Upstaff Developer Profile Directory

- 12+ years of experience in IT, with 12+ years in Data Engineering and Data Architecture, including Oracle Databases, Data Warehousing, Big Data, and real-time streaming systems; - Experience in designing and maintaining enterprise Data Warehouses, leading cloud migration initiatives across Azure, AWS, and GCP; - Strong architectural expertise in ETL/ELT pipelines, batch/real-time processing, and data governance/quality frameworks; - Deep knowledge of Big Data ecosystems (Cloudera, Hadoop, Databricks, Synapse Analytics, HDInsight, AWS EMR); - Skilled in multi-cloud architecture design using Snowflake, DBT, Cosmos DB, Redshift, BigQuery, Athena, and Data Lake solutions; - Experienced in data streaming and integration with Apache Kafka, Apache Spark, PySpark, and Airflow; - Expertise in BI and reporting systems with Power BI and Tableau for data visualization and analytics delivery; - Strong foundation in database administration and security: Oracle EBS R12, RAC/ASM, WebLogic, SOA Suite, ERP systems, database audits and compliance; - Certified in Azure Data Engineer, AWS Data Analytics Specialty, Confluent Kafka, Oracle DBA.

• Full-stack engineer with 6+ years of experience with scalable architectures, clean APIs, and responsive interfaces • Developed and implemented backend systems for fintech and crypto applications using Node.js, NestJS, and Prisma, including integrations with multiple payment providers and API gateways, resulting in scalable architectures handling diverse data formats. • Optimized database interactions and workflows in corporate platforms with AWS Neptune, DynamoDB, Elasticsearch, and Redis, accelerating integration tests by 15% through redesigned test environments. • Built asynchronous event handling and caching mechanisms with NATS, Redis, and BullMQ for product management and payment systems, improving reliability via message-driven communication. • Integrated monitoring tools like Prometheus and Grafana in deployment pipelines using GitLab CI, enabling metrics collection for endpoints and integrations in real-time services.

- 10 years of software development experience - 7 years of commercial experience with TypeScript and 6 years of commercial experience with Node.js - Upper-Intermediate English - Available ASAP

• IT Systems Engineer with over 15 years of experience in NetOps, SysOps, and IT infrastructure management, specializing in hybrid cloud environments, cybersecurity, and automation. • Administers Azure, VMware, and Microsoft ecosystems, including Intune for device management, Veeam for backups, and PowerShell scripting for operational efficiency. • Certifications in AZ-900, Sophos, and Veeam.

• Strong front-end expertise across JavaScript/TypeScript, React, Vue, Next.js,Nuxt, understanding of UI/UX principles, responsive design, microservice and component architectures. • Skilled in developing scalable SPA/PWA solutions, integrating complex front-end logic, and collaborating with backend services using Node.js, REST, SSR, Postgresql and CI/CD pipelines. • Clean, maintainable code and transforming product requirements into user experiences. • Contributed to enterprise-level platforms with advanced dashboards, real-time features, route-mapping components, performance optimizations, and long-term codebase improvements. • Creative, detail-oriented full-stack engineer with 6+ years of experience building modern web applications.

- Experienced Full-Stack Software Engineer with over 12 years in enterprise application development, including 5+ years of hands-on expertise in Power Platform, Canvas Apps, Model-Driven Apps, Power Automate, and Azure Functions. - Specialized in designing, building, and stabilizing complex PowerApps solutions for large-scale enterprise clients across industries such as manufacturing, HR, logistics, and advisory services. - Proficient in Canvas App architecture, custom pages, PCF controls, Dataverse, and low-code/no-code automation. Strong background in Azure integrations, C#/.NET backend development, and React-based UI components. - Skilled in refactoring legacy PowerApps solutions, optimizing performance, and implementing robust approval workflows with Microsoft Teams and DocuSign integrations. - Trusted by Microsoft Inner Circle Partners for delivering high-quality, scalable, and maintainable solutions under tight deadlines. - Master's degree in Applied Mathematics and Computer Science. - Experience in developing CRM systems, banking solutions, web-based platforms, enterprise resource planning systems, and fatigue management systems. - Data analytics, data engineering, data extraction/ETL, artificial intelligence & machine learning, data mining and management, data science, and data visualization. - Familiarity with Adobe Commerce & Experience, Drupal, Microsoft (AX, Dynamics 365, SharePoint), MuleSoft, Oracle NetSuite, Salesforce, and SAP.

