The portfolio would be interesting for any IT specialist such as Researcher, Recruiter, HR, PM or Technical Specialist.
The portfolio consists of additional topics which are NOT included in my CV:
- About
- Project Feedbacks
- Project Challenges
- Rated Skills
- Leadership Experience
- Self-Education
- Project Changing
Having Java as a primary skill, I've been doing commercial development for 6 years so far. During this time I've come across different apps such as Backend, Cloud, Frontend, Desktop. Working on these apps, I've got considerable experience with Java 8-17, JavaEE, Spring, AWS, SQL, NoSQL, JavaFX, Git, Windows.
Regarding responsibilities, I'm familiar with all the main stages of engineering. Working on Technical Research, Software Design, Implementation, Testing, Deployment, I showed quite efficient work on the Full Cycle development. Achievements are 3 apps implemented from scratch and with 4 others I worked on support and extension.
Thanks to fluent English and good soft skills, I'm an efficient Team Player even in case of international teams. In fact, I've been communicating with foreign colleagues and stakeholders for 3 years already. I consider myself as a responsible person and also can take care about others. I have production experience of Team Leading and was a Mentor for education programs. In addition to team membership, I have more than 2 years of independent work as a Key Developer.
I'm always open to Feedback about my work. On each project, my professional and personal qualities met or even exceeded expectations. At the same time, I see the ways for self-improvement and continue working on my hard, soft, and leadership skills. Currently, I'm recognized as a Senior and for the future I plan to take Lead Software Engineer position.
The table shows you context around. Please, follow links to see actual Feedback pages:
| Date | Company | Feedback Link | Reviewers | Description |
|---|---|---|---|---|
| May 2024 | Global Logic |
Annual Performance Review | Project Manager (GlobalLogic) Project Director (GlobalLogic) |
As part of regular Performance Review |
| Sep 2023 | EPAM Systems |
Half-year Feedback Summary | Product Owner (customer) Team Lead (customer) Scrum Master (customer) Tech Lead (EPAM) |
Summing up the entire work path on a project |
| Mar 2023 | EPAM Systems |
Half-year Feedback Summary | Product Owner (customer) Scrum Master (customer) Delivery Manager (EPAM) |
As part of constant feedback process |
| Sep 2022 | EPAM Systems |
Half-year Feedback Summary | Product Owner (customer) Team Lead (customer) Scrum Master (customer) |
As part of constant feedback process |
| Jun 2022 | EPAM Systems |
Level-Up Feedbacks | Team Lead (EPAM) Tech Lead (EPAM) |
As part of Level-Up assessment preparation |
| Jun 2021 | EPAM Systems |
Half-year Feedback | Team Lead (EPAM) | As part of constant feedback process |
| Jan 2021 | EPAM Systems |
Quit Feedback | Developer (EPAM) | Summing up the entire work path on a project |
| Sep 2020 | RINANU* | Quit Feedback | Project Manager (RINANU) | Summing up the entire work path on a project |
*RINANU is Ukrainian Product Department that produces Radar Station Prototypes including scientific research, hardware and software implementation.
The table shows you context around. Please, follow links to see full Stories:
| Year | Company | Story Link | Major Points | Achievements |
|---|---|---|---|---|
| 2021 | EPAM Systems |
My first Cloud Development | POC, Refactoring, End-to-end Testing, Deployment Automation | Implemented and released AWS-based Microservice |
| 2021 | EPAM Systems |
My first App Improvement | Bug Fixing, Refactoring, Extension, Local Testing, Remote Debug, Knowledge Transfer | Improved and released AWS Lambda |
| 2020 | EPAM Systems |
My first project at EPAM | Requirements Clarification, Research, Development, Team Leading, Demo | Implemented Java Tool |
| 2019 | RINANU* | My first Complex App | Technologies Research, Requirements Clarification, Architecture, Development, Maintenance, Expansion, Integration Testing, Packaging, Cross-Platforming | Implemented complex Desktop app |
| 2018 | RINANU* | My first Commercial App | Technical Research | Implemented simple Desktop app |
*RINANU is Ukrainian Product Department that produces Radar Station Prototypes including scientific research, hardware and software implementation.
