Hire the Best Sitecore Developers
in Poland

- Over 12 years of software development experience in various-sized projects; - Strong experience in designing and developing OOP solutions using .NET platform; - Solid experience in Sitecore CMS v6.5 - 9 - Great experience in business domain and functional requirements analysis, building appropriate architectural solutions; - Strong experience in web-client technologies such as HTML, XML, JS, CSS; - Good experience in system integration with .NET based Web Services; - Experience in “spaghetti” code refactoring and business logic performance optimization; - Experience in existing software support and maintenance; - Technology domination was achieved in ASP.NET, Sitecore, ASP.NET MVC, MSSQL Server.

I secure, scale and stabilize AWS infrastructure for SaaS and AI teams | 7+ yrs | I own delivery end to end, minimal management overhead | 12x faster provisioning, 100+ CI/CD pipelines, migrations under 5 min downtime I’m the Founder and DevOps Delivery Lead at EvolutionScale, with 7+ years of hands-on experience across AWS infrastructure, automation and production operations. You get a clear action plan, quick wins in the first days, and production-safe improvements shipped via AWS Terraform, CI/CD, ci cd pipelines, rollback-ready delivery, and practical DevOps Engineer execution using AWS Kubernetes, Microsoft Azure, azure data factory and Google Cloud Platform. What you get from a cloud infrastructure optimization engagement: ✅ 12x faster infrastructure provisioning, reduced from 4 hours to 20 minutes ✅ 5x faster deployments, reduced from 40 minutes to 8 minutes ✅ 100+ automated CI/CD pipelines with quality and security gates ✅ 80% less routine DevOps dependency through reusable self-service templates ✅ Up to 40% lower AWS costs with zero customer-facing production impact ✅ Near-zero mis-releases through automated environment routing and deployment controls ✅ AWS migrations with under 5 minutes of production downtime ✅ Secure, scalable infrastructure with tenant isolation, access controls, monitoring and backups ✅ Better production reliability through observability, health checks, rollback plans and disaster recovery procedures ⚙️ How I work as an AWS DevOps Engineer: 1️⃣ Discovery & Assessment: analyze your current Amazon Web Services, Linux servers, backend, kubernetes, AWS ECS, AWS Lambda, AWS EKS, Amazon EKS, GitLab, GitHub Actions, AWS Terraform, AWS Kubernetes, and deployment pain points 2️⃣ Plan: define clear scope, milestones, risks, and the fastest first win across your infrastructure 3️⃣ Implement: build and automate with AWS DevOps Engineer best practices, DevOps Engineer delivery standards, cloud engineer ownership, and clean documentation 4️⃣ Verify + handover: release runbook, rollback path tested, monitoring validated, and short documentation for your team I mainly work with AWS, but I can also support mixed-cloud teams where Microsoft Azure pipelines, Azure Terraform, Azure Cloud Engineer workflows, Azure infrastructure, Google Cloud Platform, AWS VMware, or migration planning are part of the environment. My expertise covers devops kubernetes integrating AWS Terraform and AWS Kubernetes into multi-cloud setups. Real examples: 🔹 Case: AWS Production-Safe Cost Optimization ⚠️ Problem: Multiple AWS environments across production, staging, pre-production and development were running 24/7, with several oversized resources. 🛠️ Work: Reviewed AWS usage, rightsized resources, added safe Spot Instances, automated start/stop scheduling and improved cost visibility. 🎯 Result: Reduced AWS infrastructure spend by ~40% with zero customer-facing production impact. 🔹 Case: CI/CD for AWS Lambda & Product Engineering Teams ⚠️ Problem: Teams had no standard way to deploy AWS Lambda services. Each service was configured differently and required DevOps involvement. 🛠️ Work: Built 30+ AWS Lambda CI/CD pipelines for Python and Node.js with tests, SonarCloud checks and Orca Security gates. 🎯 Result: Developers could self-provision new Lambda services from a template in under 5 minutes, reducing DevOps dependency by ~80%. 🔹 Case: AWS Multi-Account Infrastructure with Terraform ⚠️ Problem: Product teams needed isolated non-prod, pre-prod and production environments, but provisioning took ~4 hours manually. 🛠️ Work: Built reusable Terraform modules across multiple AWS accounts and standardized environment provisioning with templates. 🎯 Result: Environment provisioning dropped from ~4 hours to ~20 minutes, helping teams ship and test faster. 🔹 Case: Feature-Branch Environments for Next.js / Node.js ⚠️ Problem: Developers shared one staging environment, causing conflicts and slower review cycles. 🛠️ Work: Built GitLab CI + Terraform automation to create isolated AWS Elastic Beanstalk environments per merge request. 🎯 Result: PR-based environments launched in ~10 minutes, removing staging conflicts and improving feedback loops by ~50%. Additional product infrastructure supported: AWS ECS, EKS, Lambda, Terraform, GitHub Actions, GitLab CI, Azure DevOps, Docker, AWS ECR, CloudFront, S3, RDS, Redshift, Dagster Cloud Hybrid Best fit for teams that need senior DevOps support for a launch, migration, infrastructure stabilization, AWS backend improvement, backend AWS architecture, or ongoing production ownership. I can support your team as an AWS DevOps Engineer, devops engineer, cloud engineer, aws architect, and senior delivery owner across Amazon Web Services, kubernetes, ci/cd, github actions, gitlab, Git, AWS Terraform, AWS Kubernetes, Azure DevOps, GCP DevOps, and terraform-based infrastructure. ☎️ Message me a short description of your current pain for fast Senior AWS DevOps Engineer support.

