Kozak Agency

We are looking for a strong Flutter Developer (Middle+ / Senior level) to join a fintech project focused on building a banking application from scratch.

The project is at an early stage, so we need an engineer who can take ownership of the mobile direction, help define the architecture, and build a scalable and maintainable application foundation.

This role is ideal for someone who enjoys building products from the ground up and is comfortable making technical decisions in collaboration with the team.
 

Requirements:

• Strong commercial experience with Flutter and Dart
• Experience building mobile applications from scratch
• Solid understanding of mobile application architecture
• Experience designing scalable and maintainable solutions
• Understanding of clean architecture principles and state management approaches
• Experience integrating REST APIs
• Knowledge of application performance optimization and security best practices
• Experience publishing and maintaining applications in App Store / Google Play
• English level: B2+
   

Nice to have:

• Experience in fintech or banking-related projects
• Experience with CI/CD for mobile applications
• Knowledge of Firebase or other cloud services
   

Responsibilities:

• Build and develop a banking mobile application from scratch
• Design and implement application architecture
• Make technical decisions regarding app scalability and maintainability
• Collaborate with backend and product teams
• Develop new features and core functionality
• Ensure high application performance and stability
• Participate in code reviews and technical discussions

We are looking for a Senior .NET MAUI Engineer to join a long-term project focused on stabilizing and improving a mobile application migrated from Xamarin.

The application already exists, but requires significant cleanup, optimization, bug fixing, and completion of missing functionality after migration to .NET MAUI.

We are searching for a strong, self-driven engineer who is comfortable taking ownership of technical decisions and working independently in a fast-paced environment.
 

Requirements:

• Strong commercial experience with .NET / C#
• Solid hands-on experience with .NET MAUI
• Previous experience with Xamarin and migration to .NET MAUI
• Experience with mobile application architecture and performance optimization
• Ability to troubleshoot and stabilize complex legacy codebases
• Understanding of app lifecycle, debugging, and release processes
• English level: B2+
   

Responsibilities:

• Stabilize and improve the existing mobile application
• Refactor and optimize legacy Xamarin-related code
• Complete unfinished migration tasks to .NET MAUI
• Fix bugs and improve app performance
• Collaborate with the team on technical improvements and architecture decisions
• Ensure application reliability and maintainability
   

Project Details:

• Full-time involvement
• Remote
• Initial duration: 3–6 months with strong extension potential

We are currently looking for experienced 6x Senior Kubernetes Platform Engineers to join a strategic SAP-related transformation project focused on large-scale platform orchestration and multi-cluster ecosystem integration. 

 

• Number of Positions: 6
• Start Date: 01 July 2026
• Location: Remote
• Preferred Base Location: Germany, Poland, or Nearshore Europe
• Language Requirement: English (Mandatory)

This is an exciting opportunity to work on complex cloud-native environments involving Kubernetes and non-Kubernetes platforms within an enterprise-grade infrastructure landscape.

Project Scope
The role is part of a joint SAP initiative focused on:

• Platform orchestration
• Multi-cluster management
• Integration between Kubernetes and non-Kubernetes platforms (Cloud Foundry, LSS)
• Workflow orchestration and lifecycle automation across distributed systems

Required Skills & Experience

• 8+ years of overall IT experience
• Advanced expertise in Kubernetes (platform engineering level, beyond standard deployments)
• Strong backend engineering and programming skills
• SAP BTP / Gardener / MCP
• Experience with APIs, integrations, and system logic

Experience with:

• Platform orchestration layers / platform mesh
• Pipeline orchestration (beyond pipeline usage)
• Hands-on experience with:
• Multi-system / multi-cluster environments
• Orchestration and lifecycle management
• System integration between Kubernetes and external platforms

Solid understanding of:

• Distributed systems
• State synchronization
• Workflow orchestration

Nice to Have

• Cloud Foundry
• LSS / Concourse

We’re preferably looking for someone based in Asia, or someone who has already relocated there from Europe.

We’re also open to candidates in Europe who are comfortable working night shifts due to the timezone overlap requirements with the client in Australia.

Right now we need someone ASAP for a full-time 2-week discovery phase. The key requirement is an early start and at least partial overlap with the client’s working hours.

After the discovery phase, the plan is to continue with a long-term full-time engagement, ideally with the same engineer staying on the project. However, the long-term setup will require working mostly within the Australian timezone (~1–2 AM to 11–12 PM Kyiv time).

So we’re looking either for someone who is comfortable with a night schedule, or for a candidate located in a more suitable timezone (Thailand, Bali, etc.).

