Jobs

Requirements:

- 3+ years in a senior operational role (working with Fin, Legal, HR departments)
- Proven ability to lead and develop teams, fostering collaboration and a results-driven environment.
- Strong analytical and strategic thinking skills, with a track record of successful strategy execution.
- Exceptional interpersonal and communication skills to influence and collaborate with stakeholders at all levels.
- Excellent problem-solving skills with the ability to make data-driven decisions quickly.
- Able to thrive in a fast-paced, dynamic environment with changing market conditions.
- Proficient level of English (both written and verbal).
- Strategic thinking: ability to see and manage operations in accordance with the company's long-term strategy.
- Effective communication: transparency in communication and ability to establish interaction between departments.
- Organizational skills: creating systems that work without failures.
- Flexibility and initiative: readiness to delve into details, take responsibility, and accept challenges.

Responsibilities:

- Operational Leadership: Oversee day-to-day operations across departments (HR, Legal, Finance)

Finance: experience with bank account opening, KYC/KYB procedures, compliance, P&L development and automation, analytical reports on company resource utilization, cash flow management.

Legal: experience working with contracts and partnership agreements, debtors, building operational structures with internal and external legal entities, company incorporation, nominee services, working with auditors and registrars (foreign companies).
- Strategy Development and Execution: Collaborate with the executive team to develop and implement operational strategies that support business growth
- Team Management: Lead, mentor, and inspire department heads, fostering a high-performance culture focused on excellence and accountability.
- Market Analysis: Monitor market trends, competitors, and industry changes to identify growth opportunities and operational improvements.
Process Optimization: Develop and refine operational processes to improve efficiency, scalability, and productivity across the company.
- Compliance and Risk Management: Ensure all operational activities comply with regulatory requirements and industry standards to mitigate risks and protect the company’s reputation.

Responsibilities:

    •    Launch and scale PPC campaigns for dating offers (primarily Google Ads)
    •    Keyword research and search intent analysis for dating vertical
    •    Creation and testing of ad copies compliant with dating policies
    •    Management of budgets, bids, CPA / ROI targets
    •    Setup and optimization of conversion tracking (registrations, subscriptions, payments)
    •    A/B testing of creatives, landers and funnels
    •    Monitoring traffic quality, approvals, bans and account health
    •    Working closely with tech / tracking / product teams
    •    GEO expansion and scaling profitable funnels

Requirements:

    •    Proven experience in PPC for dating offers
    •    Strong knowledge of Google Ads policies (dating, adult, sensitive content)
    •    Experience with keyword-based traffic (Search, Discovery)
    •    Understanding of dating funnels:
registration → subscription → rebill
    •    Ability to work with CPA / RevShare models
    •    Hands-on experience with trackers and analytics
    •    Strong optimization and scaling skills

Experience with Tier-1 GEOs (US, UK, CA, AU)
    •    Work with pre-landers and compliant funnels
    •    Experience recovering accounts / ads
    •    Understanding of cloaking risks and safe setups

This vacancy requires office attendance in Kyiv

Responsibilities

• Work in SCRUM team 
• Design and develop high-load microservices
• Write high-quality code covered with different levels of tests
• Maintain services on production and assure their stability and performance
• Provide code review for teammates 
• Contribute to the Company’s development processes and practices 

Requirements

• Writing code in a clean and maintainable manner.
• Solid experience with Java 8+ 
• Experience with SQL/NoSQL databases
• Understand microservice architecture patterns.
• Good at Spring framework.
• Experience with REST, messaging systems.
• Ability to cover code by different types of tests.
• Understanding of SOLID principles
• Experience with Git 
• Excellent troubleshooting skills.
• Good communication skills.
• Intermediate+ English

Would be great to have:

• Experience with Kafka, MySQL, Redis, Aerospike.
• Experience with Spring Boot, Spring Cloud
• Experience with Docker, Kubernetes
• Experience in high-load

What we offer:

• International company with several offices in different locations : Tel-Aviv, Kyiv, Warsaw, Limassol.
• Granting an Option;
• A professional environment with great people to work with;
• Competitive salary, performance review;
• Flexible working hours, no one here tracks your work time because our culture is built on trust and cooperation;
• Social and welfare packages;
• 20 working days paid vacation and 100% sick leaves coverage;
• Opportunities to make a difference, to develop and grow;
• Regular corporate celebrations, team buildings and fun activities;
• Comfortable office close to the metro station. Our Kyiv office is open 24/7 with all safety and health measures in place.

Remote  |  EU Time Zone (CET ±4 hours)  |  Full-Time

Competitive salary based on experience  |  Equity options available

About Amplifier AI

We’re building the next generation of surgical planning software for interventional radiology and cardiothoracic surgery. Our platform turns CT scans into interactive 3D models that help surgeons plan complex procedures—from endovascular aortic repair (EVAR) to transcatheter aortic valve implantation (TAVI) and beyond.

Our core library powers 17+ clinical analysis pipelines that perform automated anatomical segmentation, vessel centerline extraction, hemodynamic measurements, and risk stratification. Every algorithm we ship has a direct impact on patient outcomes.

