Ekaterina Pupykina

Backend • Senior • Management: 1-2 years (1-5 people) • 27 years • Atyrau, Kazakhstan • UTC+05:00 • Fully remote • Work permits: Kazakhstan • Citizenship: Kazakhstan • English: B2 • Available now

QA Engineer

Management: 1-2 years (1-5 people)

Python

SQL

TypeScript

Security & Auth: 5/10

API Design: 4/10

Data Layer & Database: 4/10

Active 6 days ago

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Overview

Technical skills

Timeline

Roles

Overview

Frontend / Web app engineer (approximately mid-career) focused on collaborative personal-finance tooling with a strong practical strength in robust import and server-side data processing for financial statements. The strongest proven skill is parsing and normalizing heterogeneous bank/export data and secure server mutations, demonstrated by the import parsing modules (src/features/imports/*.ts) and typed server actions (src/app/goals/[goalId]/actions.ts). The public code does not show advanced client-side state machines, explicit request cancellation/optimistic rollback logic, or a large suite of UI component tests for the React layer.

Phone

Technical skills

Languages

Python

SQL

TypeScript

DevOps

GitHub

Git

VMWare

Windows Server

DNS

Frontend

React.js

Next.js

Tailwind CSS

Zod

Other

Active Directory

Unity

ShaderLab

PostgreSQL

Linux

Windows

Rest API

Postman

Supabase

Game Dev

Chrome DevTools

Charles Proxy

TestRail

Timeline

University of the People

Bachelor's Degree • Computer Science

2028 Pasadena, California

Technical Support Specialist • Middle

Technoservice Group LLP • Full-Time

Apr 2024 to Mar 2026 1 Year 11 Months Atyrau In office

Handled software, network, and infrastructure incident triage for end users across workstations and virtual/physical server environments. Investigated root causes and documented resolutions for issues affecting production services and databases (including 1C). Administered Windows Server, VMware, Active Directory, DNS, and backups to maintain availability, storage/RAM allocation, and a working IT knowledge base.

Active Directory

DNS

Windows Server

VMWare

Technical Department Coordinator (additional role) • Middle

Technoservice Group LLP • Full-Time

Jan 2025 to Mar 2026 1 Year 2 Months Atyrau In office

Coordinated multiple concurrent IT and engineering projects and managed day-to-day collaboration with internal staff and contractors. Clarified customer requirements, tracked priorities and dependencies, and maintained project status in Bitrix24 and ClickUp. Tested a Unity-based interactive museum spanning VR, touch interfaces, projection, and motion-capture, isolating software and hardware integration defects and producing reproducible bug findings.

Bitrix24

ClickUp

Unity

Mobile Game QA Tester (test assignment) • Middle

G5 Games • Full-Time

Jan 2023 to Present In office

Functionally tested a mobile game on iPhone (iOS 17), focusing on identifying failing scenarios and UI defects. Created multiple test cases and reported issues with evidence and expected behavior to support scenario validation by the development team.

Senior Backend Developer Confidence: Medium API Engineer

A Senior-level API engineer focused on backend services for personal finance and invoicing with strong input validation and domain parsing logic. The most proven skill is robust financial data import and normalization as implemented in src/features/imports/normalize.ts and src/features/imports/pdf-normalize.ts. There is limited public evidence of cross-service transaction design, advanced operational tooling such as retries/backoff, and explicit migration history or comprehensive observability plumbing.

API Design

4/10

How well APIs are designed

API surface is consistent within the Next.js server actions and uses structured error codes and redirects, but lacks explicit API versioning, idempotency headers, or documented paginated contracts for public HTTP APIs.

Evidence

bubaleh1337/vmeste-app/src/app/goals/[goalId]/actions.ts: numerous server actions using fail() for consistent error codes and revalidatePath for cache invalidation bubaleh1337/vmeste-app/src/app/actions.ts: createGoalAction / updateDisplayNameAction signatures for server-side actions bubaleh1337/vmeste-app/src/app/api/imports/commit/route.ts: POST route (server API endpoint present)

Data Layer & Database

4/10

Working with databases

Solid data-layer practices with read views, RPCs and careful use of typed BigInt amounts and upserts, but no visible migration/history chain or explicit transaction boundaries in the shown files.

