Jobs Fullstack

Company
The company specializes in lead generation within the iGaming domain, primarily through SEO-driven solutions. They work on long-term client projects and are currently expanding their internal development team.

Position Overview

We are looking for a Lead / Senior Full-Stack Engineer who operates at a true senior / lead level — not by years of experience, but by depth of expertise and ownership.

This role is for someone who:

• takes full ownership of complex systems
• makes architectural decisions
• builds scalable solutions (not just features)
• sets and raises engineering standards within the team

Location & Format

• Remote
• EU time zone required
• Full-time, long-term cooperation

Language Requirements

• English — required for daily communication
• Strong English is a significant advantage

Team & Projects

You will join a stable team working on long-term lead generation platforms.

This is not a task-execution role. We expect you to:

• take ownership of complex technical decisions
• improve architecture and system performance
• raise the overall engineering bar within the team

Tech Stack

• PHP (Symfony)
• WordPress
• JavaScript
• HTML / CSS

Key Requirements

WordPress (must-have, advanced level)

• Experience building complex, large-scale WordPress systems (not content websites)
• Hands-on experience with WordPress Multisite (production)
• Strong experience with custom plugin development, including:
  • OOP
  • Composer / autoloading
  • Typed properties
• Experience with:
  • custom database structures
  • custom caching strategies (not plugin-based)
  • advanced use of WP_Query
  • improving developer & admin tooling

👉 If your experience is mostly theme customization or plugin usage — this role is not a fit.

PHP (strong senior level required)

• 5+ years with modern PHP (8+)
• Ability to design abstractions, libraries, and internal frameworks
• Experience with:
  • phpcs / phpcbf
  • custom sniffs OR PHPParser / AST
  • reflection & introspection
  • DTOs, Value Objects, clean architecture principles

Frontend / CSS

• Strong modern CSS skills (must-have)
• Understanding of browser rendering, layout, and performance

Performance & Optimization (critical)

• Deep understanding of Core Web Vitals
• Real experience with performance optimization (not just tools/plugins)
• Ability to identify bottlenecks and design custom solutions

Mindset & Approach

We are looking for engineers who:

• think analytically and architecturally
• deeply understand systems, not just tasks
• challenge “working solutions” and improve them
• proactively raise engineering standards

👉 If you mainly execute tasks and rely on predefined solutions — this role is not a fit.

AI Usage

• AI is allowed, but must not be a dependency
• Strong preference for engineers with deep system understanding
• AI-generated communication is discouraged

Start Date

• ASAP

Job Summary
As a Software Engineer, you will review AI-generated code and compare it with how you would write the solution yourself. Your role will focus on reviewing AI-generated solutions, finding mistakes, and uncovering reasoning gaps.

We’re looking for a full-time team member who is interested in growing with the team and contributing to long-term projects.

Responsibilities

 

• Evaluate AI-generated code, technical solutions, and engineering approaches.
• Identify bugs, incorrect assumptions, architectural issues, and weak reasoning in AI responses.
• Test and evaluate agentic coding models designed to perform complex engineering tasks at a senior developer level.
• Compare AI-generated solutions against senior engineering standards and best practices.

Requirements

• 3-5 years of commercial experience as a Fullstack Developer/Software Developer.
• Strong Python (FastAPI/Django).
• Frontend: React, TypeScript
• Experience working with databases such as PostgreSQL/NoSQL or similar tools.
• Use AI tools (AI agents, Claude Code, Cursor, Codex or similar) in daily workflow.
• Experience working with existing codebases and unfamiliar repositories.
• Understanding of modern frontend tools: Vite, Tailwind CSS, Chart.js, and React Hooks. 
• Familiarity with Docker and CI/CD (GitHub Actions).
• Upper-Intermediate English (B2).

Bonus points:

• AI/LLM integration experience.
• Knowledge of Machine Learning concepts and algorithms.

This is not a traditional software development role. You will use your engineering expertise to analyze AI outputs, find issues in their solutions, and help train better AI systems.

A potential invitation to potential minds!

4K-Soft is People. People are most important to us. People are at the heart of every connection we build. Come and join 4K-Soft, where human minds come together to pave the way for the future. We offer a variety of full-time jobs, training programs and internships. Only imagine, how you can help our company and start your career with 4K-Soft!

We are looking for a Middle FullStack Web Developer.

What we expect from you:
English level: B2 or higher
Experience: 3+ years working with Node.js and React

We offer:

Competitive level of remuneration

Convenient work schedule, paid vacation and sick leaves

The opportunity to grow professionally by participating in the implementation of interesting and complex projects, as well as showing personal initiative.

We are building a digital orthodontics platform with interactive browser-based 3D tools and backend mesh-processing services.

