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If your website is critical to your business, security and stability aren’t optional - they’re infrastructure. I work with companies that rely on WordPress and WooCommerce in production environments, where downtime, attacks, or misconfigurations directly impact revenue. With over 10 years of experience in WordPress, Cloudflare, and Linux server environments, I typically get involved in situations where things need to be handled properly - not patched temporarily. What I focus on: • Advanced malware remediation and full-site recovery • Cloudflare architecture, WAF tuning, and traffic control • Bot mitigation and DDoS protection at scale • Linux server hardening and performance tuning (Nginx, Apache, MySQL) • Stabilizing high-traffic WooCommerce environments • Full-stack performance + security alignment I approach every project from both sides - application and infrastructure. That means understanding how WordPress behaves under load, how traffic is filtered at the edge (Cloudflare), and how the server handles what gets through. This is where most setups fail, and where I usually step in. I’m a Top Rated Plus freelancer on Upwork with a 100% Job Success score, and I’ve worked with 150+ clients across hundreds of production websites, many of them long-term. I don’t rely on generic solutions or one-size-fits-all setups. Every system is different, and I take the time to understand what’s actually happening before making changes. If you’re looking for someone who can take ownership of security and stability, not just fix isolated issues - we’ll likely be a good fit. ✔ Fast response (usually within a few hours) ✔ Available for urgent fixes (including hacked or down sites) ✔ Careful work on live environments (no unnecessary downtime) ✔ Root-cause fixes, not temporary patches

Are you looking for a Senior Developer who can build, optimize, and scale your entire digital ecosystem using a unified, type-safe TypeScript stack? With over 10 years of experience, I specialize in building enterprise-grade applications and high-performance SaaS platforms. By leveraging Angular, NestJS, and Next.js, I bridge the gap between complex business logic, rock-solid backend architecture, and blazing-fast user interfaces. Whether you need to migrate a legacy system, set up an Nx Monorepo, or build a scalable product from scratch, I deliver clean, maintainable, and production-ready code. 🚀 HOW I HELP MY CLIENTS SUCCEED: 1. Enterprise Frontends (Angular): Building highly structured, scalable apps using modern Angular patterns (Signals, RxJS, Standalone Components, and advanced routing guards like canMatch). 2. SEO & Consumer-Facing Apps (Next.js): Developing lightning-fast corporate websites, e-commerce stores, and SaaS frontends utilizing App Router, Server Components, Server Actions, and SSR for maximum performance and SEO. 3. Robust API & Microservices (NestJS): Designing secure, modular RESTful or GraphQL APIs with NestJS, utilizing dependency injection, strict DTO validation, and seamless database integration (PostgreSQL, MongoDB, Prisma, TypeORM). 🛠️ TECH STACK SUMMARY: • Frontend: Angular (v14-v18+), Next.js (App Router), React, TypeScript. • Backend: NestJS, Node.js, Express, RESTful APIs, GraphQL, WebSockets • Databases & Cloud: PostgreSQL, MongoDB, Supabase, MySQL, AWS, Docker • Architecture: Nx Monorepos, Shared DTOs, Microservices, Clean Code Patterns 💼 REAL-WORLD EXAMPLES OF MY WORK: • Architected an enterprise dashboard in Angular, migrating it to Standalone Components and improving performance by 40%. • Built a scalable multi-tenant SaaS API using NestJS and PostgreSQL, handling secure authentication and complex data relations. • Developed an SEO-optimized web application using Next.js with Server-Side Rendering (SSR), reducing initial page load times to under 1.2 seconds. I don't just write code; I think like a product owner. I focus on clean state management, minimizing bundle sizes, and ensuring your project remains scalable for years to come. Let’s hop on a brief discovery call to discuss your project requirements and technical challenges.

