy consumption (two years of operation from a single battery) and highly accurate and low-noise temperature reading.
- C软件，使LoRaWAN数据传输从仪表和远程启动固件升级.

提供现代分析的平台, 市场营销, 经典线下商店的支付处理工具也在开发中. As CTO, 我负责代码库外包部分的整体技术和控制.

OVERVIEW
Municipalities partly finance their infrastructure by collecting fees from investors based on the costs of existing and planned infrastructure in the municipality. 计算费用, each land lot has to be analyzed for existing and available infrastructure and the costs of construction for any missing infrastructure, 如自来水厂或污水管道. 因为收费必须在整个直辖市统一, 有必要对数万块允许建设的地块进行分析.

可交付成果
-开发一套全面的PostGIS和Python脚本，以实现数据导入, 验证, and spatial data cleanup; perform complex queries; and generate maps.
-写入Vue.js和OpenLayers前端和一个Rust后端MVT tile服务器, 允许用户查看数据并生成报告.

一个关于Tezos智能合约客户端性能改进的专门短任务，用Rust编写. The work includes low-level improvements of details on memory management and alternative parsing libraries, the performance testing tools I've developed proved these refactoring provided significant speed improvements of the code.