Nick Kuts
Technical Lead & Senior Full Stack Engineer
10+ years • Warsaw, Poland • TypeScript, Node.js, React • AWS, Serverless, Event-Driven Architecture
The Journey
Technical Lead & Senior Full Stack Engineer with 10+ years of experience developing scalable cloud architectures, event-driven systems, and secure enterprise integrations across AWS and SaaS platforms.
Distinguished track record of leading cross-functional teams through monolith-to-microservices conversions, developing modern TypeScript/AWS/Serverless stacks that decreased infrastructure costs by 40%, and launching high-throughput platforms that service 200K+ users and 100K+ daily events.
Passionate about engineering excellence, compliance-ready architecture, and coaching teams to develop high-quality software that can accelerate product release.
Core Expertise
Technical Leadership
Leading teams, architecting solutions, and driving product strategy while maintaining high code quality and team productivity.
Full-Stack Development
Building modern web applications with React, Next.js, Node.js, and TypeScript, focusing on performance and user experience.
Backend Engineering
Designing and implementing scalable microservices, APIs, and data synchronization systems with cloud technologies.
System Architecture
Creating robust, scalable architectures that handle high-traffic applications and complex business requirements.
Where I've Made Impact
Architecting systems that scale, leading teams that deliver
Piedmont Global
Technical Lead
- ▹Developed and implemented architecture roadmap for HIPAA-compliant SaaS transformation, leading 7 engineers on 2 teams to migrate from monolith to cloud-native app, improving reliability and scalability for serving 1K+ clients
- ▹Defined architecture strategy and guided engineers through design reviews to deliver an event-driven serverless platform (AWS Lambda, Fargate, Aurora PostgreSQL), reducing infrastructure costs by ~30% per AWS reports
- ▹Enhanced cross-team efficiency by standardizing the tech stack (TypeScript, NestJS, AWS) decreasing release times by 50% per Jira metrics and product stakeholder feedback
- ▹Drove frontend modernization with Tailwind + shadcn adoption and a unified TanStack Router/Query, shortening client onboarding time by 30% vs prior records
- ▹Aligned Product, Security, and Engineering teams on architecture strategy, enhancing compliance, observability, and customer retention through the adoption of Datadog, Snyk, Vanta, Inngest, and Twilio
IG
Senior Backend Engineer
- ▹Applied advanced backend architecture and integration practices to deliver scalable, secure, high-throughput SaaS and trading platforms for 200K+ global users with 99.9% uptime
- ▹Established IBKR account integrations via BFF as well as event-sourced architecture, enabling secure account opening/close/balance retrieval in DynamoDB with high transaction consistency
- ▹Created secure IBKR server-to-server authentication and constructed data transformation pipes for mobile/chart consumption, generating OpenAPI schema to facilitate standardized API ownership across teams
- ▹Developed a unified CRM pipeline using Salesforce and Braze integrations (EventBridge, SQS (FIFO), webhooks) to handle 200K+ daily sync events, improving subscription management and contact syncing
- ▹Optimized backend reliability and deployment efficiency by automating GitLab CI/CD pipelines and modernizing testing with mswjs, k6, and Artillery, accelerating CI runtime by ~50% and maintaining high code quality
- ▹Implemented observability controls in collaboration with compliance teams, using CloudWatch for monitoring, KMS for encryption, and IAM policies for KYC compliance to ensure regulatory audit readiness
Perlon AI
Full Stack Software Engineer
- ▹Architected and optimized backend infrastructure supporting 50K+ mailboxes and 100K+ daily sync events, improving throughput and system resilience
- ▹Integrated secure OAuth 2.0 Google and Microsoft (Warmy/Nylas) to implement enterprise-level multi-account syncing decreasing auth failure rates by ~30%
- ▹Developed event-driven CSV import pipeline with Vercel Blob & Inngest orchestration, lowering import time by ~40% for large dataset (5K+ records) with retry policies, batching and concurrency control
- ▹Built a two-way CRM sync layer between Salesforce and HubSpot with webhooks, Zod schema validation, and hash-based conflict resolution, achieving >99.9% mapping accuracy across accounts and campaigns
- ▹Engineered a Pub/Sub-based compatibility layer for migrating Nylas API v2 to v3, ensuring seamless adoption of API changes across Google and Microsoft integrations with zero downtime, completing the rollout < 1 month
White Digital
Technical Lead
- ▹Led 2 distributed teams (6 Devs, 1 PM, 1 QA) at a global software outsourcing firm, delivering 8+ international client projects (avg. 6-month cycles, $50K budgets) across Fintech, Logistics, Travel, and Social Media domains
- ▹Defined architecture standards and led full-stack React/Node.js development, reducing MVP timelines by 40% (6 to 3 months), while establishing scalable engineering practice to maintain high code quality
- ▹Evaluated and optimized tech stacks for Web, Mobile, and API systems to save internal maintenance costs and development overhead by 50%, improving performance across client platforms for higher customer satisfaction
- ▹Implemented engineering reviews, mentorship programs, and CI/CD pipelines, improving deployment stability and delivery predictability while preparing the team for enterprise-scale engineering practices
Bairro
Senior Software Engineer
- ▹Led a team of 5 developers on designing and launching a startup e-commerce platform for instant grocery delivery, boosting repeat customer engagement by 20%
- ▹Delivered core platform modules (cart, courier tracking, payments, and product catalog) with Next.js and React Native, optimizing server-side rendering performance with PageSpeed Insights and Datadog APM
- ▹Collaborated with Product and Project Managers to refine feature priorities and estimation, implementing Kanban in select workflows to accelerate release cycles and reduce bugs by 25%
ABM Cloud
Full Stack Engineer
- ▹Architected and developed core services (Orders, Finances, Inventory, Logistics, Stats, Communication) using a Serverless Microservices approach on AWS, faster data processing by 30% and scaling to 100K+ daily orders
- ▹Led ERP integrations with 6 major corporate clients, coordinating across two external teams, resolving bugs and documenting all endpoints to streamline data exchange, resulting in fewer outages and shorter response times
- ▹Co-developed React Native and Next.js logistics apps to improve driver delivery workflows, contributing to a 15% reduction in delivery times as measured by driver KPIs
Tech Stack
Architecture & Cloud
Backend & APIs
Frontend & UX
Engineering Leadership & DevOps
Get In Touch
Open to new opportunities and collaborations