Must have

Python - 5+ years

Django and Django Ninja - 5+ years

AWS - 3+ years (last projects)

Client is from Australia - early start required for overlap with the team
Starting from 7:00 AM Kyiv time (the more overlap, the better)
English level B2 and higher (communication with native speakers)
Start date: June 1

Australian client with an existing web platform focused on memberships, payments, and administration workflows. The platform is already live and built with Python/Django on AWS.

The project includes ongoing platform development, stabilization, and gradual migration from a legacy system into the modern architecture. Looking for a Python Engineer to support discovery, improvements, integrations, and migration-related initiatives.

Main stack:
• Python
• Django
• AWS
• SQL

Responsibilities:
• support and improve existing platform
• participate in discovery/migration activities
• work with integrations and legacy business logic
• contribute to platform stability and technical improvements



 

Must have:

• "Full-Stack Product Development / MVP SaaS — 5+ years
• React / Next.js or similar, backend API, auth, payments/subscriptions, web app architecture, fast MVP delivery.
• AI / LLM Integration & AI Workflow Automation — 2+ years
• OpenAI / Claude / Gemini APIs, prompt engineering, multi-step AI workflows, AI chatbot logic, script generation, content generation, API orchestration.
• Generative Media / AI Video or Image Generation — 1+ year
• Experience with tools/APIs like Runway, Pika, Luma, Kling, Replicate, ComfyUI, Stable Diffusion, video/image generation pipelines, storyboard-to-video workflows."
  
  About the Project
  We are building an AI-powered web platform that helps businesses create animated explainer videos faster and at scale.
  The product should guide users through the full video creation workflow: from the initial prompt and business context, to script generation, storyboard creation, video generation, and further editing based on user feedback.
  The first goal is to launch an MVP/demo version quickly by integrating existing AI tools and APIs. The longer-term vision may include building a proprietary AI video generation engine based on product usage, customer feedback, and accumulated data.
  This is an early-stage product, so we are looking for a hands-on engineer who can work directly with non-technical founders, make practical technical decisions, and help turn a business vision into a working product.
  Role Overview
  We are looking for a strong Senior Full-Stack AI Product Engineer who can take ownership of the technical side of the MVP.
  The ideal candidate should be able to build a web application, integrate AI tools for script/storyboard/video generation, design the core workflow, and advise the founders on what is technically realistic, what should be prioritized, and how to move fast without overengineering.
  This is not a narrow coding-only role. The person should be comfortable working in an early-stage environment, communicating clearly with business stakeholders, and helping define the best technical approach.
  
  Key Responsibilities
• Build an MVP of an AI-powered video generation platform.
• Create a user workflow where clients can submit prompts, provide business context, review scripts, approve storyboards, generate videos, and request changes.
• Integrate existing AI models/tools/APIs for text generation, image/storyboard generation, and video generation.
• Develop the web application structure, including landing page, subscription/payment flow, and user-facing app area.
• Build or integrate an AI chat-style interface for collecting user requirements and managing video creation flow.
• Help evaluate which AI tools are best suited for fast MVP delivery.
• Advise the founders on technical feasibility, risks, limitations, and realistic timelines.
• Iterate on the platform based on testing, feedback, and product metrics.
• Prepare the architecture in a way that allows future improvements or possible development of a proprietary AI video engine.

• Communicate directly with the founders and explain technical decisions in a clear, business-friendly way.

   

Required Experience

• 5+ years of software engineering experience.
• Strong full-stack development experience.
• Proven experience building MVPs or early-stage products from scratch.
• Hands-on experience with AI/LLM integrations.
• Experience integrating third-party APIs and AI services.
• Strong backend and frontend development skills.
• Ability to work independently and take ownership of product delivery.
• Experience working directly with non-technical stakeholders.
• Good understanding of product development, UX flow, and fast iteration.
• Strong communication skills in English.

The company helps hotel chains like Hilton and Marriott transform front-desk staff into revenue generators through upselling training and analytics. Their IN-Gauge SaaS platform empowers frontline teams across 2,000+ properties in over 100 countries.

Requirements:

• Data engineering - 5 years
• AWS - 3 years (1 year latest project)
• Spark/PySpark - 2 years (1 year latest project)

Ability to work in high load environments, we're looking for autonomous and proactive candidates

It is a leader in AI-powered computer vision and predictive systems for manufacturers, delivering integrated solutions that connect edge devices and factory systems with cloud software to optimize production quality and throughput. As a Forward Deployed Engineer, you will play a pivotal role in deploying advanced AI systems directly into customer environments, acting as the primary technical contact and trusted advisor for strategic manufacturing accounts.