This is a hybrid role combining native computational geometry in C++, browser-based 3D development with Three.js and TypeScript, full-stack development with Angular and Node.js, and deployment of geometry-processing workloads to AWS.

You will be able to take a 3D feature through its complete lifecycle: implement the geometry algorithm, expose it through a backend service, build the browser interaction, and deploy the complete workflow to production.

Important: this is not a 3D visualization-only position. The role requires hands-on experience with mesh manipulation, computational geometry, 3D mathematics, and geometry-quality validation.

You Are

• A Software Engineer with commercial experience building 3D, CAD, mesh-processing, medical 3D, 3D-printing, scientific visualization, or similar systems.
• Strong in modern C++17 or later, including memory management, performance profiling, native libraries, and dependency management.
• Strong in JavaScript/TypeScript and experienced with browser-based 3D development using Three.js or raw WebGL.
• Experienced with computational geometry and direct manipulation of triangle meshes.
• Familiar with mesh topology, normals, boundaries, connected components, non-manifold geometry, coordinate systems, units, and numerical tolerances.
• Have implemented or integrated mesh operations such as repair, remeshing, simplification, smoothing, cutting, Boolean operations, offsets, distance queries, collision/contact detection, or registration.
• Have practical experience with at least one geometry-processing library or SDK such as VTK, CGAL, Open3D, libigl, MeshLib, OpenMesh, or similar.
• Comfortable with the mathematics behind 3D systems, including vectors, matrices, transformations, projections, quaternions, linear algebra, and spatial queries.
• Familiar with spatial data structures and acceleration techniques such as BVH, octrees, or k-d trees.
• Experienced with Three.js concepts including BufferGeometry, materials, cameras, raycasting, object transforms, interaction tools, and rendering-performance optimization.
• Have practical experience with Angular and reactive application architecture using RxJS or equivalent patterns.
• Have backend experience with Node.js and Express or a comparable framework.
• Comfortable integrating native C++ processing with web services through a CLI, native library, binding, API, or containerized worker.
• Experienced with CMake, Linux, Docker, Git workflows, pull requests, and code review.
• Able to write automated tests for geometry code using fixtures, invariants, tolerance checks, and regression datasets.

• Able to investigate problems across the entire system—from incorrect geometry output to API integration, browser interaction, or cloud execution.

   

Will Be a Plus

• Experience with multiple geometry-processing libraries or commercial 3D SDKs.
• Experience with AWS services such as S3, SQS, Step Functions, ECS/Fargate, AWS Batch, Lambda, ECR, CloudWatch, and IAM.
• Experience designing asynchronous and long-running processing workflows.
• Experience with Infrastructure as Code using Terraform, AWS CDK, or CloudFormation.
• Experience with C++ bindings such as pybind11 or nanobind.
• Experience with Python, NumPy, trimesh, or similar geometry tooling.
• Experience with WebAssembly or compiling native C++ libraries for the browser using Emscripten.
• Experience with Web Workers, transferable buffers, SharedArrayBuffer, or moving CPU-intensive calculations outside the browser’s main thread.
• Experience with three-mesh-bvh, GLSL shaders, large-mesh rendering, or custom Three.js interaction tools.
• Experience evaluating third-party geometry SDKs, including benchmarks, licence restrictions, and headless deployment.
• Background in medtech, healthcare, dental CAD/CAM, scientific visualization, or 3D printing.

• Familiarity with AI-assisted development tools such as Cursor, Claude Code, or Codex.

   

What We Expect from You

• Own 3D features from geometry implementation through backend integration, browser tooling, and production deployment.
• Work directly with mesh data and geometry algorithms, not only with rendering and visual appearance.
• Define clear tolerances, invariants, validation rules, and quality checks for geometry operations.
• Identify cases where an operation cannot produce a reliable result and report them clearly.
• Make practical engineering decisions that help us deliver quickly without unnecessary overengineering.
• Proactively identify geometry-quality, rendering, performance, memory, and scalability issues.
• Maintain clear contracts between C++ processing, backend services, and browser-based 3D tools.
• Be comfortable working in an evolving product with changing priorities and early-stage ambiguity.
• Review, test, and validate AI-generated code before using it in production.

• Communicate effectively with domain experts, frontend engineers, backend engineers, and infrastructure engineers.

