Šime Galac - Software Engineer

Šime Galac

Software Engineer - Automation & Integrations

📞 +385 91 722 7206 📧 [email protected] 🔗 LinkedIn Location: Zadar, Croatia

🎖️ Azure Solutions Architect Expert 🎖️ Azure Cosmos DB Developer Specialty

5 years of building systems that automate business processes and orchestrate dozens of integrations with external services - from WhatsApp channels to CRMs, marketing platforms, and Azure AI APIs.

5+years of experience

10+external integrations

2Microsoft certifications

AI for delivery automation: AI tools are actively used to accelerate prototyping, code generation, refactoring, and integration diagnostics while keeping architecture and quality decisions firmly engineering-led.

What I Do

⚙️

Automation & Workflow

Built an internal framework for defining business flows with triggers, conditions, and actions. Audit trail, idempotency, and reliable execution are built in.

Workflow Framework State Machine Audit Trail

🔌

Integrations

Modular integrations with Google APIs, Meta, Salesforce, Azure AI, and Seats.io - OAuth2, retry strategies, and circuit breaker patterns.

REST API OAuth2 10+ connectors

☁️

Azure Ecosystem

Azure Solutions Architect Expert in practice - Cognitive Services, Cosmos DB, Functions, and Blob Storage used in production projects.

Azure Cognitive Services Cosmos DB Blob Storage

🏗️

Backend & Architecture

C# / .NET, Clean Architecture, MS SQL Server. Structured logging and code review are standards, not exceptions.

C# / .NET MS SQL Server Clean Architecture

Projects

WhatsApp Business Process Automation Platform

Users communicate through WhatsApp while the backend orchestrates the full business process - from first contact, through sales, to active product use.

2024 - present

Integration Connectors - Google, Meta, Salesforce, Azure AI

Modular connector library with OAuth2, automatic token refresh, and circuit breaker logic; Google Drive API, Marketing APIs, and Salesforce REST.

2021 - present

ticket4you.hr - Integration Architecture

External integration layer for a live ticketing platform - Google services, Seats.io real-time reservations, and Azure Blob Storage.

2025 - present

Lead Tracking Platform

System integrated with the client website that drives each lead from first contact to conversion through automated communication and Google Drive documents.

2021 - 2023

Technologies

Backend

C# / .NET TypeScript REST API Design Clean Architecture Authentication & Authorization

Automation

Workflow Framework WhatsApp Business API State Machine Idempotency & Retries

Integrations

Google APIs Google Drive API Meta Marketing API Salesforce REST API Seats.io OAuth2

Cloud / Data

Azure (Architect Expert) Azure Cognitive Services Azure Cosmos DB Azure Blob Storage MS SQL Server PowerShell Git / CI/CD

Why I'm the Right Fit

Problem solving is a standout strength - root causes in multi-system workflows are quickly isolated and complex issues converted into precise, quality-first solutions. Delivery speed matters, but correctness always comes first.
Integrations and automation are everyday engineering - 5 years of building systems that orchestrate business flows across dozens of external services, with modular connectors and audit trail as a standard.
Workflow framework with production experience - internal framework for defining automated workflows built from scratch, with deep understanding of tradeoffs between generic flexibility and long-term maintainability.
Azure ecosystem in real projects - both certifications backed by hands-on use of Azure services in production (Cognitive Services, Cosmos DB, Functions, Blob Storage).

Šime Galac

Software Engineer - Automation & Integrations

📞 +385 91 722 7206 📧 [email protected] 🔗 LinkedIn

🎖️ Microsoft Certified: Azure Solutions Architect Expert 🎖️ Microsoft Certified: Azure Cosmos DB Developer Specialty

Professional Summary

Engineering practice focused on business process automation and integrations - building systems that orchestrate complex flows across external services with strong reliability, clean architecture, and operational visibility.
Problem solving is a standout strength - especially in integration-heavy systems where precise, quality-first fixes directly impact long-term reliability, not just delivery speed.
Primary stack: C# / .NET, REST API design, MS SQL Server, Azure Cosmos DB; production experience with Google APIs, Meta, Salesforce, Azure Cognitive Services, and Seats.io.
Azure Solutions Architect Expert and Azure Cosmos DB Developer Specialty certifications - architectural decisions made with clear tradeoff awareness across scalability, cost, and operational complexity. Hands-on production use of Azure Cognitive Services, Azure Functions, Cosmos DB, and Blob Storage.
I believe business process automation is one of the core segments of modern software development - and I bring that conviction to every project from day one.

AI-assisted engineering workflow: Daily use of AI tools for faster development automation, faster iteration loops, and cleaner delivery handoffs.