Key responsibilities include:

• Own the end-to-end lifecycle of AI deployment for manufacturing clients, from scoping and integration to production hardening and handover.
• Embed with customer operations and IT teams, serving as the main technical advisor and point of contact.
• Integrate AI vision systems with OT/IT/cloud stacks, including OPC-UA/Modbus/PLCs, NVIDIA Jetson edge inference, ERP, and customer cloud platforms.
• Build and iterate data pipelines and customer-side data flywheels, covering edge-to-cloud capture, model deployment, monitoring, and feedback loops.
• Troubleshoot software, networking, and integration issues in live production environments.
• Document architectures and configurations, producing formal handover artifacts for long-term support.
• Participate in pre-sales scoping calls and contribute field learnings to the product and engineering roadmap, helping shape reusable deployment patterns and internal tooling.
• Support on-site data collection and annotation as needed.

Requirements
Required Qualifications:

• 6+ years of experience combining production software engineering with industrial automation and/or applied AI
• Proven experience shipping and supporting production software systems deployed into customer infrastructure
• Production Python development experience with hands-on use of Linux, Docker, and Git in production environments
• Cloud deployment and operations experience with at least one major platform (AWS, Azure, or GCP)
• Hands-on experience with at least one of: OPC-UA/Modbus/PLC integration, NVIDIA Jetson (or equivalent) edge platforms, or GenICam/industrial vision systems
• Networking fundamentals for industrial deployments, including TCP/IP, VLANs, and firewalls
• Experience in a customer-facing engineering role as the primary technical contact for external stakeholders
• Professional working proficiency in English

Preferred Qualifications:

• Professional experience working in industrial automation or manufacturing environments involving OT/IT integration

Основні вимоги:

• 6+ years of technical experience
• Python/Linux/Docker - 3+ years
• production deployments or system integration - 3+ years
• industrial automation/factory systems - 2+ years
• PLC/OPC-UA/Modbus or industrial networking - 1–2+ years
• computer vision/Edge AI - 1–2+ years
• client-facing experience - 2+ years

Графік до 01:00 ночі по Київу !!!

Project Environment

• Building an AI-native delivery team focused on shipping working software within days instead of months
• Strong use of modern AI development tools such as Claude Code, Cursor, Replit, v0, Lovable, Bolt
• Focus on rapid prototyping, fast iteration, and real user feedback
• Close collaboration with integration engineering for production hardening

Tasks

• End-to-end development of working software using AI-native tooling
• Rapid prototyping and delivery to internal users, operations teams, and pilot tenants
• Iterative workflow: build → demo → learn → rebuild
• Development of LLM-powered features (e.g. AI search, document processing, summarization, agent workflows)
• Pragmatic full-stack work (frontend, backend, basic data & deployment)
• Evaluation and adoption of emerging AI development tools
• Handover of validated prototypes to engineering teams for production scaling
• Continuous improvement based on user feedback and real-world usage

Approach & Working Style

• High-speed delivery with short feedback loops
• Clear distinction between prototype and production quality
• Focus on impact rather than perfection
• Willingness to discard non-performing solutions quickly
• Strong use of AI assistants in daily development workflow

Requirements

• 4+ years of development experience or strong portfolio of shipped products
• Mandatory: portfolio with at least 2–3 recently shipped AI-built prototypes (link required)
• Solid full-stack capabilities (e.g. React/Vue, Node/Python, basic databases, deployment)
• Daily use of AI coding tools (e.g. Claude Code, Cursor or similar)
• Understanding of when to scale vs. discard solutions
• Comfort working in fast, experimental environments
• Experience with real estate / proptech is a plus

Core Competencies

• High velocity under uncertainty
• Strong prototype-to-production judgment
• Deep familiarity with AI development tools
• Close collaboration with end users
• Pragmatic approach to quality and iteration
• No attachment to code — focus on outcomes

Profile

• Builder mindset with focus on shipped results
• Preference for fast execution over long planning cycles
• Comfortable working with evolving requirements
• Curious about operational processes and real-world user problems
• AI-first way of working
• Responsible handling of sensitive data

General Conditions

• Language: English (advanced) !!!!!
• Degree not required if portfolio is strong
• Proven delivery outweighs formal credentials
• Location: EU

We are seeking experienced Embedded Systems Engineers with strong expertise in autonomous UAV and edge-computing environments.

