Available for New Projects

We Build Exceptional
Software Solutions

We build custom software solutions and provide expert development teams for FinTech, Enterprise, and AI/ML projects. From consulting to full delivery - we adapt to your needs, ensuring secure, performant applications that drive business growth.

50+ Projects Delivered
16+ Years Experience
4.9/5 ★★★★★ Client Rating
principal-devs.py 
class PrincipalDevs:
    def __init__(self):
        self.expertise = [
            "FinTech",
            "Legal Tech",
            "E-commerce",
            "AI/ML"
        ]
        self.commitment = "Excellence"
    
    def deliver(self, project):
        return {
            "quality": "exceptional",
            "timeline": "on-schedule",
            "support": "continuous"
        }
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Trusted by leading companies

What We Do

Services That Drive Innovation

End-to-end software development with deep industry expertise

FinTech Development

Build secure, compliant financial applications including payment systems, trading platforms, and banking solutions with PCI DSS and regulatory compliance.

  • Payment Processing
  • Trading Platforms
  • Risk Management
  • GDPR Compliance
  • Anti-Fraud Systems
  • Regulatory Compliance
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AI/ML Solutions

Specialized in leveraging AI/ML solutions for large-scale document processing, designing data-driven automated systems, and delivering high-performance, low-latency applications with proven efficiency improvements up to 400%.

  • Document Processing
  • RAG Systems
  • Image Analysis & Recognition
  • LLM Fine-tuning
  • Workflow Automation
  • Financial ML Systems
  • Predictive Analytics
Learn More →

Custom Software Development

End-to-end development from MVP to enterprise-scale applications with modern cloud-native architecture.

  • MVP to Enterprise Applications
  • API Development & Integrations
  • Legacy System Modernization
  • Cloud-Native Architecture
  • Microservices Design
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DevOps & Infrastructure

Build and optimize infrastructure with proven 30-400x performance improvements and zero-downtime deployments.

  • CI/CD Pipeline Setup
  • Kubernetes Orchestration
  • Infrastructure as Code
  • Performance Optimization
  • Monitoring & Observability
  • Security Hardening
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Data Engineering

Design and implement data pipelines, real-time processing systems, and analytics platforms for data-driven decisions.

  • Data Pipeline Architecture
  • Real-time Stream Processing
  • Analytics Platform Development
  • Database Optimization
  • Data Warehouse Design
  • ETL/ELT Solutions
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Core Competencies

Technical Excellence

Python Python
Node.js Node.js
Java Java
Go Go
C C
Spring Spring Boot
FastAPI FastAPI
Pydantic Pydantic
Flask Flask
gRPC gRPC
React React
Angular Angular
Vue Vue.js
TypeScript TypeScript
Next.js Next.js
Redux Redux
D3.js D3.js
Chart.js Chart.js
PostgreSQL PostgreSQL
MongoDB MongoDB
Redis Redis
Kafka Kafka
NATS NATS
⏰ TimescaleDB
❄️ Snowflake
🔍 Elasticsearch
AWS AWS
Kubernetes Kubernetes
Docker Docker
Terraform Terraform
GitHub Actions GitHub Actions
GitLab CI GitLab CI/CD
ArgoCD ArgoCD
Helm Helm
Prometheus Prometheus
Grafana Grafana
Azure Azure
GCP GCP
TensorFlow TensorFlow
PyTorch PyTorch
🤖 LLM
📝 NLP
👁️ Computer Vision
📊 Machine Learning
🧠 Neural Networks
📋 OCR
Case Studies

Success Stories

FinTech

Polish Banking API Gateway

Created a unified gateway implementing the Polish API standard that allows Polish banks to share customer transaction data (with customer consent). The gateway abstracts different bank interpretations of the API, providing a consistent interface for payment providers.

Python Django API Gateway Polish API Standard
AI/ML

AI-Powered Document Processing Platform

Developed machine learning-based system for large-scale financial document processing with automated item assignment through AI image analysis. Delivered physical workflow management system achieving up to 400% processing efficiency improvements for enterprise clients.

