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I am a Senior Power Systems Engineer specializing in **grid interconnection, compliance, and system impact studies** for **renewable generation, BESS, hybrid plants, conventional generation, and large industrial / data center loads**. I deliver **utility-, ISO-, and TSO-ready studies** using **PSS®E, PowerFactory, PSCAD, and ETAP**, covering the full range of technical assessments required for project development, connection applications, design review, and compliance demonstration. My work supports **Solar PV, Wind, BESS, Hybrid plants, conventional power facilities, and data centers**, with studies prepared in a way that reflects how utilities and system operators actually review **models, assumptions, plots, test evidence, and compliance conclusions**. I support clients from early-stage screening through submission-ready packages, including clear RFIs, defensible assumptions, clean technical plots, and structured reports suitable for utilities, TSOs, ISOs, developers, EPCs, and owners’ engineers. Core Services Grid Interconnection & Compliance Studies * Load flow and operating case assessment * Short-circuit / fault level calculations * RMS dynamic stability studies * Grid code and interconnection compliance benchmarking * Utility / ISO submission-ready technical reports * Model review, validation, and technical support during review cycles ### Renewable Generation / BESS / Hybrid Plants * Solar PV, Wind, BESS, and Hybrid plant interconnection studies * LVRT / HVRT / LFRT / HFRT assessment * Reactive power capability and voltage control performance * Frequency response and plant controller performance * Weak-grid assessment and control interaction review * PRC / MOD / MQT / G99 / G5 compliance support ### Data Center & Large Load Studies * Grid connection studies for **large industrial loads and data centers** * Load flow, contingency, and thermal capacity assessment * Point of interconnection screening and transfer capability review * Motor starting / dynamic load behavior review where applicable * Voltage stability and reactive power performance assessment * Large load ride-through and dynamic behavior assessment * Support for connection strategy, substation concept review, and utility-facing technical documentation ### Design & Engineering Support * Single-line diagrams (SLD) * Cable and conductor sizing * Grounding / earthing grid studies * Surge arrester selection and insulation coordination * Protection coordination and selectivity studies * Relay setting review and interface logic support ## Technical Services ### Short-Circuit Studies * Fault calculations to IEC 60909 and IEEE methods * Breaker duty and X/R ratio verification * IBR fault contribution assessment * Faulted operating condition evaluation ### Dynamic (RMS) Studies * Transient stability and oscillatory damping * Frequency response and control performance * LVRT / HVRT / LFRT / HFRT benchmarking * Weak-grid and controller interaction studies * Plant controller and model tuning support ### EMT Studies * IBR control interaction and converter dynamics * Fast transient and weak-grid EMT validation * Special operating scenarios and black-start studies where required * OEM / utility EMT model review and benchmarking ### Protection & Control Interface * Relay coordination support * PRC-019 interface checks * Voltage / frequency protection coordination with IBR controls * SCADA / Modbus / IEC 61850 signal and interface logic review ## Grid Codes & Standards Experience **United States** NERC PRC(029 024 019) & MOD(025 026 027 032) standards, ERCOT, PJM, NYISO, MISO, SPP, CAISO IEEE 519, IEEE 1453, IEEE 1547 ERCOT model quality and interconnection processes **United Kingdom** ENA G99 ENA G5/5 P28 / P29 DNO submission and acceptance support **Germany / EU** VDE-AR-N 4110 / 4120 FGW TR3 / TR4 / TR8 references Additional regions can be supported based on project documentation and applicable grid-code requirements. ## Software * PSS®E * DIgSILENT PowerFactory * PSCAD * ETAP * MATLAB / Simulink * AutoCAD ## Deliverables * Technical reports * RAW / DYR files * PowerFactory projects * PSCAD cases * ETAP models * Parameter summaries * Validation plots * Submission support documents ## Why Clients Work With Me * Clear scope definition from the start * Strong RFIs and efficient data collection * Technically defensible assumptions * Utility-ready reports and plots * Combined RMS and EMT capability I can support complete interconnection packages or single-study scopes, depending on project needs. If you have an RFP, grid-code requirement, interconnection document, utility feedback package, or study scope, I can review it and help define a clear technical approach, deliverables list, and schedule.