Workload: full-time
Start: N/A
Duration: long-term
English: B2

Key Requirements

• Strong hands-on experience with: Rust and/or C++Embedded and real-time systems
• Drone telemetry and autonomous flight systems
  
  Experience working with:
• ArduPilot
• NVIDIA Jetson Orin
• HereLink
• Orange Cube flight controllers
• GPS and LiDAR integration
• Private 5G networks (MPN) utilizing O-RAN
  
  Preferred Background
• UAV software stack integration
• Edge computing and safety-critical systems
• Secure communications and telemetry architectures
• BVLOS or advanced drone operations environments

Responsibilities

• Develop and optimize embedded software for UAV platforms
• Integrate telemetry, sensor, and communication systems
• Support edge-controller and autonomous flight architectures
• Collaborate across software, hardware, and networking domains

About Project: Multi-tenant exhibition platform that powers AI-guided, gamified visitor experiences for live venues.

Experience:
• Strong production experience on AWS (Lambda, ECS, Aurora or RDS, and the surrounding services)
• Deep PostgreSQL: schema design, query performance, and hands-on experience with row-level security or another rigorous approach to multi-tenant data isolation
• TypeScript fluency on the server side
• Experience designing event-driven or streaming systems (SQS, Kinesis, WebSocket, or equivalent)
• A track record of operating production services: metrics, tracing, alerting, on-call response

Nice to Have:
• LLM integration in production: prompt engineering, streaming inference, latency and cost optimization
• Real-time audio or TTS pipelines
• B2B multi-tenant authentication (Stytch, Auth0, Cognito, or similar)
• Reading Rust (one Rust service in production)
• Headless CMS integrations
• Beacon, BLE, or other sensor-data ingestion pipelines
• Background in cultural, museum, live-event, or exhibition technology

Tech: AWS end-to-end. Lambda and ECS Fargate for compute, Aurora PostgreSQL with pgvector and row-level security for data, ElastiCache Redis, S3 + CloudFront, SQS for fan-out, API Gateway in front. TypeScript on the services, Rust on the streaming layer. Stytch for authentication. PostHog and Mixpanel for analytics. Terraform per service, GitHub Actions for CI/CD.

English level: Upper intermediate (Must be able to speak fluently!)

This is not a “build everything from scratch” role.
The main focus is working with legacy systems, understanding existing architecture, supporting ongoing development, fixing issues, and gradually improving the platform together with the team.

## Requirements
* Min. 5+ years of commercial experience with C# / .NET
* Good experience with legacy enterprise applications
* Experience supporting and improving existing systems
* Solid knowledge of ASP.NET / .NET Core
* Experience with SQL databases
* Frontend experience with Angular or React
* Understanding of APIs and microservices
* Experience with cloud environments is a plus (Azure or AWS)

## Nice to have
* Experience with Docker / CI/CD
* Experience with message brokers or distributed systems
* Understanding of modernizing monolithic applications
* Experience in enterprise or long-term support projects

## Responsibilities
* Support and maintain existing applications
* Analyze and fix production and business issues
* Develop new features in existing systems
* Participate in gradual modernization and refactoring
* Collaborate with product owners, QA, and other developers
* Write clean and maintainable code
* Participate in technical discussions and code reviews

Location: Remote /Ukraine/ Europe preferred
German language — B1-B2 level
English — good working level

test task +1 tech interview + final cultural fit interview

"AQA - 5+ years (expert-level proficiency in JavaScript as the primary scripting language; working knowledge of Python or Java is a strong plus.)
deep, hands-on expertise with WebdriverIO (WDIO) as the primary automation framework. Experience with additional frameworks such as Cypress, Appium, Playwright, or similar is highly valued
proficiency with API testing tools such as Postman, REST Assured, or similar"

Required Qualifications

• Bachelor's degree in Computer Science, Software Engineering, or a related technical field (or equivalent practical experience).
• 6+ years of professional experience in software quality assurance, with a strong focus on test automation.
• Expert-level proficiency in JavaScript as the primary scripting language; working knowledge of Python or Java is a strong plus.
• Deep, hands-on expertise with WebdriverIO (WDIO) as the primary automation framework. Experience with additional frameworks such as Cypress, Appium, Playwright, or similar is highly valued.
• Hands-on experience leveraging AI-powered testing tools and AI-assisted development tools to accelerate test creation, maintenance, and defect detection.
• Solid understanding of software testing methodologies across functional, regression, integration, performance, API, and end-to-end testing.
• Proficiency with API testing tools such as Postman, REST Assured, or similar.
• Experience integrating automated tests into CI/CD pipelines.
• Strong working knowledge of version control systems (Git).
• Excellent command of the English language, speaking, listening, reading, and writing, as this is an international company and English is the primary language of communication and documentation.

