Looking for a job

Tomasz Grecki

@tomaszgrecki

Message

I build high-performance web platforms, SDKs, and developer tooling at scale.

Poland

Message

What I'm looking for

I'm looking to lead front-end architecture and platform work that improves performance, reliability, security, and developer velocity while enabling teams to deliver high-impact products.

I build web platforms, SDKs, and front-end systems that make products faster, safer, and easier to evolve.

At Infinex, I reduced TypeScript language-service latency by 95–99%, led adoption of a modern toolchain, and designed security-critical wallet import/export capabilities. I also established reusable platform primitives for feature flags and audit logging, and led a hybrid SSR/CSR application architecture that achieved a Lighthouse score of 95.

At Rokt, I redesigned the Web SDK to reduce latency by 45%, cut bundle size by 42%, and supported high-availability systems serving more than 600 requests per second. As Engineering Manager, I led eight front-end engineers delivering the Web SDK and dynamically composable UI platform while driving OKRs and cross-functional delivery.

Earlier, I led banking projects at Sandstone Technology, modernised front-end systems with Angular and RxJS, and built reusable component libraries. I began my career at Nokia, developing telecom planning and analytics tools, including MINT, recognised as Best R&D Project.

Experience

Work history, roles, and key accomplishments

Staff Software Engineer

Infinex

Aug 2025 - Apr 2026 (8 months)

Led architecture of a greenfield web application using hybrid SSR/CSR, reduced TypeScript language service latency by 95-99%, and improved perceived load time from seconds to near-instant interaction.

TypeScript React TanStack Start Vite Cloudflare Workers AWS Datadog RUM APM CSP Security Headers Structured logging Error Reporting Monitoring

Engineering Manager

Rokt

Dec 2022 - Apr 2024 (1 year 4 months)

Led a high-performing team of eight front-end engineers, responsible for delivering two major projects while remaining involved in architecture and technical decision-making.

Team Leadership OKRs Cross functional Coordination System Design Security Posture Management

Staff Software Engineer

Rokt

Sep 2018 - Nov 2022 (4 years 2 months)

Led redesign of the Web SDK, reducing latency by 45% and enabling Subresource Integrity checks. Maintained high-availability front-end systems serving 600+ requests/sec and reduced bundle size by 42%.

SDK RPC Architecture Subresource Integrity Performance Optimization Observability Rollback Planning Privacy Technology RICE Framework

Tech Lead

Sandstone Technology

Feb 2014 - Aug 2018 (4 years 6 months)

Tech Lead for multiple high-impact banking projects, leading end-to-end delivery from requirements to production. Drove front-end modernisation and built reusable component libraries.

Angular RxJS Component Libraries Testing Code Quality Architecture Mentorship

Software Developer Specialist

Nokia

Jul 2011 - Jan 2014 (2 years 6 months)

Developed tools for telecom network planning, including a Java-based desktop application and internal analytics platform. Built 'MINT', an internal data analysis tool recognised as Best R&D Project.

Java Desktop Applications Analytics Platforms Data Analysis