• 11 years of practical experience in software development. • Excellent experience with application engineering, architecting and development. Capable of analyzing, designing complex, high loaded systems, efficient resources management and problem solving. Quick learner of new technologies. • Fluent English level.

• 7+ years with JavaScript and TypeScript • Vue.js (Nuxt, Vuex, Vue Router) • React (Redux, styled-components, MobX-state-tree, Next) • Strong skills with HTML, CSS, SCSS, SASS; • Server-Side: PHP (Laravel, WordPress), MySQL, MongoDB, NodeJS (CRUD, auth, base manipulations), NestJS. NextJS, Nuxt • Upper-Intermediate (B2/C1) English.

- Full-stack engineer with 7 years of .NET, MS Azure, and JavaScript. - Proven achievements include initiating and building a microservice architecture from scratch for data science computations and reducing latency by optimizing CPU-bound calculations.

- IT experience starting in 2015. - Experience with the full lifecycle of designing, developing, installing, configuring, and maintaining applications on SharePoint 2007/2010/2013/2016/2019 Online. Nintex products (Workflows, Forms) - Strong knowledge of .NET, C#, ASP.NET, HTML (HTML5), JavaScript, CSS (CSS3). - Experience with Dynamics CRM, Power Apps, CDS, Power Automate, TypeScript, jQuery, Bootstrap (3, 4), Data Tables, SharePoint libs, ReactJS, React-Redux, Vue.js, Semantic UI. - Extensive experience with MS Visual Studio 2012/2013/2015/2017/2019, VS Code, TFS, Jira, Git. Android, Windows Phone, Xamarin, Outlook Add-ins, Outlook framework, React Native, Parse Platform, Firebase. - Upper-Intermediate English

- Over 20 years in IT with a master's degree in Cybernetics - Proficient in Ansible: Extensive experience in deploying and managing Ansible-driven infrastructure, particularly highlighted in roles as SRE/Architect (Aug 2018 – Present) and Senior DevOps Engineer/Lead Sysadmin (Aug 2020 – May 2021), where Ansible was pivotal in scaling a learning platform from 1,000 to over 100,000 students and in key migration projects. - Expertise in Windows Environments: Demonstrated strong skills in managing Windows environments, especially as an SRE/Architect (Aug 2018 – Present) and CTO (2013 – Mar 2022), involving Windows AD+MSSQL backoffice management and ITIL Service Management framework implementation on Windows platforms. - Versatile IT Roles with Ansible and Windows: Across various roles including IT Service Manager, Senior DevOps Engineer, and CTO, consistently applied Ansible and Windows technologies in large-scale infrastructure projects and day-to-day operations, showing versatility and depth in these areas. - Managing the growth of the learning platform from 1,000+ to 100k+ active students - ITIL v3 Foundations Certificate - More than 5 years of experience in leading ITIL Service Management capability and implementing end-to-end ITIL Service Management framework - Strong experience in using ServiceNow and Jira Service Desk for ITSM - Experienced IT/Telecom Specialist - UNIX and UNIX-Like OS (FreeBSD, Linux, SunOS, MacOS X) background - Over 20 years of Windows/windows server family. From NT4.0 /win3.1 up to Server2019. As well as upgrading Up to 15 years with server HW, and 13 years with storage solutions - Infrastructure problem-solver with a strong view on reliability, performance, and disaster recovery - Fluent English

