Olena Savelieva

Senior Frontend Developer, Tech Lead

Lviv, Ukraine

TypeScriptAngularTailwind CSSAzure DevOpsGitFigma
Senior Frontend Developer
Trinetix
2025 March - Present
Lviv, Ukraine
- Develop and maintain Angular web applications, delivering high-quality user interfaces that integrate with RESTful APIs to provide dynamic, responsive experiences.
- Contribute to products where AI technologies are an integral part.
- Ensure maintainability, scalability, and performance across projects by applying best practices in Angular development, state management, and component architecture.
- Participate in code reviews and promote knowledge sharing to foster a collaborative and efficient development environment.
- Work within agile teams, contributing to sprint planning, backlog grooming, and continuous delivery to align development efforts with business goals.
AngularTypeScriptRxJSElfTaiga UIJestnxUser Experience (UX)Figma
Frontend Technical Lead
MGID
2023 January - 2024 November
Lviv, Ukraine
- Maintained and enhanced multiple Angular applications tailored to various business client needs, ensuring high performance, scalability, and reliability across projects.
- Led the development of complex features that addressed critical business requirements, collaborating closely with product managers, designers, and stakeholders.
- Actively participated in feature design and planning from a UX perspective, advocating for user-centric interfaces that balance functionality with intuitive interactions.
- Provided technical leadership by mentoring and guiding front-end developers, fostering best practices in coding standards, testing, and architecture to elevate team performance.
- Oversaw code quality through rigorous code reviews and established development workflows that supported agile methodologies.
AngularTypeScriptNgRxMapboxGLMapbox Vector TilesJestRxJSnxAzure DevOpsGitFigma
Frontend Technical Lead
Swiss Re
2020 June - 2022 October
Kharkiv, Ukraine
- Extended and maintained a web application and Nx-based modules focused on geospatial data presentation and interactive map features, delivering efficient and user-friendly solutions for spatial data visualization and interaction.
- Led the front-end development team, overseeing technical direction, coordinating workflows, and ensuring timely delivery of features.
- Mentored junior developers and onboarded new team members, supporting their professional growth through code reviews, pair programming, and knowledge sharing.
- Conducted analysis and design for complex front-end features, including map interactions and data visualization components.
- Collaborated closely with geospatial experts and domain specialists to ensure accurate representation and meaningful interactions with spatial data, translating domain knowledge into effective UI solutions.
- Collaborated with cross-functional teams on shared features, aligning implementation strategies and API contracts to ensure consistency.
TypeScriptAngularSassNode.jsRESTAWSInVisionJiraConfluenceGitGitHubCrowdinSentry
Senior Frontend Developer
Studytube
2018 December - 2020 June
Kharkiv Region, Ukraine
- Extended and maintained multiple integrated web applications forming an interactive learning platform, focusing on performance, scalability, and long-term maintainability.
- Developed and enhanced features using Angular, working closely with designers and product managers to deliver user-friendly web apps.
- Regularly performed code reviews and refactoring, promoting best practices and improving code readability, testability, and maintainability across the codebase.
- Mentored junior developers, supporting their growth through code reviews, technical guidance, and pair programming.
- Participated in agile ceremonies using Jira and Confluence to manage project tasks, document decisions, and coordinate with cross-functional teams.
- Leveraged AWS services for deployment and scalability, and used Sentry to monitor and troubleshoot front-end issues in production.
- Collaborated with localisation teams using Crowdin to ensure a multilingual experience across the platform.
TypeScriptAngularStylusDjangoAWSInVisionJiraConfluenceGitGerritJenkinsTransifexZanata
Frontend Developer
FundedByMe
2016 July - 2018 December
Kharkiv, Ukraine
- Contributed to the migration of a Django template-based website to a modern Angular single-page application, improving performance, maintainability, and user experience.
- Participated in requirements gathering by working closely with product managers, designers, and stakeholders to define features and ensure alignment between business goals and technical solutions.