Evidence

bubaleh1337/vmeste-app/src/server/goals/repository.ts: uses goals_read, savings_transactions_read, expenses_read, RPC calls and upsert/onConflict patterns bubaleh1337/vmeste-app/src/app/goals/[goalId]/actions.ts: calls to supabase.from(...).insert/update and .rpc('create_goal_invitation') bubaleh1337/vmeste-app/supabase/tests/README.md: mentions pgTAP database tests and RLS testing (test strategy exists)

Scalability & Performance

3/10

Handling load and speed

Some attention to performance and parallelization (Promise.all, cache revalidation) and limits on import size, but no advanced caching invalidation strategy, async job/queue decoupling or load-testing artifacts shown.

Evidence

bubaleh1337/vmeste-app/src/server/goals/repository.ts: parallel DB queries via Promise.all to reduce latency bubaleh1337/vmeste-app/src/features/imports/normalize.ts: IMPORT_MAX_FILE_BYTES and IMPORT_MAX_DATA_ROWS limits for import performance and safety bubaleh1337/vmeste-app/src/app/goals/[goalId]/actions.ts: revalidatePath used after state changes to maintain cache freshness

System Architecture

4/10

Overall system structure

Clear module separation between features, lib and server layers and demo vs production modes, showing deliberate architecture choices, but this is a single monolith web app rather than a multi-service distributed system.

Evidence

bubaleh1337/vmeste-app/src/features/*: domain-specific feature modules for imports, savings, expenses, demo repository bubaleh1337/vmeste-app/src/lib/*: separated libraries for fx, money, supabase client and i18n bubaleh1337/vmeste-app/src/server/goals/repository.ts: service-layer repository that composes lib and feature code into cohesive responses

Security & Auth

5/10

Protecting data and access

Good input boundary security and auth checks with server-side claim validation, Zod validation for user inputs, token hashing for invitations and masking strategies for financial identifiers, though secret and dependency-audit hygiene is not visible for scoring.

Evidence

bubaleh1337/vmeste-app/src/app/goals/[goalId]/actions.ts: authenticated() function calling supabase.auth.getClaims and early redirect when unauthenticated bubaleh1337/vmeste-app/src/app/goals/[goalId]/actions.ts: createInvitationAction hashes token with sha256 before RPC bubaleh1337/vmeste-app/src/features/imports/normalize.ts: maskProbableFinancialNumbers and accountHintFromText to avoid leaking raw financial identifiers

Reliability & Observability

3/10

Stability and monitoring

Reasonable error handling and some test files exist, plus cache revalidation usage, but limited evidence of retries/backoff, circuit breakers, timeouts, structured logging, or telemetry/alerting configuration.

Evidence

bubaleh1337/vmeste-app/src/app/goals/[goalId]/actions.ts: consistent fail(...) handling and revalidatePath calls after updates bubaleh1337/vmeste-app/src/features/**/*.test.ts: presence of unit tests for analytics and filters bubaleh1337/vmeste-app/supabase/tests/README.md: documented DB testing approach for RLS and high-risk cases

Expertise

Node.js• Middle

Python• Middle

Microservices & API Architecture• Middle

Industries

Financial Services• Senior

Technologies

Python• since 2023 • Senior

Rest API

Recommendations

Develop backend APIs and server-side logic for fintech or personal-finance web applications, including importers and reconciliation pipelines.
Implement data-import, parsing and normalization services that require careful locale/currency handling and duplicate-protection logic.
Build Next.js edge/back-end integrations with Supabase or similar hosted DBs and design secure invitation/auth flows and RLS test coverage.
Prototype automation integrations (Telegram bots, document generation) that combine Python tooling with backend services.