| Category | Skill | Level* | Project work |
|---|---|---|---|
| Core Languages | Java 8 | expert | 6 years |
| Java 9-17 | intermediate | 1 year | |
| C# | entry | 1 month | |
| C/C++ | entry | 6 months | |
| TypeScript | entry | 6 months | |
| JavaScript | entry | 2 month | |
| Kotlin | theoretical | ||
| Development Areas | Backend | advanced | 3 years |
| Desktop | advanced | 2 years | |
| Cloud | intermediate | 1.5 years | |
| Microservices | intermediate | 1.5 years | |
| REST API | intermediate | 1.5 years | |
| Monoliths | intermediate | 1 year | |
| Databases | intermediate | 1 year | |
| Fullstack | entry | 1 year | |
| Frontend | entry | 6 months | |
| Backend | Spring Core | advanced | 2 years |
| Spring Boot | intermediate | 1 year | |
| Java EE | intermediate | 1 year | |
| Spring Data | entry | 6 months | |
| Spring Web | entry | 6 months | |
| Kafka | entry | 4 months | |
| Databases | SQL | advanced | 2.5 years |
| OracleDB | intermediate | 1.5 years | |
| NoSQL | intermediate | 1 year | |
| PostgreSQL | intermediate | 6 months | |
| InfluxDB | entry | 6 months | |
| DynamoDB | entry | 3 months | |
| Hibernate | entry | 1 month | |
| Clouds | AWS Platform | intermediate | 1.5 years |
| AWS Java SDK | intermediate | 1 year | |
| AWS Lambda | intermediate | 1 year | |
| AWS DynamoDB | entry | 3 months | |
| AWS SES | entry | 2 months | |
| AWS SQS | entry | 2 months | |
| AWS SNS | entry | 1 month | |
| AWS CloudWatch | entry | 1 month | |
| AWS EC2 | entry | 1 month | |
| AWS S3 | entry | 1 month | |
| AWS ECS | theoretical | ||
| AWS EKS | theoretical | ||
| Frontend | JavaFX | advanced | 2 years |
| UI/UX | intermediate | 1.5 years | |
| 2D/3D graphics | intermediate | 1 year | |
| JSON/XML | intermediate | 1 year | |
| HTML/CSS | entry | 6 months | |
| AngularJS 2 | entry | 6 months | |
| Vue.js | entry | 2 months | |
| Testing | JUnit | advanced | 3 years |
| Postman | intermediate | 1 year | |
| JMockit | entry | 6 months | |
| Mockito | entry | 5 months | |
| JProfiler | entry | 1 month | |
| OpenTelemetry | entry | 1 month | |
| Jaeger | entry | 1 month | |
| CI/CD | Git | advanced | 3 years |
| GitLab | intermediate | 2 years | |
| JBoss | intermediate | 2 years | |
| Gradle | intermediate | 2 years | |
| Maven | intermediate | 1.5 years | |
| GitHub | intermediate | 8 months | |
| Docker | entry | 8 months | |
| Kubernetes | entry | 6 months | |
| Terraform | entry | 6 months | |
| Azure DevOps | entry | 6 months | |
| Software & Tools | Windows | advanced | 5.5 years |
| IntelliJ IDEA | advanced | 3.5 years | |
| Eclipse IDE | advanced | 2.5 years | |
| Jira | advanced | 2.5 years | |
| SQL Developer | intermediate | 2 years | |
| Command Line | intermediate | 2 years | |
| Confluence | intermediate | 2 years | |
| Linux | intermediate | 9 months | |
| Tilt Dev | intermediate | 6 months | |
| pgAdmin | entry | 4 months | |
| VS Code | entry | 4 months | |
| Node-RED | entry | 2 months | |
| GitHub Copilot | non-project | ||
| General | OOP | expert | 5 years |
| Clean Code | expert | 4 years | |
| Mathematics | expert | 3 years | |
| Design Patterns | advanced | 3 years | |
| Scrum | advanced | 2.5 years | |
| Product Development | advanced | 2.5 years | |
| Kanban | intermediate | 2 years | |
| Outstaffing | intermediate | 2 years | |
| Outsourcing | intermediate | 1.5 years | |
| Waterfall | intermediate | 1 year | |
| Multithreading | intermediate | 1 year | |
| Domains | Radar Stations | advanced | 2.5 years |
| Banking System | intermediate | 2 years | |
| Performance Analysis | intermediate | 1 year | |
| Asset Management | intermediate | 8 months |
*used next levels:
- theoretical or non-project - limited by self-education and pet project work. Able to work in slow pace with help of documentation and colleagues.
- entry - several months of project work with basic theoretical knowledge. Able to work in moderate pace with help of documentation and peers review.
- intermediate - about year of project work with good theoretical knowledge. Able to work in a regular pace independently.
- advanced - several years of project work with wide theoretical knowledge. Able to work in fast pace and ready to consult others.
- expert - several years of project work with wide and deep theoretical knowledge. Able to work in fast pace and free to consult others.
Cases where I organized and supported processes for work and education:
- Oct 2023. Knowledge Transfer: conducted 3 cross-team online meetings where presented technical details of our team implementations.
- Sep 2023. Onboarding: supported the developer to get started in our team.