Need a data platform that works in production, not just on a whiteboard? I design and build end-to-end data systems that turn fragmented raw data into trusted analytics and AI-ready infrastructure. 10+ years experience. Founder of Vyntics. Delivered consulting solutions for AT&T, Patreon, Jumio & Acko. WHAT YOU GET: Reliable ETL/ELT pipelines (batch + streaming) that keep dashboards accurate and stop 2 AM debugging Cloud data platforms (AWS/GCP) optimized for scale, cost control, and long-term maintainability Production-grade AI/RAG systems: accurate retrieval, eval pipelines, and scalable deployment Legacy-to-cloud migrations with zero-downtime cutovers and built-in validation frameworks PROVEN IMPACT: Migrated enterprise warehouse to BigQuery: 40% lower query costs, zero downtime Built Databricks lakehouse (Delta + Unity Catalog) for governed self-service analytics Designed Snowflake + dbt architecture that cut ELT dev time by 60% Deployed RAG systems on real-world data with measurable accuracy and latency improvements HOW I WORK: Flexible engagement: I can architect your system in a focused 2-week discovery sprint, or lead full end-to-end delivery via my Vyntics team. Always production-first, cost-aware, and documented for your team's long-term success. BEST FIT FOR: Startups scaling infrastructure | Companies migrating legacy systems | Teams adding AI/RAG | Leaders who want clarity before heavy investment Evaluating your data strategy or stuck on architecture decisions? Message me with your challenge. I will reply with 2-3 actionable next steps, no obligation. Arun Mudgal Founder & Principal Consultant, Vyntics

With 8+ years of experience, I solve high-stakes AI , security & cloud challenges for a global clientele. My work architecting resilient, compliant systems in complex multi-cloud environments now forms the bedrock of my venture, A2Z SOC, where I'm productizing this proven expertise. My approach is built on a public, verifiable record of execution. ► Proven Track Record & Core Competencies: • Global GRC & Threat Defense: Architected enterprise security programs for clients in the US, Australia, & ME, ensuring audit-readiness for ISO 27001, SOC 2, NIST & more. I've successfully neutralized active DDoS attacks against crypto platforms (AUS) and defended IoT fleets with custom Snort/Suricata rulesets (Malta). • Full-Stack Cloud & IoT Architecture: Deep expertise in deploying complex solutions on AWS, GCP, & Azure. A key project involved architecting a full-stack solution for a New Zealand enterprise, integrating nRF9160 IoT devices with AWS IoT Core and a custom web application. • Product & Platform Execution: I have a proven ability to ship. My portfolio includes 5+ live web applications and a cross-platform Flutter IPTV app (iOS, Android, Web), where I handled the full lifecycle. My Top 1% Freelancer status (70+ projects, 4.8★ rating) is my public record of reliability and client success. ► Technical Proficiencies: • Security: Wazuh, Snort/Suricata, Metasploit, Nessus • Cloud/DevOps: AWS, GCP, Azure, Docker, Kubernetes • Development: React, Node.js, Flutter, SQL The Vision: A2Z SOC - Automating a Proven Service A2Z SOC is not a startup built on a hypothesis; it is the automation of a successful global service. Our foundation is already validated and built: • A live, 100+ page front-end platform. • Our free A2Z SOC Learning Center with 40+ expert modules. • A complete, multi-tenant database schema, architected for enterprise scale. Invitation to Connect ► For Founders, CTOs, & Enterprises: I provide strategic consulting for your most critical challenges in multi-cloud security, GRC automation, and complex application architecture. ► For Investors & Venture Partners: A2Z SOC is a de-risked investment opportunity backed by verifiable global traction. I invite you to connect for an investor briefing.