TensorFlow PyTorch ONNX Runtime AWS SageMaker Python Document Processing
Logistics

High-Performance Data Platform

Transformed enterprise data processing platform, delivering 30-400x performance improvements that enabled rapid data corrections and real-time business decision making. Led cross-functional team delivery using agile methodologies while maintaining seamless business operations and stakeholder alignment.

Enterprise Architecture Performance Optimization Team Leadership Agile Delivery Business Integration
Security

High-Availability Data Diode Solution

Designed and implemented a high-availability unidirectional data transfer system ensuring 100% secure data flow from high-security to lower-security networks. The solution processes gigabit-speed traffic with zero downtime through intelligent redundant path management, meeting strict enterprise compliance and security requirements.

Python Linux NFQ NFT RHEL cProfile Network Bridge
Platform Engineering

Multi-Platform DevOps Ecosystem

Contributed to comprehensive infrastructure automation platform supporting Kubernetes, OpenStack, and monitoring solutions. Developed CI/CD pipelines, automated installers, developer environments, and team training programs. Helped introduce SCRUM practices and established enterprise-grade code quality standards.

Python Ansible Docker Kubernetes OpenStack Jenkins Vagrant
Communications

Email System Modernization

Contributed to complete redesign and modernization of high-scale email system architecture, ensuring zero-downtime migration. Architected robust multi-account email aggregation platform with advanced POP3/IMAP integration. Implemented performance optimizations for high-load database operations and established comprehensive CI/CD practices for enterprise email infrastructure.

Python C MySQL POP3/IMAP Database Optimization CI/CD
Analytics

Revenue Management Analytics Platform

Contributed to developing comprehensive analytics platform enabling data-driven revenue optimization decisions. Worked on flexible user-configurable reporting system with seamless data migrations and zero business disruption. Achieved significant database performance improvements and helped establish organization-wide development standards.

Python PostgreSQL BigQuery JSON Schema EBNF/LARK Parser Argo
Meet the Team

Expert Leadership

Seasoned professionals with proven track records at top companies

Konrad Cempura

Konrad Cempura

Co-Founder / Backend Specialist

16+ years delivering complex, mission-critical solutions. Expert in high-performance architectures and system optimization. Samsung (5G), FLYR Labs (airline optimization), Onet Poczta.

Python Architecture Leadership
Oleksii Shestakov

Oleksii Shestakov

Co-Founder / Frontend Specialist

Frontend development expert with deep financial sector experience at HSBC and FLYR Labs. Master of React ecosystem and enterprise-level financial interfaces.

React TypeScript FinTech
Oleksandr Selianskyi

Oleksandr Selianskyi

Business Analyst / Product Owner

10+ years in FinTech specializing in Ecommerce & Payments. Led product development at Fondy and Wirex.

FinTech Payments Scrum
Mateusz Kuziemko

Mateusz Kuziemko

Technical Team Lead

Experienced tech leader with extensive FinTech background. Expert in microservices and Kubernetes.

Python Kubernetes FinTech

Ready to Build Something Amazing?

Let's discuss how we can transform your vision into reality

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Common Questions

Frequently Asked Questions

Quick answers to help you understand how we work

How quickly can you start?

We can typically start new projects within 1-2 weeks. For urgent needs, we can mobilize a team within days depending on availability.

Do you work with startups or only enterprises?

We work with companies of all sizes - from funded startups building their MVP to enterprises modernizing legacy systems. Our flexible engagement models adapt to your needs and budget.

Can we hire just one developer?

Yes! We offer individual expert developers for team augmentation, or complete teams for larger projects. Scale up or down as your needs change.

What's your typical project size?

Projects range from $10K quick wins to $500K+ enterprise transformations. We focus on delivering value regardless of project size.

Do you provide ongoing support?

Absolutely. We offer maintenance packages, SLA-backed support, and can transition projects to your team with comprehensive documentation and training.

What makes you different from other agencies?

We're developers who avoid unnecessary meetings and focus on shipping code. Our team has deep expertise from companies like Samsung, HSBC, and FLYR Labs - we bring enterprise experience without enterprise overhead.

Get Started

Let's Connect

Location

Kraków, Poland
Central European Tech Hub

Direct Contact

Konrad: +48 505 718 801
Oleksii: +48 662 748 360

Response Time

We respond within 24 hours
Available Mon-Fri, 9AM-6PM CET

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