About Tomasz
About me:
• Common sense Software Engineer with over a decade of experience in the industry;
• Experienced Agile team member;
• Specialised in full-stack JavaScript / TypeScript;
• Focused on design patterns(Gang of Four) and principles(SOLID, CleanCode);
• Always looking for the balance between pragmatism and purism;
• Use tools(frameworks/libraries/environments) in order to deliver secure, scalable, and reliable software within a reasonable time period;
• With extensive knowledge and experience in Authentication and Authorization in microservices architecture;
• Interested in:
- Message-oriented architectures;
- Hexagonal Architecture;
- Command Query Responsibility Segregation;
- Microservices architecture;
- Message queues.
My technical skills:
• Software design and development process:
- Object-oriented design principles;
- Synchronous and asynchronous programming (very good understanding of promises);
- Design Patterns;
- Refactoring;
- TDD, BDD.
• Programming languages:
- TypeScript;
- JavaScript, ES6, ES7;
- Go;
- HTML and CSS;
- Basics of embedded programming in Arduino C++.
• Frameworks:
- Advanced usage of Node.js;
- React.js.
• Testing:
- JavaScript testing with jest, sinon, mocha, chai, jasmine;
- Author of open source ts-sinon library for stubbing/mocking in TypeScript
- Go testing with testify and httptest;
- React.js component testing with mocha and enzyme;
- End-to-end/component testing with webdriver.io
- Knowledge about testing strategies in a microservices architecture.
• Infrastructure:
- RMDBS - MySQL, PostgreSQL, MS SQL;
- NoSQL – AWS DynamoDB, MongoDB, Elasticsearch;
- AWS - Route 53, CloudFront, API Gateway, Lambda, ECS, Cognito, S3, EC2;
- Docker and Docker Compose;
- Serverless Framework;
- ELK Stack (Elasticsearch, Logstash, Kibana);
- Continuous integration using Jenkins, GoCD;
- Continuous delivery, Blue-green deployment;
- Good knowledge of Apache Kafka;
- Web services communication protocols - REST, WebSockets, Protobufs
English
Fluent
Polish
Native or bilingual
Remote only
Primarily works remotely
Experience
- Bourne Leisure LtdSenior Software EngineerNovember 2020 - June 2022 (1 year and 7 months)• Backend development of customer-facing Haven Activities mobile app;• Designed and developed API integration service between the legacy system and new API;• Developed Payment Service API (integration with Braintree Payment Provider);• Developed Pricing Service API and processes to migrate the data from the legacy system;• Supported the initial development of the new Activities Admin UI system;• Software development in TypeScript (node.js);• Test-Driven Development;• Agile Team Member.
- Third Bridge Group LimitedSenior Software EngineerApril 2019 - March 2020 (11 months)London, UK• Full-stack development of customer-facing insights platform - Third Bridge Forum;• Full-stack development of backoffice system for Operations Team to handle insight conference calls workflow and other internal processes;• Proposed a concept, designed and led the implementation of the company wide authentication system for clients and internal users in collaboration with DevOps team and VP of engineering (tech stack: AWS Cognito, API Gateway, AWS Lambda, AWS ECS, TypeScript, Node.js, Go);• Implemented authentication gateway proxy as an entry point to internal and external services and applications using Go.• Designed and built a proof of concept for a migration to a new search engine using TypeScript, Node.js and Algolia API;• Designed, implemented and deployed a service to capture and store clients behaviour data in order to encourage data-driven business decision making and assess potential search engine replacement impact in collaboration with Business Intelligence Team (tech stack: TypeScript, Node.js, AWS Lambda and AWS S3);• Took a part in design, implementation and maintenance of third-party API integration to automate insight transcripts workflow;• Took a part in refactoring of legacy parts of the system;• Introduced TypeScript in the team, shared the knowledge about the language through pair programming and code reviews;• Software development in JavaScript (ES6, TypeScript, React, Node.js), Go and PHP;• Test-Driven and Behaviour-Driven Development;• Agile Team Member (Scrumban).
- InvestecSenior Software EngineerMay 2017 - March 2018 (10 months)London, UK• Designed, developed and delivered fully functional internal social network platform based on third-party software integrated with bank authentication and authorization services and data providers;• Set up the deployment pipeline in collaboration with the DevOps team;• Implemented security mechanisms advised by the InfoSec team using microservices approach;• Managed the further development and delivery of platform features;• Software development in JavaScript (ES6 Node.js) and PHP;• Mentored a graduate and cooperatively implemented automated end-to-end test suite for the platform using Nightwatch.js;• Test-Driven Development.
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Education
- Computer Science and EconometricsUniversity of Economics, Katowice2014Computer Science and Econometrics