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I'm a CS student learning as i create some projects for myself and sometimes for my family and friends. Now i decided to open this profile to do just that but for people in the internet instead. For example: - I know python, C, arduino and HTML and i am aware all of these languages are for different specialties that's because i haven't yet found where i want to specialize in. - I can use Office apps; create and use data lists for calculation in Excel or create presentations in PowerPoint. - 3D Modelled in Fusion360 and printed useful gadgets for the house and some little parts for our car. I am learning Blender on the side. - Created a website, logo and templates to advertise for my mom's business, and another website to list and sort data because the game i was playing didn't have a replay system. - i am currently in the process of making my own game in godot game engine.

Dear Sir or Madam, My name is Oleksandr Prognimak. I have been working as a software developer for 33 years. I have extensive and longstanding experience in the following programming languages, frameworks, libraries, and technologies. Currently, my main focus is on the following IT areas: Java, JEE, Spring, Spring Boot, Angular, HTML5, JavaScript, TypeScript, CSS, SQL, PL/SQL, Docker, JUnit, Mockito, WireMock, Pact io, Maven, Oracle, PostgreSQL, and Azure Cloud. Here is the complete list of my skills: Skills, consulting, and development as a freelancer in the following areas: - Java: JDK 1.1 - 21, JSE, Swing, AWT - JEE: J2EE, JEE5,6,7,8,10 (Servlet, CDI, EJB, JPA, JMX, JMS, JSF) - Spring/Spring Boot: Spring Core, Spring Boot, Spring Test, Spring Data, Spring Integration, Spring Batch, Microservices - Cloud: Azure, AWS - Web Development/UI: Angular 4,7,10,16; Vue.js 2,3; TypeScript, GWT, Vaadin, JSP, JSF (RichFaces, PrimeFaces), HTML4, HTML5, JavaScript, JQuery, AJAX, Struts, Spring MVC - Web Services: SOAP, SOA, RESTful, Rest-API, OpenAPI, Swagger, RestEasy, Jersey, JSE HttpClient - ORM: Hibernate, EclipseLink, Apache OpenJPA - RDBMS/SQL: Oracle, Postgres, MySQL, MS-SQL, SQL, PL/SQL, MS Access, Teradata, H2 - App. Server/Servlet Container: Apache HTTP, Apache Tomcat, JBoss, Wildfly, Websphere, OC4J - XML Processing: AXIS-2, XPath, XSLT, XML Schemas, JAXP, JAXB - Build Tools: ANT, Maven, Gradle, Mojo - Source Code Management: GIT, GitLab, GitHub, Bitbucket, SVN, CVS - Case Tools/UML: Magic Draw, Software Architect, Together, ERWin, RationalRose - Report Tools: Jasper Report, BIRT Reports, Oracle Forms and Reports, Eclipse BI-Reports - Security: Java Security, JSSE, PKI, Websecurity, X509 - Test Tools/Testing: JUnit, TestNG, Cucumber, JBehave, Mockito, WireMock, EasyMock, Spring Test, Pact io, LoadTest, IntegrationTest, CI - MS-Office: VB, VBA, Excel-VBA, Access-VBA - Container Virtualization: Docker, Docker-Compose, Swarm, Kubernetes (K8) - Big Data: Apache Kafka, Zookeeper - Very Old Skills: C, C++, Basic, Pascal I am available immediately. Best regards, Oleksandr Prognimak

I'm a senior software engineer with consulting experience and a great passion for agility. I have almost 10 years of working experience as an employee and I've just started my new career as a freelancer because I value ownership and flexibility. What can I do for you? - Research, design, and implementation of Proof Of Concepts and MVPs - Implement cloud-native back-end systems based on Java/Kotlin/Python/JavaScript - Help you to migrate to the cloud or extend your AWS Cloud architectures - Implementing CI/CD pipelines for automated testing and deployment - Infrastructure as Code - Database design and tuning - Help your team become more and more Agile - Be the Servant Leader in your software development projects Tech skills The core of my technical skills is made of Java, Spring, and AWS. Around it, other languages and frameworks rotate and find a place depending on the project needs: Kotlin, Groovy, REST / RPC, SOA, Docker, Kubernetes, Hibernate, Relational/non-relational DBs, Event-driven architectures, etc. I need to have a 360 view of what I'm doing, and that's why I tend to participate in all aspects of software development: - Infrastructure: CI/CD, Monitoring (Prometheus & Grafana). - Front end: JavaScript, HTML/CSS, ReactJs, Ionic, PWAs. - Design: Mindmaps, UML, Figma, UI/UX. - Agile: Scrum, Kanban, Continuous improvement, value-driven delivery. - Stakeholders engagement: Active listening, reviews, documentation. My certifications: Tech: AWS Certified Cloud Practitioner, AWS Certified Developer, AWS Certified Architect Agile / PM: PMI Agile Certified Practitioner (PMI-ACP), Certified Scrum Product Owner (CSPO), Kanban Management Professional, Certified LeSS Practitioner, Scrum@Scale Practitioner Atlassian: Atlassian Certified Jira Administrator (ACP-JA), Atlassian Certified Confluence Administrator (ACP-CA).