- Oct 2021 - Oct 2023. Mentoring: provided regular support for the developer in our team.
- Oct 2020 - Dec 2020. Team Leading: held the position of Lead Developer in a team of 3 devs. In addition to development, I was in charge of work planning, meeting holding, development support.
- Sep 2023. Interviewing: conducted mock interviews to help EPAM colleagues get position on a project.
- Jul 2022 - Oct 2022. Mentoring: played a Mentor role in the EPAM educational program* RD Java Lab Summer 2022. Supported 5 students.
- Oct 2021 - Feb 2022. Mentoring: played a Mentor role in the EPAM educational program* RD Java Lab Autumn 2021. Supported 2 students.
- Sep 2016 - Feb 2018. Private Tutoring**: worked as a mathematics Teacher. Supported 12 students by conducting ~ 650 offline classes in total.
*educational program is pre-production activity that consists of theoretical lectures and practical tasks. During task completion each Mentee is assigned to specific Mentor. That time Mentor supports students by organizing one-to-one sessions to discuss task requirements and implementation way, answer questions, check progress, accept tasks. Also, there is offline support using chatting, regular code review and app local testing. Finally, Mentor provides feedback on the Mentees performance.
**private tutoring is support for students while they are studying at school or university. It includes help with homework, clarification of difficult points, exam preparation.
Working on my hard and soft skills, have next achievements so far:
| Completed | Name | Level | Efforts | Duration |
|---|---|---|---|---|
| Oct 2023 | IT Communication | B2/B2+ | 17 lessons | 2 months |
| Sep 2023 | Presenting and Public Speaking | B1+/B2/B2+ | 20 lessons | 3 months |
| Jul 2023 | Virtual Communication | B1+/B2/B2+ | 26 lessons | 4 months |
| Apr 2023 | Business Communication | B1+/B2 | 41 lessons | 7 months |
| Nov 2022 | IT Grammar | B1+/B2 | 17 lessons | 3 months |
| Jul 2022 | Small Talks | B1/B1+ | 8 lessons | 2 months |
| Jul 2022 | IT Grammar | A2+/B1 | 17 lessons | 4 months |
| May 2022 | Speaking Club | B1/B2/C1/C2 | 10 lessons | 3 months |
| Feb 2022 | Project Interviews | A2+/B1/B1+ | 10 lessons | 2 months |
| Dec 2021 | Breaking the Language Barrier | A2+/B1 | 11 lessons | 2 months |
| Oct 2021 | Business Communication | A2+/B1 | 40 lessons | 7 months |
| Completed | Name | Type | Efforts | Acceptance |
|---|---|---|---|---|
| Aug 2022 | CloudX Associate: AWS Developer | Educational program | 30 hours | Mentor review |
| Mar 2021 | CloudX: Foundations for Tech | Self-study course | 5 hours | Quiz |
| Sep 2021 | Becoming a Tech Mentor | Self-study course | 1.5 hours | Quiz |
| Jan 2021 | Getting Ready for Assessment | Self-study course | 1.5 hours | Quiz |
| Reading | Title | Authorship |
|---|---|---|
| 2023 | Designing Data-Intensive Applications | Martin Kleppmann |
| 2020 | Java XML and JSON: Document processing for Java SE | Jeff Friesen |
| 2019 | Kotlin | Head First |
| 2019 | Android Development | Head First |
| 2019 | Design Patterns | Head First |
| 2019 | Pro JavaFX 8: Building Desktop, Mobile, and Embedded Java Clients | Apress |
| 2018 | Learn JavaFX 8: Building User Experience and Interfaces | Kishori Sharan |
| 2018 | JavaFX 8: Introduction By Example | Apress |
| 2018 | Java: A Beginner's Guide | Herbert Schildt |
| 2018 | Effective Java | Joshua Bloch |
| 2018 | The C++ Programming Language | Bjarne Stroustrup |
| 2018 | The C Programming Language | Brian W.Kernighan Dennis M.Ritchie |
My thoughts and actual history of project changes:
- When is the right time to look for new opportunities?
- What to check to find the best fit?
- Why did I actually change projects?
Personally, I really like stable companies and projects where I can work for a long period, e.g. 2 years and more. Long term assignment is profitable for both: developer and company. For example, working on large enterprise apps, first you have to spend some time and resources to get to know the project. It's kinda an investment that later brings benefits such as satisfaction from your work, possibilities to make bigger impact and finally, bringing more value to the project. Even when building large app from scratch, you need to define the architecture and establish the development processes that is also beneficial only in long term run.