- 15+ years of professional experience in system administration and Windows/Linux IT infrastructure management; - Knowledge of the full device lifecycle, debugging, patching, software deployment; - Experience with virtualisation/containerisation technologies (Hyper-V, VMware, Proxmox, Docker) and cloud platforms (AWS, Azure); - Automation experience using Ansible, PowerShell, and Bash scripts; - Experience with infrastructure monitoring and troubleshooting (Zabbix, Nagios, Grafana, CheckMK, Splunk, ELK stack); - Skilled with backup and disaster recovery solutions (Veeam, Avamar) and centralised log management (rsyslog, ELK); - Experience with IAM, VPN configuration, and secure remote access management; - Knowledge of ITSM tools and workflows, including JIRA, Asana, GLPI, and Notion; - Experience with SaaS platforms administration and integration (Google Workspace, GitLab, Tableau, HubSpot, Miro, Slack, etc.); - Led the team of system administrators, documented processes, and managed assets.

Experienced IT professional with more than ten years of expertise in Cloud Systems, DevOps, Machine Learning and MLOps practices. Pavlo specializes in building scalable and reliable ML pipelines, optimizing models for real-world use, and managing full lifecycle of machine learning projects. Pavlo's technical skills include TensorFlow, PyTorch, Kubernetes, Kubeflow, Terraform, Python, as well as cloud platforms and services such as AWS SageMaker and Azure Cognitive Services.

Ivan is a Lead Kotlin/Java Engineer with solid experience in backend and Android development. He builds reliable and maintainable applications, works well with cross-functional teams, and enjoys improving codebases and system architecture. Ivan is comfortable mentoring others and contributing to both mobile and backend projects, making sure they run smoothly and efficiently.- Software Engineer with 5+ years of experience in developing Android and backend solutions in the healthcare, fitness, and automotive industries; - Strong Skills with Kotlin, Java, and TypeScript, creating Android applications on Jetpack Compose, Firebase, Android SDK, KMM, as well as backend solutions on Spring Boot (and basic experience with Node.js / React for integrations and prototypes); - Experienced with AWS (Serverless, Lambda, S3, API Gateway) and GCP, builds cloud infrastructure, and is undergoing Google Cloud certification; - Skilled with Firebase as a backend platform; - Experience CI/CD, Docker, GitHub Actions, works according to Agile principles; - Interested in implementing AI models in production solutions.

- 10+ years in Forecasting, Analytics & Math Modelling - 8 years in Business Analytics and Economic Processes Modelling - 5+ years in Data Science - 5+ years in Financial Forecasting Systems - Master of Statistics and Probability Theory (diploma with honors), PhD (ABD) - BSc in Finance - Strong knowledge of Math & Statistics - Strong knowledge of R, Python, VBA - Strong knowledge of PostgreSQL and MS SQL Server - 3 years in Web Development: Knowledge of C#, .Net and JavaScript for web development - Self-motivated, conscientious, accountable, addicted to data processing, analysis & forecasting - Engineering, Understanding AI and LLMs

- Oriented Data and Business Intelligence Analysis engineer with Data Engineering skills (SQL, Airflow). - 6+ years of experience with Tableau (Certified Tableau Engineer) - Experience in Operations analysis, building charts & dashboards - 20+ years of experience in data mining, data analysis, and data processing. Unifying data from many sources to create interactive, immersive dashboards and reports that provide actionable insights and drive business results. - Adept with different SDLC methodologies: Waterfall, Agile SCRUM - Knowledge of performing data analysis, data modeling, data mapping, batch data processing, and capable of generating reports using reporting tools such as Power BI (advanced), Sisence(Periscope) (expert), Tableau (Advanced), Data Studio (Advanced) - Experience in writing SQL Queries, Big Query, Python, R, DAX to extract data and perform Data Analysis - AWS, Redshift - Combined expertise in data analysis with solid technical qualifications. - Advanced English, Intermediate German - Location: Germany