   

Responsibilities

• Build and improve native C++ mesh-processing tools and libraries.
• Implement and integrate computational geometry algorithms for processing and modifying complex 3D meshes.
• Build interactive browser-based 3D tools using Three.js and TypeScript.
• Implement Angular components, services, state management, and user workflows for 3D features.
• Develop Node.js/Express APIs that connect browser tools with native geometry-processing services.
• Define stable contracts for mesh formats, metadata, units, coordinate systems, transforms, inputs, outputs, and errors.
• Package C++ geometry operations as reliable headless Linux workers using Docker.
• Deploy geometry workers to appropriate AWS compute services and orchestrate them using Step Functions, queues, and object storage.
• Implement asynchronous job execution, progress reporting, retries, timeouts, failure handling, and structured error reporting.
• Optimize geometry-processing time, memory usage, output quality, browser rendering, and data transfer.
• Write unit, integration, end-to-end, and geometry-regression tests.
• Create representative mesh fixtures and tolerance-based quality checks.
• Investigate issues across C++, Node.js, Angular, Three.js, Docker, and AWS.
• Participate in technical design discussions, pull-request reviews, and engineering best practices.

• Use AI-assisted development tools responsibly to improve development speed and code quality.

   

What We Offer

• Work on an innovative product in the medical-tech and 3D geometry domain.
• High ownership and direct impact on product and technical decisions.
• The opportunity to work across computational geometry, browser 3D, backend systems, and cloud infrastructure.
• Flexible working hours within the European time zone.
• Fully remote, full-time, long-term cooperation.
• A fast-moving environment where strong engineers can influence the product and architecture.
• Company-paid AI development tools.
• Professional development support, including courses and certifications.
• 20 paid business days of vacation.
• 5 paid sick-leave days.
• Paid national holidays.

We’re looking for a Mid-Level Fullstack Software Engineer to help build and improve our products. You’ll work with a team to deliver reliable, scalable features, solve technical challenges, and contribute to a great user experience.

What you’ll do

• Develop and maintain features across our applications.
• Collaborate with engineers throughout design, development, testing, and release.
• Write clean, secure, maintainable code and contribute to code reviews.
• Help improve product usability and resolve technical issues.
• Build and test prototypes, then turn successful ideas into production features.

• Take part in planning and estimation, and help the team deliver work predictably.

   

What we’re looking for

• 3+ years of experience developing web applications.
• Strong software engineering fundamentals and experience building production software.
• Proficiency in at least one back-end technology, such as Node.js, Python, Rust, or .NET.
• Experience working with SQL and NoSQL databases
• Experience with unit and integration testing.
• Familiarity with version control and modern development workflows.
• A practical approach to solving problems and a willingness to learn new technologies.

Nice to have

• Experience with HTML, CSS, JavaScript, or TypeScript.
• Experience with React or Angular.
• Experience with CI/CD and Agile ways of working.
• Experience using AI tools to support software development, such as coding assistants, while reviewing and validating their output.

You’ll have room to take ownership of your work, learn from experienced engineers, and make a meaningful contribution to the product as it grows.

We are looking for an experienced Full-Stack Developer with strong backend expertise who is confident working with PHP/Laravel, databases, and Vue 3, and can independently take features from requirements through implementation to a QA-ready state.

The project is an actively evolving web platform with complex business logic, multiple integrations and APIs, and large volumes of data.

We are looking for an engineer who goes beyond simply writing working code and considers architecture, performance, scalability, and long-term maintainability when making technical decisions.

Backend — PHP / Laravel

Core stack:

• PHP / Laravel
• SQL / relational databases
• REST API
• JSON-RPC
• WebSocket

We expect:

• Strong commercial experience with PHP and Laravel
• Solid knowledge of modern PHP and Laravel, including recent language and framework features
• Good understanding of Laravel application architecture
• Strong experience with Eloquent and Query Builder
• Experience designing APIs and implementing complex business logic
• Understanding of queues, jobs, background processing, and caching
• Ability to identify and resolve backend performance bottlenecks
• Experience with error handling, logging, and diagnosing production issues

It is important that you understand not only how to implement something in Laravel, but also what happens at the application and database levels and how technical decisions affect performance and scalability.

Databases & Large Data

Working with databases is an important part of this role.

We expect strong SQL knowledge and practical experience working with large datasets.

You should be comfortable with:

• JOINs, GROUP BY, HAVING, subqueries, and aggregate functions
• Database transactions and locking
• Concurrent operations and race conditions
• Indexes and composite indexes
• Analyzing query execution plans with EXPLAIN
• Identifying and optimizing slow queries
• Preventing N+1 query problems
• Efficient filtering, sorting, and aggregation of large datasets
• Pagination and cursor-based processing
• Processing data in chunks and batches
• Bulk INSERT and UPDATE operations
• Processing large datasets without loading everything into application memory

You should be able to investigate why a query is slow, identify the actual bottleneck, and choose an appropriate optimization strategy.

We particularly value experience designing solutions that remain efficient as tables grow from thousands to millions of records.

A feature that produces correct results but generates hundreds of unnecessary database queries or significantly degrades as the amount of data grows is not considered a complete solution.