I architected a cloud transformation for a major fintech platform that slashed infrastructure costs by 50% in just four months. By redesigning Amazon Web Services clusters with Kubernetes, optimizing Amazon S3 storage classes, and rightsizing Amazon EC2 instances, I turned a bleeding budget into a streamlined operation. I focus on DevOps Engineering and Solution Architecture that aligns technical performance with business profitability, ensuring your infrastructure is not just a cost center, but a growth engine. My approach to DevOps goes beyond basic maintenance; I build self-healing, automated ecosystems. I have engineered scalable Helm-based delivery pipelines for 150+ microservices and executed a zero-downtime migration for an AI-based hiring platform. To support enterprise-grade operations, I led a Salesforce App Development initiative, utilizing Apex and API Integration to sync a Salesforce CRM with external ERP Software. This automation streamlined Accounts Payable and General Ledger reporting, eliminating data silos between engineering and finance. I also implemented Deployment Automation using Terraform and Git, establishing a single source of truth for infrastructure. I possess deep technical fluency across Cloud Engineering and Linux System Administration, managing complex environments on Microsoft Azure and Docker. I have recently architected high-concurrency microservices using Golang and API gateways to handle massive traffic spikes. Whether you need to optimize Customer Relationship Management data flows or harden your CI/CD pipelines, I deliver resilient systems. Let’s discuss how I can architect a solution that scales with your ambition.

DevOps Engineer | Full-stack Developer | Cloud Architect | Shopify E-commerce Expert Greetings! I am an experienced and versatile DevOps professional, deeply immersed in the world of technology. With a strong foundation in development and a passion for turning visions into tangible solutions, I specialize in orchestrating seamless workflows, optimizing cloud infrastructures, and fostering a DevOps culture. I'm also developing and designing creative, responsive and SEO-optimized WordPress websites and E-commerce stores using Shopify. Another part of my experience is providing creative graphic design solutions for branding, print design, advertisements, and social media.

I help businesses eliminate manual, repetitive processes by building AI-powered automation systems — from document extraction pipelines to intelligent search and end-to-end workflow orchestration on AWS. What I actually build: Document Processing at Scale I designed and built an automated pipeline that processes 20,000+ auction catalog PDFs — extracting structured data, identifying lot numbers, and handling group photo detection using Gemini vision models. The system runs on AWS Step Functions with dynamic per-catalog prompt calibration, reducing what would take a team weeks of manual work to hours of automated processing. AI Transformation & Workflow Automation I'm currently leading AI transformation for an organizational consulting firm — identifying manual bottlenecks, designing automation workflows, and implementing AI-assisted tools that integrate into existing team processes. This includes n8n-based email summarization workflows and AI-powered internal documentation systems. RAG & Intelligent Search I build retrieval-augmented generation systems that let teams search and query their own documents and data using natural language. My implementations use pgvector, OpenAI/Claude/Gemini APIs, and are designed for accuracy and cost-efficiency — not just demos, but production systems. My stack: React, TypeScript, Node.js, Python, AWS (CDK, Lambda, Step Functions, Fargate), OpenAI API, Claude API, Gemini API, pgvector, n8n, D3.js How I work: I scope clearly, communicate directly, and deliver working systems — not slide decks. I come from a background in sociology and organizational analysis, which means I don't just build the technical solution; I understand the human process it needs to fit into. If you have documents piling up, processes that depend on copy-paste, or teams drowning in repetitive tasks — let's talk.

👋 Hi there! I'm Aleksa Toljic, a seasoned software engineer with a passion for crafting impactful digital experiences. With experience across various technologies and industries, I thrive on tackling complex challenges and delivering innovative solutions. 🚀 Throughout my career, I've had the privilege of working on a wide array of projects, from Proof of Concepts leveraging blockchain technology to leading teams in the development of cutting-edge web applications. I've contributed to the transformation of companies, guiding them through significant transitions and playing key roles in their evolution. 🛠️ My technical expertise includes proficiency in React, Typescript, SCSS, Webpack, Jest, and Storybook. I'm well-versed in modern development practices like CI/CD, testing automation, and agile methodologies. 🌟 One of my proudest accomplishments has been my involvement in maintaining and expanding UI toolkits and component libraries, ensuring consistency, accessibility, and usability across various projects. I've also played a pivotal role in leading internship programs, nurturing talent, and fostering a culture of growth and collaboration. 🔍 Currently, I'm exploring new opportunities where I can continue to leverage my skills and expertise to drive impactful outcomes and contribute to the success of innovative teams and projects. If you're passionate about technology, collaboration, and making a difference, let's connect!