- DevOps/Cloud Architect with 10+ years of experience in DevOps, Cloud, and MLOps engineering; - Led large-scale projects including Hadoop-to-AWS OLAP migration, cutting operational costs by 25% and improving system performance; - Expertise in Kubernetes-based microservices architectures, AWS Fargate, and high-availability designs achieving 99.99% uptime; - Experience in multi-cloud (AWS, GCP) and hybrid on-prem/cloud adoption; - Skilled in containerization and orchestration with Docker, Kubernetes, and OpenShift; - Advanced in Infrastructure as Code (Terraform, Helm, Ansible) and GitOps/CI/CD automation (GitLab CI, GitHub Actions, ArgoCD, Jenkins); - Delivered automated CI/CD for serverless apps with AWS SAM, reducing deployment time from hours to 20 minutes; - Experienced in MLOps with AWS Sagemaker and Kubeflow, building end-to-end ML workflows; - Skilled in DevSecOps, implementing RBAC, Secrets Manager, SAST/SCA scans, reducing vulnerabilities by 50%; - Skilled in cloud networking, storage, and big data systems (Spark, Hadoop, EMR, Kinesis); - Expertise in Python, Go, Java, and Bash for automation and integration; - Experience of technical leadership, mentoring engineers, and guiding 50+ developers in Kubernetes/Docker adoption; - Experienced in architectural design, Cloud as Code initiatives, and cross-team collaboration; - Certified Kubernetes Administrator (CKA), AWS Solutions Architect, and GCP Professional Cloud Architect.

- 10+ years in AI/ML & Data Science, high-performance systems, 10+ years in DevOps and 5+ years in MLOps; - Expertise in Python, Asyncio, Aiohttp, Redis, PostgreSQL, Neo4j, ElasticSearch, and cloud platforms (AWS, GCP, Azure); - Experience with high-load environments, Redis queues, custom assemblies, and data isolation in production-ready systems; - Skilled in Active Directory integrations, NLP, similarity engines, and AI-driven architectures, with focus on context engineering, summarization, and agentic RAG pipelines (LlamaIndex, Quadrant, IntentRouter); - Experienced with both text and voice AI models (speaker identification, speech-to-text) and ontology-driven algorithms (PCA, classifiers, semantic understanding from scratch); - Knowledge of AWS services (S3, EC2, Fargate, EKS, Bedrock pipelines), Kubernetes, CI/CD automation, and cloud migrations (AWS to GCP); - Passion for NLP, AI, and similarity engines, with preference for applied AI/ML approaches over purely statistical methods; - Experienced leadership in R&D and engineering management, delivering production-ready AI/ML solutions in defense, search, and semantic platforms.

- Senior Blockchain Engineer with 20+ years in software development and a strong track record in the Solana ecosystem; - Experienced in Rust for Solana smart contract development, with extensive experience building on-chain programs for DeFi, staking, NFT, and messaging platforms; - Skilled in full-stack development: React and TypeScript for front-end dApps, Node.js and Python for backend systems; - Experience with AWS and Google Cloud for scalable cloud applications and infrastructure; - Ability to lead teams and manage projects, including migrating Ethereum products to Solana (Community Gaming); - Skilled in blockchain frameworks and tools: Anchor, CPI, Metaplex, Token-2022; - Strong SQL background with hands-on experience in PostgreSQL, MySQL, and SQLite; - Experienced in system architecture, Linux server administration, and distributed applications; - Notable achievements include leading Solana product delivery for NeuralBond (on-chain messaging) and Palus Finance (staking platform).

* 7 years of experience in a Web Development team environment. Experience with Web Technologies: HTML5, CSS3, PHP, Symfony, Laravel, Javascript, Vue.js and jQuery. * Working knowledge of Data Formatting Technologies: XML, XSL, and JSON. Experience with Web Servers: Apache and NGINX. * Strong understanding of Utility Languages: FTP, SSH, Shell Scripting. * Working knowledge of Content Management Systems: WordPress, modX. Experience with Common Development tools (Git, SVN, etc).