Frontend — Vue 3 / TypeScript

Core stack:

• Vue 3 / Composition API
• TypeScript
• Pinia
• Vue Router 4
• Vite
• SCSS
• Axios

APIs: REST, JSON-RPC, WebSocket

Testing: Vitest, Playwright

We expect:

• Commercial experience with Vue, JavaScript, and TypeScript
• Strong knowledge of Vue 3 and the Composition API
• Up-to-date knowledge of TypeScript, JavaScript, Vue, and the surrounding ecosystem
• Ability to build reusable and maintainable components
• Good understanding of frontend performance and performance trade-offs
• Strong attention to design fidelity and functional details
• Ability to independently integrate frontend functionality with APIs
• Proper handling of loading, error, and empty states

Engineering Approach

How you approach engineering problems is just as important to us as your knowledge of the technology stack.

We expect you to:

• Clarify requirements and ambiguities before starting implementation
• Raise blockers and potential issues early
• Think about architecture and code reusability
• Consider performance and future data growth when designing solutions
• Investigate problems independently and identify their root cause
• Test your own work before handing it over to QA
• Deliver features to QA in a complete and testable state
• Pay close attention to both functional requirements and UI details

We are not looking for someone who simply implements exactly what is written in a ticket without considering the broader context.

If you identify an unclear requirement, technical risk, performance concern, or potentially problematic implementation approach, we expect you to raise it and discuss it with the team.

DevOps

Deep DevOps expertise is not required.

However, you should:

• Understand fundamental DevOps concepts and workflows
• Be able to set up and run the project independently on your local machine
• Understand development, staging, and production environments
• Have a basic understanding of deployment workflows
• Be comfortable working with application and system logs
• Be able to communicate effectively with a professional DevOps engineer and understand technical explanations related to infrastructure and deployment

AI-Assisted Development

We actively use Claude and other AI-assisted development tools.

Using AI to improve development speed and productivity is encouraged, but you are expected to understand, review, and validate the code generated by AI.

This is particularly important when it comes to:

• Architecture
• SQL queries
• Performance
• Database query efficiency
• Race conditions
• Edge cases
• Security

AI should be used as an engineering tool, not as a substitute for engineering judgment.

The developer remains responsible for the correctness, performance, security, and maintainability of the final implementation.

Tools

• Git
• Figma
• Jira
• Slack
• Claude / AI-assisted development

Soft Skills

We are looking for someone who is:

• Proactive — raises questions, blockers, and ambiguities early
• Responsible — takes ownership of tasks and brings them to completion
• Collaborative — works effectively with another Full-Stack Developer, QA, Designer, and DevOps
• Detail-oriented — pays close attention to requirements and implementation details
• Comfortable receiving feedback and discussing technical decisions constructively
• Calm and respectful under pressure

Nice to Have

• Experience with high-load or data-intensive applications
• Experience working with database tables containing millions of records
• Practical experience with SQL performance optimization
• Experience optimizing APIs for large datasets
• Experience with queues and background processing
• Experience with WebSocket and real-time functionality
• Experience with unit and E2E testing

Who We Are Looking For

We are specifically looking for a Full-Stack Developer with strong backend expertise.

This is not a frontend position where you occasionally make backend changes, nor a backend position where you occasionally modify Vue components.

You should be confident working across PHP/Laravel, SQL, Vue, and TypeScript and be capable of independently implementing complete features — from data modeling, database queries, APIs, and business logic to the user interface.

We're looking for a Full-Stack PHP Developer to join a platform in the B2B sales and outbound space. You'll work across backend (Laravel, PostgreSQL) and frontend (Nuxt 3/Vue), continue building out the product, and contribute to new AI-powered functionality. 

Responsibilities: 

• Develop and maintain backend functionality on Laravel 12 and PostgreSQL 
• Build and extend frontend features with Nuxt 3/Vue 
• Design and implement new features powered by the Claude API 
• Work within an existing codebase: understand current architecture, improve it, and keep it consistent 
• Collaborate with the team on scope, priorities, and technical decisions 

Requirements: 

• 3+ years of commercial experience in full-stack development 
• Strong hands-on experience with PHP and Laravel 
• Solid experience with Vue.js and Nuxt 3 
• Experience with PostgreSQL: schema design, queries, performance 
• Comfortable joining and working in an existing production codebase 
• Upper-Intermediate level of English or higher 

Nice to Have: 

• Hands-on experience with LLM APIs (Claude, OpenAI, or similar) 
• Experience building AI-powered features in production: prompting, structured outputs, tool use 

Recruitment Process: 

1. HR Interview 
2. Tech & Final Interviews 
3. Job Offer 

We Offer: 

• Innovation Culture: Work in a team that actively experiments with AI and modern development approaches    
• Flexible Work: Remote work or a modern office in Kyiv   
• Generous Time Off: 20 paid vacation days + 15 sick leave days annually   
• Professional Growth: Compensation for courses, certifications, and learning resources   
• Cutting-Edge Tools: Access to premium AI tools (Cursor Pro, Сlaude Code, Codex, etc.) 