Repositories

The developer's experience in this domain has been verified based on AI analysis of the following repositories:

bubaleh1337 vmeste-app telegram-invoice-bot-architecture

Senior Frontend Developer Confidence: High App Engineer

UI Component Architecture

3/10

How interface parts are built

Component-level UI architecture is minimal in analyzed human-authored files; styling is well organized but there are few custom React component implementations visible to judge composition and hook design.

Evidence

bubaleh1337/vmeste-app: src/app/globals.css - global design tokens and utility layout bubaleh1337/vmeste-app: src/app/goals/[goalId]/actions.ts - server actions used by UI routes (shows where components call into server logic)

Responsive & Cross-browser

6/10

Works on all screens and browsers

Responsive design and cross-browser considerations are explicit in the stylesheet using fluid type, media queries, safe-area handling and reduced-motion support.

Evidence

bubaleh1337/vmeste-app: src/app/globals.css - use of clamp(), multiple media queries and safe-area-inset handling bubaleh1337/vmeste-app: src/app/globals.css - prefers-reduced-motion handling and focus-visible styles

Performance Optimization

5/10

Speed of the interface

Practical performance awareness is present: limits on import sizes/rows, careful parsing to avoid modern runtime incompatibilities, and parallelized server queries; no explicit RUM/bundle analysis artifacts were found.

Evidence

bubaleh1337/vmeste-app: src/features/imports/normalize.ts - IMPORT_MAX_FILE_BYTES and IMPORT_MAX_DATA_ROWS limits and efficient parsing bubaleh1337/vmeste-app: src/server/goals/repository.ts - use of Promise.all to parallelize DB reads and early short-circuits for FX conversion

Accessibility & Semantics

6/10

Usable for everyone

Accessibility and semantics are considered in CSS (focus-visible, skip-link, visually-hidden utilities, reduced motion) and many UI states are styled for keyboard focus.

Evidence

bubaleh1337/vmeste-app: src/app/globals.css - focus-visible rules and skip-link implementation bubaleh1337/vmeste-app: src/app/globals.css - visually-hidden-file class and reduced-motion media query

State Management & Data Flow

5/10

Managing data in the app

Server-state and data flow are disciplined: zod validation on server actions, guarded auth checks, revalidation after mutations and careful DB RPC usage; there is no evidence of advanced client-side state machines, request cancellation or optimistic update rollback logic.

Evidence

bubaleh1337/vmeste-app: src/app/goals/[goalId]/actions.ts - zod validation, authenticated() guard, revalidatePath() after writes bubaleh1337/vmeste-app: src/server/goals/repository.ts - repository functions with typed transforms and FX conversion guarded by needsFx

UX & Visual Polish

6/10

Look and feel quality

UX polish is strong in the CSS: loading shimmer skeletons, empty states, progressive disclosure and well-structured layout tokens; work demonstrates attention to perceived performance and mobile ergonomics.

Evidence

bubaleh1337/vmeste-app: src/app/globals.css - loading-shimmer, empty-state, progress-track and many tailored UI states bubaleh1337/vmeste-app: src/app/globals.css - mobile-specific navigation, bottom-nav and safe-area handling

Expertise

React• Middle

PWA & Web APIs• Middle

Modern Web Frameworks• Middle

Industries

Financial Services• Middle

Technologies

TypeScript• Senior

Tailwind CSS

Next.js

React.js

Zod

UI• mentioned only

Vercel• mentioned only

Recommendations

Lead development of collaborative personal-finance or fintech web apps that require robust statement import pipelines and server-side validation.
Build Next.js server-action driven features and PWA web API endpoints that require secure database RPCs and careful input normalization.
Develop backend-integrated UI features where careful parsing, currency handling and domain validation are required (imports, reconciliation, FX-aware analytics).
Work on cross-browser responsive UI polish and accessibility improvements informed by existing design tokens and global styles.