Preferred Qualifications

• Experience with performance and load testing tools (Locust, JMeter, k6, Gatling).
• Familiarity with containerization and cloud platforms (Docker, Kubernetes, AWS, Azure, or GCP).
• Experience testing AI/ML-based applications, including model output validation and prompt-based testing strategies.
• ISTQB or equivalent QA certification.

Nice to Have

• Familiarity with security testing fundamentals, including common vulnerabilities (e.g., OWASP Top 10), authentication/authorization testing, and secure API testing practices.
• Hands-on experience with web proxy and security testing tools such as Burp Suite, OWASP ZAP, Charles Proxy, or Fiddler for traffic inspection, request manipulation, and vulnerability discovery.

Core Competencies

• Excellent analytical and problem-solving skills with strong attention to detail.
• Proven ability to mentor junior engineers and drive quality standards across teams.
• Strong written and verbal communication skills in English, with the ability to clearly document test strategies, results, and defects, and to collaborate effectively with cross-functional, distributed teams.
• Ownership mindset and the ability to operate independently in a fast-paced, international environment.

We are looking for a Senior Full-Stack Engineer with strong .NET experience to join a long-term enterprise project focused on maintaining and improving existing business systems.

This is not a “build everything from scratch” role.
The main focus is working with legacy systems, understanding existing architecture, supporting ongoing development, fixing issues, and gradually improving the platform together with the team.

## Requirements
* Min. 5+ years of commercial experience with C# / .NET
* Good experience with legacy enterprise applications
* Experience supporting and improving existing systems
* Solid knowledge of ASP.NET / .NET Core
* Experience with SQL databases
* Frontend experience with Angular or React
* Understanding of APIs and microservices
* Experience with cloud environments is a plus (Azure or AWS)

## Nice to have
* Experience with Docker / CI/CD
* Experience with message brokers or distributed systems
* Understanding of modernizing monolithic applications
* Experience in enterprise or long-term support projects

## Responsibilities
* Support and maintain existing applications
* Analyze and fix production and business issues
* Develop new features in existing systems
* Participate in gradual modernization and refactoring
* Collaborate with product owners, QA, and other developers
* Write clean and maintainable code
* Participate in technical discussions and code reviews

Location: Remote /Ukraine/ Europe preferred
German language — B1-B2 level
English — good working level

Responsibilities

• Design, develop, and maintain enterprise-level web applications using Angular.
• Build responsive and user-friendly interfaces based on UX/UI requirements.
• Integrate frontend applications with RESTful APIs and backend services.
• Optimize application performance and ensure cross-browser compatibility.
• Write clean, maintainable, and well-tested code.
• Participate in architecture and technical design discussions.
• Conduct code reviews and mentor junior developers.
• Collaborate with Product Owners, UX/UI designers, QA engineers, and backend developers.
• Communicate directly with German-speaking clients and stakeholders.
   

Requirements

• 5+ years of commercial experience in frontend development.
• 3+ years of hands-on experience with Angular (Angular 12+).
• Strong knowledge of TypeScript, JavaScript, HTML5, and SCSS/CSS3.
• Experience with RxJS and reactive programming concepts.
• Experience with state management solutions such as NgRx.
• Solid understanding of REST APIs and integration with backend services.
• Experience with unit testing using Jasmine and Karma, or modern alternatives like Jest.
• Familiarity with responsive design and cross-browser compatibility.
• Experience with Git.
• German language skills at Upper-Intermediate level or higher (B2+).
• Good English communication skills.

Responsibilities

• Design, develop, and maintain modern web applications using Node.js and Angular.
• Build robust RESTful APIs and backend services.
• Develop responsive, high-performance frontend interfaces.
• Participate in architecture and technical design discussions.
• Integrate third-party APIs and external systems.
• Write clean, maintainable, and well-tested code.
• Conduct code reviews and mentor other team members.
• Collaborate with Product Managers, QA engineers, and DevOps specialists.
• Troubleshoot and resolve performance and production issues.
   

Requirements

• 5+ years of commercial software development experience.
• Strong expertise with Node.js and Angular.
• Proficiency in TypeScript and JavaScript.
• Experience with Express.js or NestJS.
• Strong understanding of REST APIs and microservices architecture.
• Experience with state management in Angular (NgRx is a plus).
• Knowledge of HTML5, CSS3, SCSS, and responsive design principles.
• Experience with relational and/or NoSQL databases such as PostgreSQL, MongoDB, or MySQL.
• Familiarity with Docker.
• Experience with CI/CD pipelines.
• Proficiency with Git.
• Upper-Intermediate English level or higher.