We are looking for a Mid-level Full-Stack Developer (3+ years of experience) to work on a modern web project using an up-to-date technology stack.

🧩 Responsibilities:

• Develop and maintain the backend using NestJS (Node.js)
• Work with MySQL databases via TypeORM
• Develop the frontend using Angular 21
• Integrate third-party services and APIs
• Write clean, maintainable, and scalable code
• Participate in code reviews and team-based development

• Work with Git (version control)

  
  🛠 Requirements:

• 3+ years of commercial experience in Full-Stack development
• Strong knowledge of TypeScript
• Experience with NestJS / Node.js
• Experience with TypeORM
• Hands-on experience with MySQL
• Experience developing with Angular (version 21 or a close equivalent)

• Confident use of Git

   

  ⭐ Nice to have:

• Experience working with the OpenAI API
• Experience using Docker
• Writing and maintaining automated tests with Playwright

🎯 We offer:

• Work on an interesting and technology-driven project
• A friendly team and comfortable communication
• Fully remote work format
• Competitive salary (depending on experience)

We are looking for a Fullstack Developer to join our team and work on two technology products focused on mobile traffic and attribution.

This role is a great fit for an engineer who wants to go beyond traditional backend/frontend development and work with high-load systems, serverless architecture, real-time event processing, and multiple third-party integrations.

What you'll work on

The first product is an install attribution system built on AWS. It processes clicks and installs in real time, identifies traffic sources, and distributes events to external systems, including trackers, MMPs, advertising platforms, and push services.

The second is a domain and traffic management platform built on top of Cloudflare Workers. It combines dynamic routing and high availability with a custom web interface for managing domains, workers, and configurations.

What you'll do

• Develop and maintain backend services using Node.js / TypeScript.
• Build and improve the web application using React + TypeScript.
• Design and develop serverless solutions using AWS Lambda and Step Functions.
• Work with event-driven architecture, SQS, Redis, and PostgreSQL.
• Develop and deploy Cloudflare Workers, working with KV, routing, dispatch namespaces, and the Cloudflare API.
• Improve the internal admin platform for managing domains, workers, and configurations.
• Build integrations with trackers and MMPs, including Keitaro, Binom, Affise, Tenjin, and AppsFlyer.
• Integrate advertising and event APIs such as Meta CAPI and TikTok Events.
• Improve system reliability through retries, idempotency, error handling, validation, alerting, and self-healing mechanisms.
• Participate in code reviews, technical decision-making, and feature delivery.

What we're looking for

• 3+ years of commercial experience with Node.js / TypeScript.
• Hands-on experience with React + TypeScript.
• Strong understanding of asynchronous programming.
• Experience working with external APIs, webhooks, and queues.
• Experience with AWS Lambda / Step Functions or similar serverless technologies.
• Production experience with PostgreSQL and Redis.
• Understanding of distributed systems concepts, including race conditions, retries, idempotency, and consistency.
• Solid experience with Git, CI/CD, and code review practices.

Nice to have

• Experience in AdTech, tracking, attribution, or mobile traffic.
• Understanding of mobile attribution concepts such as postbacks, deep links, and SKAdNetwork.
• Experience integrating Keitaro, Binom, Affise, Tenjin, or AppsFlyer.
• Experience with high-load systems and large-scale real-time event processing.
• Experience with Serverless Framework / Infrastructure as Code.
• Experience with observability tools such as Prometheus and Grafana.

Tech stack: Node.js · TypeScript · React · AWS Lambda · Step Functions · SQS · PostgreSQL · Redis · Cloudflare Workers · Serverless Framework

Job Summary
As a Software Engineer, you will work directly with AI coding models to identify weaknesses, debug incorrect outputs, and create stronger alternative solutions. Your main responsibility will be to evaluate AI-generated solutions, identify mistakes, uncover reasoning gaps.

Key Responsibilities

• Work with Frontier Labs, producing training data to train Al models. 
• Test and evaluate agentic coding models designed to perform complex engineering tasks at a senior developer level.
• Compare AI-generated solutions against senior engineering standards and best practices.