- Used Git and Gerrit for version control and code reviews, Jenkins for continuous integration and automated builds, and Jira and Confluence to manage tasks and document project progress.
- Worked with Transifex and Zanata to support internationalisation and localisation, enabling the product to serve a diverse user base.
- Provided mentorship to junior developers, helping improve code quality, onboarding processes, and team collaboration through knowledge sharing and code reviews.
- Contributed actively in an agile environment, taking part in sprint planning, stand-ups, and retrospectives to drive iterative improvements.
JavaScriptHTMLCSSBackboneReactNode.jsGulpGitSVNGerrit
Frontend Developer
EchoStar Corporation
2015 October - 2016 July
Kharkiv
- Developed responsive web applications using React and jQuery.
- Built web apps for satellite receiver set-top boxes, working within the constraints of a proprietary browser engine, optimising for limited processing power and unique rendering behaviours.
- Collaborated with stakeholders to refine product features and functional specifications.
- Contributed to interface design, focusing on creating intuitive and user-friendly user interfaces.
- Participated in code reviews and debugging to ensure high-quality deliverables.
HTML5CSS3JavaScriptjQueryAdobe Photoshop
Frontend Developer
MobiDev
2014 October - 2015 May
Kharkiv, Ukraine
- Built responsive, cross-browser websites by translating high-fidelity designs into semantic HTML5, CSS3, and JavaScript code. Ensured consistent layout across devices using mobile-first principle.
- Created and maintained style guides to document reusable UI components and visual patterns, streamlining development and making future updates easier and more consistent.
- Worked closely with UI/UX designers and back-end developers to bring designs to life, ensuring alignment with usability best practices and technical feasibility.
- Used Adobe Photoshop to extract design assets, tweak visuals, and collaborate with designers on layout adjustments.
HTML5CSS3JavaScriptBootstrapAdobe Photoshop
Frontend Developer
XPANN
2014 January - 2014 June
Kharkiv, Ukraine
- Contributed to the website redesign collaborating with the development team.
- Implemented responsive web pages by converting design mockups using HTML5, CSS3, JavaScript, and Bootstrap.
- Ensured cross-browser compatibility and consistent presentation across various devices and screen sizes through thorough testing and fine-tuning.
- Used Adobe Photoshop to extract and optimise design assets.
LESSJavascriptCoffeeScriptEvolus PencilCaccoJetbrains YoutrackFogCreekTrelloAtlassian ConfluenceSubversion VCS
QA engineer / UX engineer
Mascot International A/S
2012 February - 2013 June
Kharkiv, Ukraine
- Conducting and documenting stakeholder interviews.
- Prototyping on paper and using software.
- Finding the ways to advance product and business processes to being more efficient by means of technology.
- Improving and enhancing product by applying web usability best practices.
- Writing requirements for features and functionality.
- Writing and executing test cases and test scripts for manual testing of ASP.NET MVC single-page application (SPA).
- Creating, editing and modifying SPA templates (HTML, CSS, JS, CofeeScript).
- Testing cross-browser and cross-device compatibility for inconsistencies.
- Testing for compliance to specified standards such as accessibility standards in specific region or domain.
- Reviewing designs against usability heuristics.
MS SharePoint 2007/2010MS CRM 2004/2010MS SQL Server 2008 R2
QA engineer
Alfapeople Denmark A/S
2011 April - 2012 February
Ukraine, Kharkiv
- Executing, writing and maintaining test scripts for manual testing of C# .NET web applications built on top of MS SharePoint 2007/2010, MS CRM 2004/2010 applications.
- Writing and maintaining project documentation.
- Preparing user guides for clients.
ModernBillWHMCSCS CartUberSmithcPanelWHMKayako
Customer Support Supervisor
NameCheap, Inc
2008 September - 2011 April
Ukraine, Kharkiv
- Communication with clients as sales person and technical support person (chat and ticket system).
- Responsible for assisting clients with domain name registration, web hosting and SSL certificates services.
- Dealing with problematic clients.
- Processing legal inquiries and complaints.
- Mentoring and supervising co-workers as team lead.
- Writing and maintaining product knowledgebase.

Olena Savelieva

Senior Frontend Developer, Tech Lead

Senior Frontend Developer

Frontend Technical Lead

Frontend Technical Lead

Senior Frontend Developer

Frontend Developer

Frontend Developer

Frontend Developer

Frontend Developer

QA engineer / UX engineer

QA engineer

Customer Support Supervisor