Repositories

The developer's experience in this domain has been verified based on AI analysis of the following repositories:

bubaleh1337 vmeste-app qa-portfolio

Middle Game Developer Confidence: Medium Engine & Graphics Engineer

An engine graphics engineer (Middle) focused on real-time shader work and Unity rendering integration with a clear strength in authoring and adapting distance-field text shaders. The strongest proven skill is custom TextMeshPro distance-field and mobile-optimized shaders, specifically Assets/TextMesh Pro/Shaders/TMP_SDF.shader and related mobile variants. There is little to no human-authored evidence in the analyzed files of end-to-end gameplay systems, netcode, CI pipelines, or designer-facing editor tooling.

Gameplay Systems & Mechanics

How game logic works

Not evidenced in public code

Graphics & Rendering

6/10

Drawing game visuals

Multiple non-trivial, hand-edited TextMeshPro distance-field shaders and mobile variants demonstrate concrete shader programming, SDF handling, multi-pass and mobile render-path trade-offs.

Evidence

retro-fps-vertical-slice/Assets/TextMesh Pro/Shaders/TMP_SDF.shader

retro-fps-vertical-slice/Assets/TextMesh Pro/Shaders/TMP_SDF-Mobile-2-Pass.shader

retro-fps-vertical-slice/Assets/TextMesh Pro/Shaders/TMP_SDF SSD.shader

Physics & Math

2/10

Game physics and math

Only basic physics/math artifacts are present via Unity scene YAML (colliders, MeshCollider, NavMesh settings); no evidence of custom integrators, spatial partitioning or deterministic simulation.

Evidence

retro-fps-vertical-slice/Assets/_Recovery/0.unity - NavMeshSettings and MeshCollider entries

retro-fps-vertical-slice/Assets/_Recovery/0.unity - multiple BoxCollider GameObjects

Engine Proficiency

3/10

Skill with the game engine

Shows practical Unity engine proficiency around rendering integration and project layout (custom shaders placed under TextMesh Pro shaders, scene assets); lacks evidence of custom editor tooling, importers or advanced scene management in the human-authored set.

Evidence

retro-fps-vertical-slice/Assets/TextMesh Pro/Shaders/TMP_SDF.shader - CustomEditor reference to TMPro.EditorUtilities.TMP_SDFShaderGUI

retro-fps-vertical-slice/Assets/_Recovery/0.unity - GameObject entries (GameBootstrap)

Performance & Frame Budget

4/10

Keeping the game smooth

Performance-aware shader variants and mobile-specific optimizations are present (simplified mobile SDF, 2-pass mobile shader, explicit pixelSize/ddx/ddy usage), indicating frame-budget thinking for text rendering, but there are no profiler captures or measured before/after metrics.

Evidence

retro-fps-vertical-slice/Assets/TextMesh Pro/Shaders/TMP_SDF-Mobile-2-Pass.shader - 'Simplified SDF' mobile comment and two-pass approach

retro-fps-vertical-slice/Assets/TextMesh Pro/Shaders/TMP_SDF SSD.shader - use of ddx/ddy and pixelSize calculations

Content Pipeline & Tooling

1/10

Tools for game content

Minimal content-pipeline and tooling artifacts in analyzed human-authored files; shader CustomEditor hooks exist but no author-created editor scripts or CI/pipeline automation were present in the human-authored bucket.

Evidence

retro-fps-vertical-slice/Assets/TextMesh Pro/Shaders/TMP_SDF.shader - CustomEditor declaration

retro-fps-vertical-slice/Assets/_Recovery/0.unity - scene YAML (no editor scripts present in human-authored files)

Expertise

Graphics & Rendering• Middle

Industries

Gaming• Middle

Technologies

Game Dev

C#• since 2023 • Middle

Unity• since 2025

ShaderLab

Unity• mentioned only

Recommendations

Lead or contribute to shader and UI text rendering tasks, especially SDF/font rendering and mobile optimizations.
Ship renderer-side polish and mobile frame-budget work such as batching, draw-call reduction and mobile shader LODs leveraging the existing mobile shader variants.
Build designer-facing shader tuning tools or small custom editor windows to expose the SDF shader parameters for rapid iteration.

Repositories

The developer's experience in this domain has been verified based on AI analysis of the following repositories:

retro-fps-vertical-slice unity-swipe-courier-mobile