Requirements

• 3–4 years of hands-on experience as a Full Stack Developer on commercial projects, including B2B SaaS systems and data-heavy applications.
• Use AI tools (AI agents, Claude Code, Cursor, Codex or similar) in daily workflow.  
• Strong judgment across the full software lifecycle:
  • Reading a PRD and breaking it into Jira tickets
  • Estimating effort and scoping work
  • Architecture and design choices
  • Reviewing PRs
  • Debugging and recovering when blocked
• Strong proficiency with React.js and Node.js, with experience using Express.js or NestJS to build scalable backend systems that support complex business logic.
• Experience designing and integrating REST APIs. 

• Upper-Intermediate English (B2). 

   

Bonus:

• Computer Science or related education. 
• Python programming experience. 
• Strong understanding of algorithms and data structures. 

You will be part of building better AI systems by helping improve the quality, accuracy, and reliability of the answers they provide. If you want to use your engineering skills in a fast-growing AI field, this role is a strong opportunity to contribute to the future of AI-assisted development.

Hello! 
We are looking for a Senior Full Stack Engineer (Node.js/React) to join a team working with an international client in the renewable energy / green-tech sector.

Location: Ideally Lviv (hybrid) or Remote

About the project:

The client is one of the leading commercial rooftop solar developers in the US, building and operating distributed solar and storage infrastructure on commercial real estate — turning rooftops into clean energy assets. They partner with major real estate owners nationwide and have already deployed hundreds of megawatts of renewable energy projects, backed by over a billion dollars in project financing. This is one of the fastest-growing companies in the green energy space, which makes this a genuinely high-impact, forward-looking project — you'll be contributing to the infrastructure behind the clean energy transition, not just another internal business tool. The team also actively uses AI coding tools (Claude, Cursor) as part of the daily engineering workflow — AI-assisted development here isn't a buzzword, it's a real, everyday practice.

We are considering Senior engineers with 4+ years of solid, proven experience.
 

This is a great opportunity for:

• Engineers who want their work to have real-world impact in the renewable energy / green-tech space
• Developers who want to work daily with AI coding tools (Claude, Cursor) as a core part of the engineering process, not an experiment
• Full Stack Engineers who think beyond the ticket — who want to understand the "why" behind a task, engage directly with business users, and propose solutions, not just implement what's handed to them
• Engineers comfortable communicating directly with non-technical stakeholders and business users
  
  Required Skills
• 4+ years of solid, proven commercial experience with Node.js and React
• Practical experience with AI coding tools such as Claude, Cursor, or similar
• Strong communication skills, with experience working directly with business users

A "product engineer" mindset — someone who understands the purpose behind the work, picks up context quickly, and proactively suggests approaches rather than waiting to be assigned tasks

Will Be an Advantage

• Experience with Microsoft Azure
• Experience integrating with the Microsoft ecosystem (Microsoft Graph, Power Platform, Dynamics 365)

We are looking for a Middle/Senior Full-Stack Developer with strong Python/Django and SQL expertise to help develop and maintain a web application for migrating reporting functionality from Oracle APEX.

Our client is a leading Ukrainian bank undergoing significant digital transformation. The team is working on modernizing reporting solutions and migrating existing reporting functionality from Oracle APEX to a Python/Django-based web application. The role combines backend and frontend development with database analysis, reporting, dashboard development, and performance optimization.
 

Responsibilities:

• Analyze existing Oracle APEX reports, dashboards, SQL queries, and business logic.
• Develop and maintain backend functionality using Python and Django.
• Develop web interfaces using Django Templates, HTML, CSS, and JavaScript.
• Build interactive dashboards, tables, charts, and calculated metrics.
• Implement data filtering, search, sorting, grouping, and pagination.
• Develop report generation and export functionality in XLSX, CSV, and PDF formats.
• Migrate and implement user roles, authentication, authorization, and access control for reports and data.
• Analyze and optimize SQL queries and overall application performance.
• Connect Django applications to Oracle Database and work with Oracle SQL and PL/SQL.
• Validate migrated functionality and ensure data consistency between Oracle APEX and the Django application.
• Develop and integrate REST APIs, preferably using Django REST Framework.
• Document implemented functionality and support further development of the solution.

Requirements:

• Strong Python skills and hands-on experience developing web applications with Django.
• Commercial experience with Django backend and frontend development.
• Strong knowledge of Django ORM and experience optimizing database queries.
• Solid SQL skills and practical experience with Oracle Database.
• Good understanding of PL/SQL.
• Experience analyzing Oracle APEX applications, reports, dashboards, SQL queries, and business logic.
• Experience integrating Django with Oracle Database, preferably using python-oracledb.
• Experience developing interactive dashboards, tables, charts, filters, and calculated metrics.
• Strong HTML5, CSS3, and JavaScript skills.
• Experience implementing search, sorting, filtering, grouping, and pagination.
• Experience with data visualization libraries such as Chart.js, Apache ECharts, or similar.
• Experience generating and exporting reports in XLSX, CSV, and PDF formats.
• Understanding of authentication, authorization, role-based access control, and data access restrictions.
• Experience developing and integrating REST APIs.
• Experience optimizing web application performance and SQL queries for large datasets.
• Experience with Git.