Such commitment also has the other side. That's great if you are always excited about work you do. However, at some projects, at some point (for example in 2 years of development), you may find yourself doing the same job day-to-day with no opportunity to grow. In case this can't be changed due to project limitations I would consider to switch to another project.
I realize importance and risks of such decision for myself, my current project and future project. In such cases, first of all, I talk about my concerns with project managers. If we can't find solution, then it's good idea to consider other projects to join. I try to find the best fit and finally accept the offer very carefully. Joining new project is weighted decision that means I commit for long term cooperation.
So, I have some points to check when applying for new projects:
- Why is position open?
- Project Domain: what is it about? what is outcome? which impact does it make?
- Tech Stack, e.g. key language, frameworks, versions, databases.
- Development Type, e.g. full cycle, support, migration.
- Development Responsibilities, e.g. design, research, implementation, delivery.
- What do regular tasks look like? Any specific work scope for newcomer? Any specific release dates? Any urgent deadlines?
- Development Methodology, e.g. Scrum. Any specific processes? How many regular meetings?
- How is the task formulated? How developer is involved in requirements clarification, testing and deployment?
- Project Team, e.g. size, kinds of specialists, presents of local and foreign colleagues.
- Interaction with customers and English-speaking colleagues.
- Is work laptop provided? Which OS, e.g. Windows, Linux, Mac.
- Project Tools, e.g. IDE, VCS, apps for chatting, online meetings, task tracking.
- Are there less experienced colleagues to play mentor role?
- Are there more experienced colleagues to ask for help?
- Work hours (time zone dependencies).
- General work tempo: Any constant pressure to be fast? Any lack of tasks or presence of complex processes, so it gets slow?
- Is there overtime work? If so, is it compensated?
- Is there activity tracker, e.g. mouse movement tracking, screen capture?
- Onboarding: Are there any flow and materials to help newcomer understand project? How much time allocated?
- Probation period: Is it present? How long does it take? In which period is it expected for newcomer to get started with regular pace?
- Project Stability: Will there be work in 1 year?
- Project Perspectives: Is there space to grow and take more complex tasks and next level responsibilities?
- Office, its location, workplace and benefits.
- Non-project activities, e.g. team-buildings, events, conferences, hackathons.
- Education support, sport compensation, health insurance.
- Are there any business trip? (especially interesting if it helps you meet your implementation in real life)
- Additional bonuses for good performance, successfully released features, resolving additional tasks asked by customer, providing better solution.
- Compensation Range for the position.
- Compensation Review: What to do to get it? How often? Regular or by asking? Which amount is it possible to have in 2 years?
| Dates | Company | Project | Leaving Reason |
|---|---|---|---|
| Oct 2021 - Oct 2023 | EPAM Systems |
Enterprise Web | Driven by Customer. As part of Cost Saving program, almost all EPAM employees were ramped down. As stated by the Customer Top Management, there were internal processes that are not related to EPAM performance. In fact, Customer Middle Management appreciated our contribution and it was a big loss for them. |
| Jan 2021 - Sep 2021 | EPAM Systems |
Cloud Pipeline | Driven by Customer. Our team successfully finished active phase of development by releasing stable version of app. Finally, we organized knowledge transfer and passed app to support team. |
| Oct 2020 - Dec 2020 | EPAM Systems |
Java Tool | Driven by Customer. It was short project with fixed term assignment. Our team successfully implemented pilot version of application and it was enough for the Customers at that moment. |
| Apr 2018 - Sep 2020 | RINANU* | OKO Desktop Client | Driven by me. Generally, it was kinda government department and I wanted to switch to work in an IT company. Leaving this project, I left successfully implemented beta version of app and did comprehensive knowledge transfer. |
*RINANU is Ukrainian Product Department that produces Radar Station Prototypes including scientific research, hardware and software implementation.
Some tips and approaches for programmers that I noticed and personally found useful:
- Work from office helps be more efficient and keep work-life balance. Also, it's more secure and company is less concerned about employee's doings.
- Refactoring helps fix bugs.
For example, in
Javait's nice to useStream API, but sometimes it's overcomplicated. When we have many invocations in a row, such code is not possible to understand. I would rather have plain Java implementation then complex constructions. This way, refactoring helped me several times to find an issue. - Writing documentation helps better understand what you've done,
structurise gained knowledge and release memory.
Once important details are covered, you can forget about it and easily switch to the next task.
Documenting is also right step when you learn something new. If you can describe point in you own written words, you understand it. - Adjusting the video playback speed helps learn quickly. I like watching tutorials, but sometimes it's very detailed and takes much time. Advice is quite simple but helped me a lot. Most recordings have good quality, so it's possible to speed up playback to 1.5 without losing understanding. With this my learning becomes faster and as a result, I feel comfortable to continue learning this way.