Paweł Abramowicz

Lendable

remote

05/2025–now

senior PHP developer

• pioneered AI usage for code writing and business logic execution as a part of a team praised for their fast adoption – set as an engineering-wide example (a department of ~200 people) while our team was only ~7 strong; lifted delivery throughput ~10%: went from ~5 medium projects per quarter (9 people, plus housekeeping barely finished) to up to 9 projects per quarter with most housekeeping handled by skills and automations
• focused on automating manual operations toil – income-figure approval, KYC/identity verification, loan affordability assessment, and driving-licence checks. Cut manual actions and borrower/dealer contact (the most costly part of customer acquisition) by up to 60%, with identity checks and income estimation done automatically in 95% of cases
• product grew 3x in loan originations over the period I worked on it, with user load scaling accordingly
• pushed for better observability of the project, introducing metrics that eliminated unknowns - notably distinguishing external systems' Unicode/diacritic handling errors from other causes of quote failures, which had previously all surfaced as a single opaque external systems error
• working on a project with strict performance requirements, with basic credit decision available in 8 seconds or less; built automated secondary identity verification that had to fit inside that 8-second budget: one data broker covered ~60% of applicants, adding a second broker raised automated verification to ~90%
• tech highlights: Symfony, MySQL, Redis, RabbitMQ, Kafka, microservices and distributed monoliths, Docker, Ansible

Krajowy Integrator Płatności S.A. – Tpay

remote

07/2023–04/2025

senior PHP developer

• working on a system handling hundreds of thousands of financial transactions every day
• REST API design and development
• high performance and availability required from the system
• lead development on peak performance optimisation with a target of ten thousand transactions in a minute; without changing the underlying data structure we achieved 33 thousand transactions per minute while shortening request time up to 12x; suggested future changes to reach 50 thousand tpm while shortening the request time by further 30%
• introduced event sourcing in a subsystem requiring the ability to audit where each piece of data came from, as well as allowing us to retrieve the data quickly for preview; hosted an internal workshop (~12 attendees) to spread the technique across a company that stood to gain major auditability wins from adopting it more widely - e.g. in onboarding and in preventing fraud via customer-service abuse
• feedback for product teams, ranging from incremental to visionary - some adopted (e.g. an idea folded into the onboarding flow we were building), some aspirational (pitched positioning Tpay as a "Polish PayPal")
• co-proposed and co-ran a company-wide event-storming workshop – 20 people across engineering, product, finance, onboarding and people teams – to surface unknown unknowns in an org mixing since-foundation veterans with fintech newcomers; uncovered several even in our own domain (events/documents assumed to occur once were actually repeatable; beneficiary data presumed non-reusable turned out far richer and widely reusable) and produced the first full map of the payment process in three years
• these event-storming discoveries directly informed the transaction-initialisation service behind the peak-performance work above and the onboarding upgrade; other insights were later reused in the payments-processing service after I left
• frequently volunteered to stand in for the Team Lead and lead the team while he was on vacation
• tech highlights: Symfony, MySQL, Redis, RabbitMQ, Kafka, microservices and distributed monoliths, Docker, Ansible
• working with legacy code as well as creating new microservices in a strangler fig pattern

Contract work

remote

07/2021–06/2023

PHP developer (contractor)

• working in international teams for clients in Switzerland (Jobtome), Germany (AboutYou) and Lithuania (Nord Security)
• working on mid and big data systems (billions of records)
• high performance and availability required from the systems
• REST API design and development
• employing cryptographic systems in projects using libsodium library
• feedback for product teams (using the developed system and noticing problem points)
• tech highlights: Symfony, Laravel and Slim-based projects, API Platform, MySQL, Redis, react-admin, microservices and distributed monoliths

Divante S.A.

remote

09/2018–06/2021

senior PHP developer

• working on OpenLoyalty, a loyalty program management system
• high performance and availability required from the system
• REST API design and development
• tech highlights: Elasticsearch, RabbitMQ, PostgreSQL, Symfony, CQRS

Wonga.pl sp. z o. o.

remote · 08/2017–08/2018 · PHP developer

Functionite

remote · 07/2016–07/2017 · PHP developer