⚡️ Do you have a new product to build, and are you looking for an expert backend developer you can trust to design and build the server side of your product? Look no further! I have more than 10 years of experience in web development with various programming languages (mostly PHP and Golang) in very different companies (from big tech to small non-profit projects). Now I specialize in building startups: ✅ I design, implement and deploy features as fast as possible ✅ I always add valuable metrics ✅ I write clean code that can easily grow and evolve for your product's needs. ✅ I can suggest existing services, open-source tools/libraries, or no-code/low-code solutions reducing development. I'm a full-time Upwork freelancer, and this is not just a side hustle for me. I can offer you a professional project delivery with high-quality code and clean architecture. I will take the time to understand your needs and ensure that the product works according to your vision. ⏩ If you're looking for a professional and experienced backend developer who will deliver the results you want, contact me right now to make progress together!

I'm a goal oriented physicist with 15+ years experience in project work including: Physics calculations from elementary mechanics to non-commutative quantum field theories Physics and detector simulations, using in particular Monte Carlo methods programmed in C++ Quantitative analysis (also outside of physics) using the python pandas data analysis library, advanced statistical methods - general regressions and error analysis with C++ libraries or R. Data and theory visualization is one of my principal concerns as it helps very much in understanding the relationships. Experience in Optimization - linear programing, integer programming, constraint programming Programming skills in the languages fortran, C, C++, java, javascript, matlab, python, R, prolog and others. Extensive symbolic calculations with the python based system SymPy, or using faster specialized systems programmed from scratch. Pure mathematics - calculus, geometry, discrete mathematics, combinatorics, mathematical logic, graph theory Numerical calculations using fortran, C or python Good communication skills in English, French and German I'm aiming at a responsible use of science.

I help companies design, develop, and stabilize production-grade embedded firmware in C and C++. With 10+ years of experience, I take ownership of complex embedded projects end-to-end — from hardware bring-up and low-level drivers to RTOS architecture, BLE and wireless connectivity, Embedded DevOps, build systems, and automated testing. My core areas include: ► Embedded firmware development C/C++ on ARM Cortex-M and Cortex-R, bare-metal systems, FreeRTOS-based architectures, device drivers, hardware bring-up, debugging, OTA updates, secure boot, and production-oriented firmware architecture. ► Connected devices and IoT Firmware for BLE-connected, low-power, and battery-powered industrial and IoT products using MQTT, CoAP, LwM2M, BLE, LoRaWAN, Zigbee, LTE-M, NB-IoT, and satellite communication. ► Embedded DevOps & build infrastructure Modern target-based CMake, cross-compilation toolchains, Docker-based development environments, Python automation, dependency management, reproducible builds, embedded CI/CD, static analysis, test orchestration, and hardware-in-the-loop testing. I am particularly useful when a project needs: • ownership of an existing or new firmware codebase • stabilization of unreliable embedded software • architecture improvements without unnecessary rewrites • hardware/software debugging across system boundaries • modernization of embedded build, test, and delivery infrastructure • support moving from prototype to production Selected recent projects: • Lead Firmware Engineer for a SIL2 human-detection system using mmWave radar and thermal imaging — ARM Cortex-R5F, FreeRTOS, C++17, CMake, real-time I/O • Battery-powered industrial IoT firmware — ESP32, FreeRTOS, LoRaWAN, satellite communication, GNSS, low-power optimization • Low-power BLE e-ink display system — nRF52840, C++17, MQTT, Python gateway • Real-time embedded audio DSP firmware — STM32, C++20, FreeRTOS, DMA, CMake Core stack: C, C++, Python, bare-metal firmware, RTOS-based systems, FreeRTOS, CMake, cross-compilation toolchains, STM32, ESP32, nRF52, and ARM Cortex-M/R/A. Connectivity: MQTT, CoAP, LwM2M, BLE, LoRaWAN, Zigbee, LTE-M, and NB-IoT. Testing and delivery: Catch2, Unity, Google Test, unit testing, integration testing, hardware-in-the-loop testing, Docker, and embedded CI/CD. Embedded audio and DSP: real-time DSP, embedded audio pipelines, I2S/SAI, MIDI, and OSC.