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Work Background
DAC.digitalBack End Software Developer
May. 2022Gdańsk, Pomorskie, PolandDeveloped B2B auction features: controlling the closing time of auction items, sellers’ bank accounts management, media service performance improvements, Grafana metrics setup. Trained team in: JavaScript intro, Event Storming intro. Provided on-site technical support.
Freelance (Self employed)Self-learning trainer
May. 2022Gdańsk, Pomorskie, PolandDeveloped B2B auction features: controlling the closing time of auction items, sellers’ bank accounts management, media service performance improvements, Grafana metrics setup. Trained team in: JavaScript intro, Event Storming intro. Provided on-site technical support.
Venja healthFullstack early-phase startup software engineer
Feb. 2022 - Apr. 2022RemoteSupported early-stage business and product shaping Designed, developed and delivered the first solution Streamlined processes
STRÖER labsSoftware Engineer
May. 2017 - Jan. 2022Berlin, GermanyDeveloped Adtech/DSP features campaign debugger, video adserver, inventory & age-gender targeting, campaign performance monitor around main bidding component. Was part of full maintenance / devopsqa approach: involved from architecture, design, coding, automatic testing through deployment and A/B testing in production. Provided extensive on-site and onsite / on-call support. Onboarded new team members. Owned and maintained main DSP bidding Java/JavaScript component. Contributed to test expert group . Coordinated Kanban boards. Lead continuous tech improvements: Java11 upgrade and dockerisation. Trained team: kanban intro, git, DDD intro/overview, kubernetes intro.
homifyJava & Spring Software Developer / informal tech lead
Oct. 2016 - Jan. 2017Berlin, GermanyLead backend mobile feature architecture, design, testing & development: rooms, professionals and magazine APIs. Mentored 3 people. Tuned performance of SQL statements. Coordinated project: captured requirements, used Scrum & Kanban techniques.
SoftwareMind/AilleronSoftware Engineer, Senior software engineer, Scrum Master
May. 2011 - Jul. 2016Cracow, Małopolskie, PolandMember of various teams: mobile payments, network monitoring, voice mail, marketing automation, internet banking. Internet banking project (finance): Developed dashboard API with unit and integration tests. Marketing automation project (adtech): Designed and developed HBase backend storage. VOIP-based voice mail (telco): Implemented speech vs. silence detection on SIP server. Implemented extensive integration & unit tests. Migrated codebase from svn to git. Network monitoring (telco): Fixed bugs, included new version of INAP/RANAP protocols support. Introduced ansible deployment. Mobile payments integration (finance): Contributed to overall architecture. Designed features for Android DCB feature design. Coordinated 15-person Scrum & Kanban project. Maintained transaction monitoring system. Co-lead Java training centre and coordinated training sessions coordination. Ran internal trainings: git, lambda calculus, java8 workshop, python.
Motorola Solutions, KrakówSoftware Engineer
Feb. 2009 - Mar. 2011Cracow, Małopolskie, PolandFixed hard bugs in legacy and 3rd party code. Implemented new devices SNMP1/3 support. Configured fault management system to support new SNMP devices. Ported fault management system from SPARC to x86. Wrote and maintained formal requirements, analysis, design and installation documentation. Automated build, unit testing and installation processes. Trained developers in maven, design patterns. 1st experience with distributed source control system. Learnt the best Solaris editor, vi the hard way.
GameopediaRuby Software Developer
Oct. 2007 - Dec. 2008Świdnica, Dolnośląskie, PolandLead development of a backend component to scrape, normalize and import publicly available content from games portals into MySQL database. Devops'ed / administered Amazon EC2 Linux cluster and MySQL database. 1st experience in cooperation with a tiny but fully remote team.
GLOBOFORCE UK LIMITEDJava Developer, Implementations Team Lead
Sep. 2004 - Mar. 2007Dublin, County Dublin, IrelandDeveloped backend of features for voucher handling system. Lead 3-7 person web development, QA and multilingual content & configuration team. Prototyped automatic testing. Written and maintained custom CI server. Visualised implementations work flow in columnar board (not knowing about Kanban at that time).
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