Warsaw, Poland / Worldwide (Remote)

Marcin Pejski

Java Software Developer

For over 10 years, I have designed and delivered Java systems with strong focus on architecture, scalability, and long-term maintainability

LinkedIn GitHub [email protected]

About

Bio

I’m a software engineer with over 10 years of experience building backend systems and leading technical work across teams.

At Send, I lead multiple engineering teams and contribute to architecture and delivery across projects. I worked on insurance systems and GIS-based platforms at Decerto and ConnectPoint.

I focus on Java & Spring, cloud technologies, and AI systems, including LLM integrations and agent-based workflows.

Latest Projects

Homeward.pl

A home management platform that brings key household operations into one structured workspace, helping owners stay organized and make better day-to-day decisions

Role: Co-creator
Scope: Co-creating the product system architecture, domain workflows, and technical foundations for reliable data handling, reminders, and document-driven household operations

Product ArchitectureWorkflow DesignSystem IntegrationData Modeling

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Insurance Underwriting SaaS Platform

A modular underwriting platform for insurers and MGAs, focused on faster workflows and better decisions in daily operations

Role: Java Developer / Tech Lead
Scope: Architecture, microservices development, underwriting workflows, compliance modules, and document flows

JavaSpring BootMicroservicesAWSSQL

Insurance Policy Issuance Platform

A policy issuance solution built to speed up operations, keep regulatory compliance clear, and improve agent experience

Role: Java Developer
Scope: Automation of issuance flows, business process implementation, and backend service integration

JavaSpringRESTSQL

GIS District Heating Management Platform

A GIS-based system for district heating operations combining live monitoring, simulations, and emergency support tools

Role: Software Developer
Scope: Data integrations, GIS-backed workflows, and decision-support platform capabilities

ArcGISSQLJavaEnterprise Integrations

Partners

Levitating Apes

Levitating Apes is a B2B software house delivering enterprise systems for transport and logistics, insurance, and renewable energy across e-commerce, mobile, and cloud infrastructure.

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Grizzly Software

Grizzly Software delivers custom business and enterprise software with strong focus on scalable engineering and modern delivery practices

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Send

Send builds an underwriting orchestration platform for commercial and specialty insurance, connecting data, workflows, and decisions in one system

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Decerto

Decerto delivers software and consulting services for the insurance market, helping organizations digitize products, processes, and core operations

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ConnectPoint

ConnectPoint provides IT and integration solutions with focus on operational platforms, data flows, and industry-specific systems

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Latest Blog Posts

March 27, 2026

What is Promptfoo? A Practical Guide to Testing and Evaluating AI Prompts

Learn how to test, evaluate, and improve your AI prompts using Promptfoo

Prompt EngineeringLLMTestingPromptfoo

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Have a project in mind?

Feel free to reach out if you need help building a product or improving an existing platform

Email: [email protected]

LinkedIn: Go to my profile