Nice to have:

• Experience with Django REST Framework.
• Experience with PostgreSQL.
• Experience with Oracle APEX migration or modernization projects.
• Experience working with enterprise reporting or business intelligence applications.

We offer*:

• Flexible working format - remote, office-based or flexible
• A competitive salary and good compensation package
• Personalized career growth
• Professional development tools (mentorship program, tech talks and trainings, centers of excellence, and more)
• Active tech communities with regular knowledge sharing
• Education reimbursement
• Memorable anniversary presents
• Corporate events and team buildings
• Other location-specific benefits

*not applicable for freelancers

Our Customer:

Our client is a global technology company developing an advanced cloud platform for AI-powered voice communication. Their product enables organizations to build, integrate, and deploy intelligent voice services by combining modern AI technologies, large language models, and enterprise-grade communication infrastructure. The engineering team focuses on creating scalable, cloud-native SaaS solutions that process real-time interactions while maintaining high performance, reliability, and security.

Your tasks:

• Design and develop new product features across both backend and frontend components.
• Build scalable backend services using modern .NET technologies.
• Develop responsive Single Page Applications using the latest React ecosystem.
• Design and integrate REST and GraphQL APIs.
• Work with relational and NoSQL databases while ensuring data consistency and performance.
• Participate in designing microservices-based architecture and distributed systems.
• Collaborate with product managers, architects, and other engineers throughout the entire development lifecycle.
• Leverage AI-assisted development tools (such as Claude, GitHub Copilot, etc.) to improve productivity while maintaining full
• ownership and understanding of the implementation.
• Write clean, maintainable, and well-tested code following modern engineering best practices.
• Contribute to architecture discussions, code reviews, and continuous product improvements.

Required experience and skills:

• 3+ years of commercial experience in Full Stack development.
• Strong experience with modern C#, .NET Core, and ASP.NET Core.
• Solid hands-on experience with the latest versions of React, including Functional Components, Hooks, and modern state management.
• Experience building Single Page Applications (SPA).
• Strong knowledge of Entity Framework.
• Experience designing and developing microservices-based applications.
• Practical experience with REST APIs and GraphQL.
• Experience with SQL and NoSQL databases (SQL Server, PostgreSQL, MongoDB, or similar).
• Good understanding of asynchronous programming, distributed systems, and cloud-native application development.
• Experience using AI-assisted development tools (Claude, GitHub Copilot, or similar) as part of the software development workflow.
• Ability to explain architectural decisions, coding approaches, and engineering best practices independently, without relying solely on AI-generated code.
• Strong analytical thinking, problem-solving skills, and ownership mindset.
• Experience working in Agile development environments.
• Upper-Intermediate (B2) or higher level of English.

Would be a plus:

• Experience with Docker and CI/CD pipelines.
• Experience with Azure and Azure Kubernetes Service (AKS).
• Knowledge of cloud-native SaaS architecture.
• Experience with high-load or real-time communication systems.
• Familiarity with modern software architecture patterns and system design.
• Experience participating in technical design discussions and architectural decision-making.

Working conditions

• 5-day working week, 8-hour working day;
• Remote work.

Playtech‘s IMS Engagement Unit is looking for a self-motivated Java Fullstack Developer with strong attention to detail and excellent collaboration skills.  

Please note that this is a temporary position (Military Service Cover).

Your influential mission. You will... 

• Work with a complex codebase that includes multiple Java versions and various architectural patterns. 
• Maintain and update legacy while preserving functionality. 
• Develop new features based on business requirements. 
• Write comprehensive tests for new and old functionality. 
• Debug and fix reported issues across the system. 
• Perform root cause analysis for critical bugs. 
• Monitor and optimize system performance. 
• Conduct code reviews and maintain code quality standards. 

Components for success. You... 

• Approximately 3 years of experience as a Fullstack Developer or several years of experience in Java development. 
• Have a strong background in Java development and front-end development using React with TypeScript. 
• Possess strong expertise in application performance optimization and database query optimization. 
• Are proficient in modern software design patterns and best practices to create scalable, maintainable, and high-performing applications. 
• Have experience with performance monitoring tools and profiling techniques. 
• Have experience in maintaining and modernizing legacy systems. 
• Are knowledgeable in Hibernate, JDBC, MariaDB, Kafka, Docker, Maven. 
• Understand GIT flow (pull requests, branches, etc.). 
• Are skilled with front-end tools and technologies: TypeScript, React, Redux, ES2020, HTML5, SCSS. 
• Have experience with MaterialUI, Webpack, Jest. 
• Excel in collaboration and teamwork, are self-motivated, and pay attention to detail. 