I work on genomics and biology projects, the kind where you have raw sequencing data, mass spec output, or protein sequences and you need someone to turn it into results you can publish or act on. I've done this across more than 67 projects on Upwork and through my PhD and postdoc, so I know what a clean analysis looks like and I know the shortcuts that cause problems later. Quick background: Actually postdoc in population genetics. PhD in bioinformatics and molecular evolution at Paris-Saclay (CNRS), where I worked on plant-bacteria interactions. Master's in bioinformatics from Sorbonne, and bachelor's in computer science from Descartes. I've been programming for over 10 years, mostly Python, R, and Bash, though I can work in Java, C, or JavaScript if a project calls for it. Eight years of building data pipelines specifically. What I do: Genomics and population genetics. GWAS, co-GWAS (PLINK2, Firth regression), population structure analysis (PCA, ADMIXTURE, pairwise FST), ancient DNA work (qpAdm, qpWave, ADMIXTOOLS2), variant calling and annotation. I've run these on human, plant, pathogen, and ancient samples. Genome assembly and annotation: De novo assembly from Nanopore or Illumina, gene prediction, functional annotation, genome comparison. Bacteria, plants, insects, human. I've assembled all of them at some point. RNA-seq: Differential expression from raw reads, co-expression networks, pathway enrichment. Full pipeline or just the analysis part, depending on what you need. Structural bioinformatics: AlphaFold2 batch runs, FoldSeek for structural comparisons, molecular docking with ClusPro, AutoDock Vina, or HADDOCK. I do the visualization too (PyMOL, ChimeraX), and create publication-ready figures, not just screenshots. Phylogenetics and molecular evolution: IQ-TREE2, RAxML, selection tests, gene family evolution, protein evolution. Proteomics and lipidomics: Mass spec data processing through to statistical analysis and biological interpretation. Pipelines: I build workflows, documented and tested with example data. Your team should be able to rerun them without me. Writing and code review: Methods sections, technical reports, manuscript figures. I also debug and review existing pipelines. If your code or script doesn't work, I'll fix it and tell you why it broke. Everything comes with commented code and R Markdown or Jupyter reports. Figures are made in ggplot2 or matplotlib and ready for submission. 100% Job Success score across 65+ projects. I reply the same day. "If you need a bioinformatics expert who's not only insanely skilled but also great to work with, Dr. Amira is the one. Would 100% work with her again!" (Client) "Amira delivered a thorough and well-structured technical review, including worked examples and code snippets that were very useful for demonstrating enablement. Her analysis was detailed, thoughtful, and delivered on time. I highly recommend her for bioinformatics and technical review projects." (Recent client) Drop me a message with your data and what you're trying to do. I'll get back to you with a plan and timeline.

"I’ve worked with hundreds of freelancers over the last 10+ years, and Alexandra is truly one of the standouts." - This is what clients say about me Hey, I'm Aleksandra 👋 I help both early-stage and growth-stage companies turn product and marketing data into actionable business insights. Over the years, I've developed my own methods, frameworks and templates using best practices, which means I can take on multiple clients without compromising on quality or speed, and you get senior-level work at a fraction of the usual turnaround time. Slow response times is one of the biggest frustrations clients come to me with, and I've automated my workflow specifically to fix that. My clients stop flying blind on paid acquisition and user behavior. After working with me, they have dashboards they actually use, funnels that surface real drop-off, and a clear picture of what's driving or killing revenue. I'm the right fit for you if you... • Need an audit of your current analytics implementation • Want to turn messy data into clear decisions • Would like to implement an analytics tool but don't know where to start • Have set up analytics but don't know how to use it effectively • Want assistance in creating dashboards, reports, charts or funnels • Need to understand drop-off rates and churn • Would like to set up experiments or A/B testing • Need to understand the performance of Google / Meta / TikTok / Reddit Ads • Need someone to provide training or workshops for your internal team With 70+ completed projects and $300K+ earned on Upwork, I bring both the technical depth and business context to make analytics actually useful. Tools I work with: • PostHog • Amplitude • Mixpanel • Google Analytics • Segment • Lovable • RevenueCat • Adapty • AppsFlyer • CustomerIO • Klaviyo • Claude Code • n8n • Make To start working together simply invite me for an interview or book a consultation and let's discuss your project. View my portfolio and positive client reviews below 👇

Most data pipelines don’t fail because of code. They fail because they weren't built for scale. With 8+ years of experience engineering data systems at companies like Microsoft and Coreweave, I help businesses move away from "brittle prototypes" to production-grade, scalable infrastructure. I don’t just move data; I build the "Source of Truth" that leadership and AI systems actually trust. 💬What I Solve for You: Productionizing AI Pipelines: Hardening Python prototypes into scalable RAG and LLM infrastructures (AWS/Azure). ➔Infrastructure-as-Code: Building automated, modular ETL/ELT pipelines that don't require daily manual fixes. ➔The "One-Source" Dashboard: Integrating messy data from APIs, SaaS (Shopify, HubSpot), and DBs into clean Snowflake/BigQuery layers. ➔Performance Recovery: Optimizing slow SQL queries and high-cost cloud warehouses to save you thousands in monthly spend. 🛠 Tech Stack: Languages: Python (FastAPI, Pandas, PySpark), SQL Cloud & Warehousing: AWS (Glue, Lambda, S3), Snowflake, BigQuery, Azure Orchestration: Airflow, dbt, GitHub Actions Data Ops: API Integrations, Vector DBs, Data Validation ✅ Why Me? 8+ Years Experience: I’ve seen what breaks at the enterprise level and how to prevent it in your startup. Speed over Perfection: I focus on shipping high-impact systems that drive revenue, not just technical documentation. Transparent Communication: You get regular updates and a partner who challenges requirements to find better solutions. Ready to clean up your data debt? 📩 Message me for a FREE 15-minute technical consultation. Let’s discuss your architecture and see if I’m the right fit for your system.