Core Competencies

Automation & Workflow Orchestration

WhatsApp Business API Workflow Framework (custom) Trigger-Action-Status Engine State Machine Condition Resolver Idempotency & Retries Audit Trail

Integrations

Google Marketing APIs Google Drive API Meta Marketing API Salesforce API Azure AI / Cognitive Services Seats.io API REST API OAuth2 / Token Management Webhooks

Backend

C# / .NET REST API Design TypeScript Authentication & Authorization Error Handling & Resilience Structured Logging Rate Limiting Clean Architecture

Cloud / DevOps

Azure (Architect Expert) Azure Cognitive Services Azure Functions Azure Blob Storage Git / CI/CD Azure DevOps Monitoring & Observability Secrets Management PowerShell

Data

MS SQL Server Azure Cosmos DB Structured Event Log

Quality & Frontend

Code Review Mock Services Integration Flow Debugging Angular

Work Experience

Software Engineer 2020 - present · Zadar, Croatia

Telum Marketing

Development and maintenance of a business process automation system where users interact through WhatsApp while the backend orchestrates dozens of integrations with external services - CRMs, marketing platforms, and AI services - transparently for end users.
Internal framework built for defining and executing automated workflows: each business flow is modeled as a composition of configurable steps with triggers, conditions, and actions - significantly reducing implementation time for new processes without changing core logic.
Integration layer designed for external systems (Google APIs, Meta, Salesforce, Azure AI) with OAuth2 authentication, automatic token refresh, and retry strategies; each connector is isolated as a replaceable component.
Primary work with MS SQL Server for structured business data and Azure Cosmos DB for high-traffic scenarios requiring distributed consistency.
Contribution to integration standards, logging strategy, and code review practices; Azure DevOps processes and Git workflows for team delivery.

Selected Projects

WhatsApp Business Process Automation Platform Telum Marketing · 2024 - present

Platform where users interact through WhatsApp while the backend drives the full business process - from first contact, through sales, to active product use - without manual intervention; key architecture parts built and most integrations implemented.
Internal workflow framework that models business flows as compositions of steps with triggers, conditions, and actions - new processes added through configuration instead of core logic changes.
Every flow step is recorded in a structured audit log with execution context - enabling precise debugging, change tracking, and analysis of real user behavior patterns.
Stack: C# / .NET, WhatsApp Business API, MS SQL Server, Azure Cosmos DB, Azure Cognitive Services, REST API.

Integration Connectors - Google, Meta, Salesforce, Azure AI Telum Marketing · 2021 - present

Set of modular connectors implemented for external systems: Google Marketing APIs, Google Drive API, Meta Marketing API, Salesforce, and Azure AI / Cognitive Services - each connector isolated behind a shared interface for easier replacement and testing.
Each connector supports OAuth2 flows with automatic token refresh, exponential retry with jitter, and circuit breaker patterns - integration reliability does not depend on upstream stability.
Sensitive configuration and API keys are injected through configuration layers; secrets management aligned with common cloud security practices.
Stack: C# / .NET, OAuth2, Google API client libraries, Google Drive API, Salesforce REST API, Azure Cognitive Services SDK.

ticket4you.hr - Ticketing Platform Integration Architecture Telum Marketing · 2025 - present

External integration layer built for the production ticketing platform ticket4you.hr - Google services (authentication, analytics), Seats.io for real-time seat selection and capacity reservation, and Azure Blob Storage for media assets.
Main challenge was state consistency across the ticketing engine, payment system, and external APIs - resolved through transaction management and idempotency logic at every integration step.
Stack: C# / .NET, Seats.io API, Google APIs, Azure Blob Storage, REST API.

Lead Tracking Platform - From Acquisition to Sales Close Telum Marketing · 2021 - 2023

System integrated with the client website via webhooks or lightweight snippets - visitors who express interest automatically enter a structured sales flow without manual input or client-side process changes.
Each lead is tracked across the full lifecycle: initial contact, automated communication and sales team notifications, status transitions, and final conversion.
Google Drive API integration enables automatic generation and storage of lead-related documents directly into the client's Drive.
Stack: C# / .NET, REST API, MS SQL Server, Google Drive API, webhook integrations.

Certifications

Microsoft Certified: Azure Solutions Architect Expert

Azure architecture design, high availability, scalability, security, networking, monitoring, and cost optimization.

Microsoft Certified: Azure Cosmos DB Developer Specialty

Design and implementation of distributed data solutions - partitioning, consistency models, global distribution, and performance optimization.

Education

University Department of Professional Studies - Split
Major: Information Technology (IT) · Bacc. ing. techn. inf.
2016 – 2020

Tools & Technologies

C# / .NET WhatsApp Business API Workflow Framework (custom) Azure (Architect Expert) Azure AI / Cognitive Services Azure Functions Azure Blob Storage Google Marketing APIs Google Drive API Meta Marketing API Salesforce REST API Seats.io API MS SQL Server Azure Cosmos DB REST API OAuth2 TypeScript PowerShell Git CI/CD Azure DevOps Angular Java (familiar) Clean Architecture Mock Services

Languages

Croatian - native | English - C1 (Advanced)

Why I'm the Right Fit

Problem solving as a core strength: Strong track record of debugging and stabilizing complex multi-system flows with practical, maintainable solutions - quality always comes before speed of delivery.
Integrations and automation as day-to-day engineering: Multi-year experience building systems that orchestrate processes across dozens of external services - with modular connectors, retry strategies, and audit trails as standard architecture components.
Workflow framework with production usage: Internal framework for defining and executing automated workflows, built with practical understanding of tradeoffs between generic flexibility and long-term maintainability.
Azure ecosystem in practice: Azure Solutions Architect Expert and Azure Cosmos DB Developer Specialty certifications supported by real production usage (Cognitive Services, Cosmos DB, Functions, Blob Storage).
Multi-layer environments and debugging: Hands-on experience tracking and diagnosing failures in flows that cross multiple systems, with clear layer ownership and observability.