HRISTIJAN
MIJALKOV

Full-stack Engineer & Data Scientist

About

Who I am

Full-stack engineer and data scientist with 5+ years of production experience in fintech, e-commerce, and ML — shipping a live banking platform, enterprise forecasting models, and distributed data pipelines for clients across Europe, alongside freelance web development and volunteer disaster-relief tooling on the side.

At Vista Point I engineer a multi-tenant banking and e-commerce SaaS platform with microservices architecture: Angular frontends, NestJS REST APIs, and MySQL/Redis backends handling KYC onboarding, cross-border wire transfers, and FX trading under compliance constraints. At Xient GmbH I build classification, regression, and time-series forecasting models alongside PySpark ETL pipelines (Lambda architecture: batch + streaming) within the SAP × Hypatos document-intelligence ecosystem, turning multi-source enterprise data into decision-ready forecasts.

Experienced designing Microservices, Multi-Tenant SaaS, Event-Driven, and Lambda architectures. Proven across Angular, Node.js, Go, FastAPI, Flask, Python, PySpark, AWS, SQL, and NoSQL. Drawn to fintech, fraud detection, and the intersection of data engineering and applied security.

Cert.

AWS AI Practitioner

English

C1 · German A2

Based

North Macedonia

AngularNestJSTypeScriptPythonPySparkApache SparkApache FlinkKafkascikit-learnDeep LearningDockerKubernetesAWSCI/CDMySQLRedisREST APIsNode.jsPostgreSQLMongoDBC/C++JavaLinuxMLOpsData MiningETLBioinformaticsStatisticsAngularNestJSTypeScriptPythonPySparkApache SparkApache FlinkKafkascikit-learnDeep LearningDockerKubernetesAWSCI/CDMySQLRedisREST APIsNode.jsPostgreSQLMongoDBC/C++JavaLinuxMLOpsData MiningETLBioinformaticsStatistics
AngularNestJSTypeScriptPythonPySparkApache SparkApache FlinkKafkascikit-learnDeep LearningDockerKubernetesAWSCI/CDMySQLRedisREST APIsNode.jsPostgreSQLMongoDBC/C++JavaLinuxMLOpsData MiningETLBioinformaticsStatisticsAngularNestJSTypeScriptPythonPySparkApache SparkApache FlinkKafkascikit-learnDeep LearningDockerKubernetesAWSCI/CDMySQLRedisREST APIsNode.jsPostgreSQLMongoDBC/C++JavaLinuxMLOpsData MiningETLBioinformaticsStatistics

Experience

Where I've worked

Vista Point

Senior Full-stack Developer

North Macedonia

May 2022 – Present
  • Engineered a multi-tenant banking and e-commerce SaaS platform with microservices architecture (Angular, Node.js, MySQL, Redis, Java, C#, HTML, CSS, JavaScript) handling KYC onboarding, cross-border wire transfers, and FX trading.
  • Cut feature delivery time ~40% by refactoring a monolithic Angular codebase into a reusable component library, eliminating duplicated logic across KYC, wire-transfer, and FX trade screens.
  • Secured REST API endpoints covering compliance-sensitive operations - identity verification, fund transfers, and role management - by implementing JWT auth and refresh-token rotation.
  • Reduced high-traffic endpoint response times ~35% by introducing Redis read-through caching and rewriting inefficient MySQL queries, improving throughput under peak transaction load.
AngularNode.jsMySQLRedisJWTDockerJavaC#HTMLCSSJavaScript

Xient GmbH

Backend Engineer

Germany (Remote)

Jun 2024 – Present
  • Shipped a Microsoft Teams tab application (FastAPI, Python) embedding a BW/4HANA KPI dashboard as both a personal and channel tab, surfacing real-time business intelligence data directly within Teams.
  • Delivered a full-stack documentation PDF export tool (Go, React, Next.js, Python, Playwright) with BFS site crawling, per-section ZIP packaging, and SSE-streamed generation progress.
  • Wired an on-premise SAP S/4HANA + BW system to a locally-hosted LLM (Ollama on Nvidia DGX Spark) via RFC/BAPI and OData; built Python extraction pipelines enabling zero-cloud AI-powered data analysis.
FastAPIPythonGoAWSReactNext.jsPlaywrightSAPOllama