Thrive in a culture that values...  

• Technical excellence and engineering ownership.
• Initiative-taking and confident decision-making.
• Strong team environment and the ability work with the most recent market-leading technologies.
• Initiative-taking and confident approach at the workplace.
• Global scope and inclusive working environment where you can engage with diverse teams and perspectives.
• Constant learning and development opportunities and professional growth programs.
• Active lifestyle and mental well-being, supported through sports classes, master classes, and monthly well-being activities.
• Medical insurance.
• Paid vacation days, sick leaves and national holidays.
• Fully-equipped cosy office space located in the city centre (Gulliver, “Palats Sportu” metro station)

IMS ENGAGEMENT UNIT 

The award-winning IMS (Information Management System) is the industry’s most compelling player management system and the power behind Playtech's entire product portfolio, providing the tools needed to run and manage every aspect of our online gaming operations.  Our team focuses on the development of Player Journey - a powerful, real-time platform automation tool that empowers organizations to design their players’ experiences and streamline operational workflows through personalized journeys. Whether the goal is to encourage newly signed-up players to deposit, re-engage lapsed players, or intervene to reduce the risk of gambling-related harm, Player Journey is a fast and reliable tool. By joining our team, you will have the ability to make a significant impact by creating balance and uniting the front-end and back-end functions. You'll work with the latest technologies on a constantly growing and advancing product. This stable opportunity offers you the chance to contribute to one of the top applications within the engagement unit. 

Playtech is an equal opportunities employer. Our mission is to welcome everyone and create inclusive teams. We celebrate differences and encourage everyone to join us and be themselves at work.

What we are building
A data product that maps gambling regulation across more than 200 jurisdictions: which markets are open, who licenses operators, how they are taxed, what the advertising and player-protection rules are, and how all of it changes. Today it is a public, content-heavy site with strong organic traffic. Behind it sits a research database, a CMS for editors, and a monitoring system that reads regulators, gazettes and parliaments every day and turns what it finds into alerts and, increasingly, into corrections on the pages themselves.
Two things are changing. The front end is getting a full redesign with a product designer who has just joined. And the product is moving from a public reference to a paid one: user accounts, reports people can buy and find in their account, and a back office to run it. None of that exists yet. You would build it.

What you would own
 

• The web application. Next.js and TypeScript. Implement the redesign with the designer, keep the site fast and indexable, and later add accounts, authentication, payments and purchasable reports.
• The data layer. Several SQLite stores with a strict one-way flow from canonical data to mirrors, validation gates that refuse silent data loss, and scripts that apply researched corrections. You would keep these aligned and extend them as the product grows.
• The monitoring pipeline. Python services on a Linux server: crawlers for regulator sites, gazettes and parliaments, a matching layer, model-based vetting, and a Telegram bot the team uses to approve findings. You would make it catch more, post less noise, and land approved changes on the site.
• AI in the loop. We use models to build and to vet. You would design the pipelines that call them with fixed schemas, verify their output against the source, and treat everything they return as a claim until checked.
• Operations. One server, systemd, our own deploy script with rollback, continuous database replication, Cloudflare in front. Deploys must not break the live site, and the person who owns the code owns that too.
• The back office. Once accounts and reports exist, the tooling for the team to manage customers, content and data without touching the database by hand.
   

What we need from you
 

• Senior experience shipping and running production web applications end to end.
• Strong TypeScript and React. Next.js specifically, or the willingness to be fluent in it within weeks.
• Comfortable in Python for scripts, crawlers and services. Most of the monitoring code is Python and you will inherit it.
• Solid SQL and a habit of validating data rather than trusting it. Experience with SQLite is a plus; the discipline matters more than the engine.
• Linux server operations: systemd, deploys, backups, reading logs before guessing.
• Experience integrating LLMs into a pipeline with structured outputs, and a clear view of why model output is data, not instruction.
• A verification mindset. This product is only worth anything if the facts on it are right. You read the primary source, you check the figure, you say when you are not sure.
• Clear written communication. Most of our coordination is asynchronous and in writing.
   

Nice to have
 

• Technical SEO experience. The site lives on organic search.
• Auth, payments and subscription systems built from scratch.
• Scraping hostile or JavaScript-heavy sites, and knowing when to stop and look for an API instead.
• Interest in regulation, compliance or legal data. You do not need to know gambling law; you need to care whether a statute citation is real.
   

How we work

Small team, direct communication, decisions written down with the reason attached. Nothing in the current architecture is sacred: it reflects choices made along the way, and if you see a better direction for the code, the data layer or how we run things, we want that conversation. AI writes a lot of our code; your judgement decides what ships.