I am a highly skilled C#.NET Azure Umbraco developer with 19 years of experience. Microsoft certified. AI-native (Claude Code). Deliver custom or CMS-driven websites and web apps with scalable backend and pixel-perfect markup. Require minimal supervision, easily understand business requirements, and possess a problem-solving, product-oriented mindset. Over my career, I've completed 110+ projects for SMEs. Key Technologies: - ASP.NET MVC and ASP.NET Core - Databases: MSSQL, PostgreSQL - Frontend: JavaScript, TypeScript, React, AngularJS, Tailwind CSS, Sass/Scss, Bootstrap - Azure (Microsoft Certified): Azure DevOps, Azure Compute, Azure Web Apps, Azure SQL, Functions, Containers - AI-assisted development with Claude Code - Umbraco CMS - Desktop: WPF My Services: - AI-assisted custom web app development - Payment gateways integration: Stripe, PayPal API, Authorize.NET - Full cycle business website development and setup with Umbraco CMS - Umbraco CMS upgrade and migration - CRM, ERP, Social media website integration - Email and SMS sender integration: SendGrid, Twilio, Mailchimp - Website or web app migration to Azure cloud - Website infrastructure support and maintenance - Website performance optimization - CI/CD (Git, Azure DevOps, Github, TeamCity) setup

⭐⭐⭐⭐⭐ "If there is a 10-star rating, I would rate him 10 stars! Abraham is the best. Keep up the extremely good work!" If you want a business partner to help bring your vision to life, while feeling like an old friend has your back, then I am exactly what you are looking for. Over my very diverse career, both freelancing as a Top Rated freelancer on Upwork and working around the world, I've helped develop, maintain, and improve web and mobile apps for all sorts of clients. My most well known clients/projects/jobs include: ➡️ Dream 11 App (Official ICC Partner with 2M+ users) ➡️ DirecTV App for AT&T (Fortune 500 Company) ➡️ Bayer (Fortune 500 Company) ➡️ Like Digital & Partners (Award Winning Luxury Web Design Company) If you need a high-performance, user-friendly app or need a website that leaves your clients breathless, then I am able to assist you throughout the whole process: from creating design mock-ups, to choosing the best hosting solutions. Though I specialize in creating mobile apps and websites, I am more than capable of working with servers and APIs. Over the years, I have developed a reputation for being excellent in initiative and self-management. My projects would usually put me in a position of mentorship, or greater responsibility. You won't need to worry about my progress with a task, as I prioritize clear and transparent communication with my clients. So what can you expect by having me in your project? 🏆 The best and latest programming standards in the industry 🚀 Rapid delivery of results 🤝 A "team player" mentality 😃 Passion and energy 🌟 Excellence and satisfaction every time In summary, if you need someone you can rely on to get something done right, or you want someone to help you build your dream and be with you every step of the way, then you needn't look further. If there is one thing I love doing above all else, it's exceeding your expectations. ✅ Shall we discuss your project?

As a seasoned Software Engineer with 8+ years of experience, I specialize in designing and developing a wide array of mobile applications, websites, and web applications for diverse clients. My passion lies in leveraging cutting-edge technology to tackle complex challenges and deliver outstanding results. With a keen eye for detail, I am dedicated to creating seamless user experiences and ensuring the success of every project I undertake. I am a proactive problem-solver with a proven history of meeting tight deadlines and exceeding client expectations. My expertise includes advanced skills in HTML, SCSS, ES6, jQuery, React, C#, MySQL, MSSQL, .NET Core, PL/SQL, T4, Docker, Azure, and more.

Hello, Im a developer with 15 years of working experience. I have been working for companies from Russia, USA, Canada, Australia, Philippines. Have created applications for desktop, mobile and web. Main specialization - .NET stack (WPF, ASP.NET, Avalonia, MAUI), but also have experience in other areas. Have bachelor degree in applied math and computer science. Have rich expirience of using Selenium for automatization work with websites or data crawling. Main skills: Back-end: Asp.Net MVC, basic knowledge of NodeJS. Desktop: WPF, Avalonia. Mobile: MAUI, Xamarin. Front-end: Angular, Typescript, JQuery, AngularJS, Bootstrap, Chrome extensions Testing: Selenium, NUnit, Moq Infrastructure: Teamcity, Octopus, Azure Devops, gRPC, Git, SVN, JIRA Have worked with different DB: mostly MS SQL, but also MySQL, SQLite, Postgres. Have experience using ORM (EF Core, NHibernate) and directly accessing DB (Dapper). Could work both in team and as a separate developer. I have good learning ability - if I don't know something, usually it doesn't take much time to understand it. I have good skills in understanding code written by other developers, know how to write unit tests. I'm working with AI-tools: Claude code, Gemini, QWEN code.