Support Kocani

Volunteer Developer

North Macedonia

Mar 2025 – Apr 2025
  • Designed and shipped supportkocani.com (PHP/Laravel, AWS) within 72 hours of the Kocani disco fire, enabling real-time donation tracking for hundreds of affected families.
  • Integrated OpenAI Vision API to automatically parse wire-transfer and cheque screenshots, eliminating ~4 hours of daily manual donation tallying and accelerating fund distribution to injured victims.
PHPLaravelAWSOpenAI APIPython

Freelance

Full-stack Developer & Tutor

North Macedonia

Dec 2021 – Present
  • Delivered 2 production websites end-to-end (solar energy provider, PVC construction company) covering requirements, UI/UX, full-stack development (HTML, CSS, JavaScript, PHP), and deployment, enabling clients with no prior web presence to generate online leads.
  • Taught web development (Angular, Node.js, HTML/CSS/JS) and data science (Python, Pandas, SQL, ML, Deep Learning, LLMs, RAG systems) across 1-on-1 and small-group sessions, adapting curriculum to individual skill levels.
AngularNode.jsHTMLCSSJavaScriptPHPPythonPandasSQL

Loka & nf-core Bioinformatics Hackathon

Open-source Contributor

North Macedonia

Mar 2026
  • Contributed code improvements, bug fixes, and documentation to nf-core Nextflow pipeline modules at an international hackathon, collaborating with researchers on reproducible bioinformatics workflows.
Pythonnf-coreNextflowBioinformatics

Skills

What I work with

Languages

PythonGoTypeScriptJavaScriptJavaC#C/C++SQLPHPBash/Shell

Web & APIs

Spring BootAngularNestJSNode.js.NETFastAPIFlaskHTMLCSSTailwind CSSREST APIsWebSocketsNginx

Databases

MySQLPostgreSQLMongoDBRedisAWS RDSAWS Aurora

Data & ML

PySparkApache SparkApache FlinkKafkascikit-learnPandasMatplotlibSeabornDeep LearningLLMsRAGData MiningETLMLOpsDatabricksStatisticsData VisualizationBioinformatics

Cloud & DevOps

AWS (S3, EC2, IAM, CloudFront, Lambda)DockerKubernetesCI/CDJenkinsGitGitHubLinux/UnixSSH

Architecture

MicroservicesMulti-Tenant SaaSEvent-DrivenMVCREST APIsETL PipelinesLambda ArchitectureHexagonal/Clean Architecture

Tools

SAPHypatosGitHubClickUpPostmanJiraConfluenceGitLabBitbucketOpenAI APIContentful

Education

Academic background

B.Sc. Software Engineering & Information Systems

Faculty of Computer Science and Engineering (FINKI), UKIM

Skopje, North Macedonia · GPA: 3.4/4.0

Graduated

Key coursework

Algorithms & Data Structures

Complexity analysis, trees, graphs, dynamic programming, sorting and search algorithms.

Operating Systems

Process and memory management, scheduling, file systems, concurrency and synchronisation.

Computer Networks

TCP/IP stack, routing protocols, socket programming, and network security fundamentals.

Databases

Relational modelling, SQL, query optimisation, transactions, and NoSQL fundamentals.

Software Engineering

SDLC, agile methodologies, requirements engineering, testing, and design patterns.

Artificial Intelligence

Search algorithms, knowledge representation, logic programming, and planning.

Machine Learning

Supervised and unsupervised learning, model evaluation, feature engineering, neural networks.

Data Mining

Association rules, clustering, classification, and pattern recognition in large datasets.

Big Data Mining

Distributed processing with Apache Spark, Flink, and Kafka, batch and streaming pipelines at scale.

DevOps Software Development

CI/CD pipelines, infrastructure as code, containerisation, automated testing, and release management.

Information Security

Cryptography, access control, network security, threat modelling, and compliance.

Statistics & Probability

Statistical inference, probability theory, hypothesis testing, and regression analysis.

Web Programming

Client-server architecture, REST APIs, JavaScript frameworks, and authentication.

Bioinformatics

Biological sequence analysis, genomic data pipelines, and computational biology tools.

Computer Architecture

CPU design, instruction sets, memory hierarchy, pipelining, and parallel processing.

Certification

AWS Certified AI Practitioner

Languages

Macedonian (Native) · English (C1) · German (A2)

hristijanmijalkov2@gmail.com© 2026 Hristijan Mijalkov