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Consulting Services

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I am a senior software engineer and systems architect with experience in backend engineering, data platforms, IoT integrations and scalable cloud systems.

I build reliable, maintainable solutions for companies that need a strong technical partner.

Core Services

1. Backend Engineering and Architecture

I design and implement backend systems with a focus on correctness, performance and scalability.

Experience includes:

  • API design (REST, WebSockets, MQTT)

  • Microservices and service-oriented systems

  • High-throughput and distributed backends

  • Event-driven and streaming architectures

  • Performance optimization and refactoring of legacy code

Technologies: Go, Python, Java, Node.js, Docker, Kubernetes, Redis, SQL and NoSQL databases.


2. Data Engineering and Big Data Systems

I build and optimize data pipelines and large-scale processing systems.

Work includes:

  • ETL and ELT pipelines

  • Real-time data ingestion

  • Large-scale processing using Spark, Hadoop, Flink, Beam and Wayang

  • Data modeling and warehouses

  • Analytics infrastructure for dashboards or machine learning

I focus on reliability, measurable performance and clean data flows.


3. IoT and Edge Integrations

I have experience integrating devices and industrial systems with cloud services.

Areas covered:

  • IoT protocols (BACnet, MQTT, Modbus, Zigbee, BLE)

  • Gateway design and device-to-cloud messaging

  • Telemetry processing

  • Monitoring and alerting pipelines

If your devices need reliable communication and structured data delivery, I can build the system end to end.


4. AI and Automation Engineering

I integrate AI where it provides real value, not hype.

Work includes:

  • LLM integration (OpenAI, local inference, embeddings)

  • Automated agents and workflow systems

  • Document processing and analytics

  • Hybrid systems combining traditional software and AI components

The goal is practicality and measurable impact.


5. Technical Consulting and System Audits

Consulting services for teams that need clarity or an experienced second opinion.

Examples:

  • Architecture reviews

  • Debugging of complex production issues

  • Cloud cost reduction

  • Migration planning (monolith to microservices, on-prem to cloud)

  • Reliability and security assessments


Selected Projects

BACnet to MQTT Gateway

IIoT gateway that connects building automation networks to cloud infrastructure.

Technologies: JavaScript, BACnet, MQTT.
Result: Real time telemetry from BACnet devices forwarded into MQTT topics for further processing and monitoring.

Distributed Data Processing Optimization (Wayang)

Work on Apache Wayang to improve multi platform data processing.

Focus: cross platform execution, routing and optimization of data flows across different processing backends.

Lucendex

Non custodial, deterministic routing engine for the XRPL decentralized exchange. Technologies: Go, PostgreSQL, Terraform.

Function: Provides quote generation and routing for XRPL DEX, with real time indexing of AMM pools and orderbook state, QuoteHash based deterministic execution, Ed25519 authenticated API access and a zero custody design where users sign transactions client side. 


How I Work

  • Clear communication and documentation

  • Ability to work independently or embedded in a team

  • Focus on correctness, maintainability and long-term stability

  • Flexible engagements: hourly, project-based or ongoing consulting


Contact

If you need support with backend engineering, systems architecture, data systems or IoT integrations, get in touch.

LinkedIn: https://www.linkedin.com/in/alexanderalten/
GitHub: https://github.com/2pk03
Website: Contact



If you need help with distributed systems, backend engineering, or data platforms, check my Services.

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