Robert Goniszewski

Building and evolving an in-house CRM platform and adjacent internal tooling in the legal-tech domain. Owning architecture decisions across the stack while handling sensitive PII with appropriate data-protection and access controls. Delivery emphasizes AI-assisted development, iteration speed, and maintainable product architecture.

• DOMAINLegal tech — in-house CRM solution and supporting internal tooling
• RESPONSIBILITYArchitecture decisions and careful handling of PII-sensitive data flows
• DELIVERY APPROACHAI-assisted full-stack development for rapid, high-quality iteration

Modernizing existing code and implementing core decisioning logic for a US mortgage platform using TypeScript and Jest. Ensuring deterministic integer-based monetary calculations and compliance with strict lending regulations. Engineered a PoC for an internal AI-driven SEO automation module using LLMs.

• DOMAINUS mortgage decisioning and lending-compliance backend modernization
• KEY TECHNOLOGIESNode.js, TypeScript, PostgreSQL, Docker, Jest, DDD

Designed and shipped a closed-source production SaaS end-to-end as sole developer. The platform is now in stable support mode, with focused after-hours iterations used to test modern architecture patterns and delivery approaches.

• MODE & SCOPELTS / Stable with low maintenance workload; sole developer across architecture, backend, infra, and delivery
• KEY TECHNOLOGIESNext.js 15, React 19, TypeScript 5, Node.js 22, PostgreSQL + Drizzle ORM, Better Auth, Redis + BullMQ, Meilisearch, Docker, Cloudflare

Developed and maintained serverless and microservice-based backend systems. Designed and implemented solutions with payment gateways, BaaS, and ML modules. Managed cloud infrastructure using Serverless Framework and Terraform. Led technical discussions, code reviews, and team support.

• DELIVERY MODELServerless and microservice backend ownership with technical leadership and team support
• KEY TECHNOLOGIESNode.js, TypeScript, Serverless Framework, Terraform, AWS (Lambda, DynamoDB, CloudWatch, Step Functions), PostgreSQL, GraphQL, Docker, REST API, CQRS, DDD

Salesforce Collection Solution: developed a serverless donation management system for a non-profit client using AWS Step Functions and CDK to automate complex payment flows. Digital Education Platform: designed and implemented a scalable backend with AWS Fargate, DocumentDB, and API Gateway. BITS Converter (global non-profit): advanced a publication converter, implementing MVP features and deployment pipelines using Node.js and AWS.

• PROJECT MIXDonation automation, education platform backend, and converter MVP delivery for global non-profits
• KEY TECHNOLOGIESNode.js, TypeScript, Python, AWS (Lambda, CDK, API Gateway, Step Functions, EC2, S3), Serverless Framework, Salesforce, IaC

Developed frontend (React.js, Next.js) and backend (Node.js/Nest.js, PostgreSQL) components for a subscription service. Integrated third-party services including Chargebee, Stripe, and Contentful. Built internal management dashboards.

• PRODUCT SCOPEFull-stack subscription platform delivery with third-party billing and CMS integrations
• KEY TECHNOLOGIESNode.js, Nest.js, Next.js, React.js, TypeScript, PostgreSQL, TypeORM, AWS, Stripe, Contentful

Developed a core API service from scratch using Node.js and Express.js. Extended an in-house WebSocket chat service and integrated MongoDB and Redis. Created an image processing microservice with AWS S3.

• OWNERSHIPBuilt core API from scratch and expanded real-time chat plus media microservices
• KEY TECHNOLOGIESNode.js, Express.js, JavaScript, MongoDB, Redis, AWS S3, WebSockets

Contributed to web projects including a remote-controlled lighting system dashboard (Node.js/React) and a Zero Trust Security Platform PoC on AWS. Built early experience across Node.js, React, Python, and AWS.

• EARLY FOCUSWeb platform implementation and AWS security PoC contributions across client projects
• KEY TECHNOLOGIESNode.js, Express.js, Python, React, AWS (S3, IoT Core)