- Data Engineer with a Ph.D. degree in Measurement methods, Master of industrial automation - 16+ years experience with data-driven projects - Strong background in statistics, machine learning, AI, and predictive modeling of big data sets. - AWS Certified Data Analytics. AWS Certified Cloud Practitioner. Microsoft Azure services. - Experience in ETL operations and data curation - PostgreSQL, SQL, Microsoft SQL, MySQL, Snowflake - Big Data Fundamentals via PySpark, Google Cloud, AWS. - Python, Scala, C#, C++ - Skills and knowledge to design and build analytics reports, from data preparation to visualization in BI systems.

* Master’s Degree in Computer Science * 19 years in Software Engineering: Python, Kotlin, Swift, C/C++, and TypeScript in software engineer, team lead, and software architect roles. * Data processing with numpy, pandas, moving pandas, airflow, spark,and nifi. * Designed and implemented a scalable multi-microservice backend for an enterprise AdTech CRM, integrating 10+ third-party services and streamlining client management operations. * Built and deployed a billing system for a money exchange platform, integrating third-party payment systems and delivering a user-friendly web interface for seamless transactions. * Optimized data processing pipelines by implementing quantiles on streams, enabling real-time analytics and supporting large-scale data operations for scientists and business stakeholders. * Extensive background in data processing and reporting. Good abilities in SCM tools like Git, and in multi-threading and networking. Strong skills in Docker, gRPC; * Cloud service platforms: AWS, Google Cloud, and MS Azure; * Experience with DBMS, PostgreSQL, MySQL, MongoDB; * Certificated knowledge of Blockchain; * Certified Senior Go Engineer (12 years with GoLang).

Data Science engineer with over 3 years of practical commercial experience in Natural Language Processing (NLP), Computer Vision (CV), and Recommender Systems. Available skills in data analysis using machine learning approaches to satisfy business needs, problem-solving, and other tasks in this sphere. A person, focused on obtaining the best results, using all knowledge and skills. Friendly and ready to help the team complete tasks and solve certain problems.

- Python Developer with 5+ years of experience in backend development and automation: Django (3 years), Flask, and Fast API for web application development; - Maintaining and supporting production systems using FastAPI and SQLAlchemy, API integrations including financial services and crypto platforms; - Built and supported Telegram bots and automation tools for business operations; - Docker containerization: Docker-compose, Docker via Render (serverless). Deployment and Linux server management (Ubuntu); - Familiar with data reporting and basic analytics through internal monitoring tools; - Open to part-time and distributed team environments with a focus on ongoing system support. - Reached the Top 10 freelance Python engineers on the local market at the age of 17 (showcasing early talent and initiative). - Worked on projects with a multi-million user base, contributing to scalable architecture and high-load system stability. - Successfully launched an educational platform in the USA, now actively used by students, tutors, and academic institutions. - Represented the dev team at the international Wefi Beyond Banking Summit, delivering a product presentation to a global fintech audience.

Software Engineer with proficiency in data engineering, specializing in backend development and data processing. Accrued expertise in building and maintaining scalable data systems using technologies such as Scala, Akka, SBT, ScalaTest, Elasticsearch, RabbitMQ, Kubernetes, and cloud platforms like AWS and Google Cloud. Holds a solid foundation in computer science with a Master's degree in Software Engineering, ongoing Ph.D. studies, and advanced certifications. Demonstrates strong proficiency in English, underpinned by international experience. Adept at incorporating CI/CD practices, contributing to all stages of the software development lifecycle. Track record of enhancing querying capabilities through native language text processing and executing complex CI/CD pipelines. Distinguished by technical agility, consistently delivering improvements in processing flows and back-end systems.

- 12+ years of experience in IT - 10+ years of experience with XSLT - Writing, testing and maintaining the XSLT code that applies some filtration and conditions on XML - Converting IATA NDC Standard XML Content format into IATA NDC Standard XML format using XSLT - Familiar with many processing engines like Saxon (Java) - libxslt (C) - Python’s package - Upper-intermediate English - Available ASAP