We’re a small, focused team where your code goes from PR to operating-room screen in weeks, not quarters. If you want to work on technically challenging problems that genuinely matter, keep reading.

What You’ll Work On

This isn’t a generic backend role. Here’s what a typical month might look like:

• Extending our NNUnet-based segmentation pipelines (we run 15+ trained models across organs, vessels, bones, and tumors) and validating results against clinical ground truth

• Building automated measurement workflows—think aortic neck angulation, iliac tortuosity indices, or landing-zone diameter calculations that feed directly into surgical reports

• Developing new workspace modules: designing the data flow from raw DICOM volumes through preprocessing, AI inference, post-processing, and 3D scene generation

• Optimizing inference performance for GPU and CPU execution, including memory-aware scheduling and adaptive resolution strategies

• Working with SimpleITK, NumPy, and our in-house volume processing library to manipulate medical images at the voxel level—resampling, label morphology, island filtering, ROI extraction

• Collaborating directly with radiologists and surgeons to translate clinical requirements into algorithmic specifications

Our Tech Stack

• Language: Python 3.12+ (modern typing, dataclasses, async patterns)

• Medical Imaging: SimpleITK, NIfTI volumes, DICOM processing

• AI/ML: NNUnet framework, PyTorch, custom inference pipelines

• Infrastructure: Docker, NVIDIA GPU compute, CI/CD with automated testing

• 3D Visualization: Unity integration (you won’t write C#, but your Python outputs drive the 3D viewer)

• Tools: Git, Jira, Confluence, VS Code / PyCharm

What We’re Looking For

Must-haves:

• Strong Python fundamentals: you write clean, typed, well-structured code and understand performance trade-offs

• Experience with NumPy/SciPy for numerical computing—you’re comfortable thinking in arrays and transforms

• Familiarity with medical imaging concepts (DICOM, NIfTI, voxel spaces, coordinate systems) or strong willingness to learn quickly

• Understanding of machine learning inference pipelines, even if you’re not training models from scratch

• Ability to work independently in a remote-first environment with 4+ hours of overlap with CET business hours

Nice-to-haves:

• Experience with SimpleITK or ITK for image registration, segmentation, or morphological operations

• Background in NNUnet or similar medical segmentation frameworks

• Knowledge of 3D geometry: meshes, centerline extraction, spatial transforms

• Contributions to open-source scientific Python projects

• Domain experience in radiology, surgical planning, or health-tech

A Few Things to Know

To set expectations clearly, here’s what this role involves:

• The codebase is scientifically dense—you’ll work with Hounsfield units, anatomical coordinate systems, and clinical measurement standards. Curiosity about the domain is essential.

• We’re a startup. Processes are evolving, requirements shift, and you’ll sometimes need to figure things out from first principles rather than following established playbooks.

• This is primarily a backend/algorithmic role. If you’re looking for frontend or web development work, this isn’t the right fit.

• We care deeply about code quality—type hints, meaningful tests, clear documentation. We review each other’s work carefully.

Why Join Us

• Direct clinical impact: your code helps surgeons plan life-saving procedures more accurately

• Technically deep work at the intersection of AI, medical imaging, and 3D visualization

• Small team, big ownership: you’ll shape architecture decisions and see your ideas go to production

• Flexible remote setup with asynchronous communication and minimal meetings

• Competitive compensation with equity participation

How to Apply

Send us your CV along with a short note covering:

1. A brief description of the most technically challenging Python project you’ve worked on—what made it hard, and how you solved it.

2. Your experience (if any) with medical imaging, numerical computing, or ML inference—even if it’s from a different domain.

3. Your availability and time zone.

No cover letter template needed—just be direct. We review every application personally.

We are looking for a detail-oriented and proactive Junior Manual QA Engineer

Requirements

✔️ 6 months – 1 year of experience in web application testing (or completed QA courses / internship)
✔️ Basic understanding of QA processes and testing methodologies
✔️ Experience or theoretical knowledge of test case and checklist creation
✔️ Basic knowledge of web development tools (Chrome DevTools, Web Developer Console, etc.)
✔️ Basic understanding of API testing
✔️ Familiarity with Postman or similar tools
✔️ Basic knowledge of SQL (simple SELECT queries will be a plus)
✔️ Attention to detail and analytical thinking
✔️ Good communication skills and willingness to learn
✔️ Experience working in Scrum teams will be a plus

Responsibilities

🔹 Manual testing of web and mobile applications
🔹 Execution of test cases and checklists
🔹 Assisting in preparation and maintenance of test documentation
🔹 Reporting and tracking issues in bug tracking systems
🔹 Participating in requirements analysis and documentation testing
🔹 Collaborating with developers and QA team members
🔹 Supporting quality assurance processes in the development lifecycle
🔹 Learning and improving QA skills and methodologies

We Offer

✨ Opportunity to work on interesting and challenging projects
✨ Mentorship and professional growth opportunities
✨ Competitive salary based on qualifications and experience
✨ Comfortable office location
✨ Paid vacation and sick leave

We’re looking for a Full Stack Developer (Vue.js + Node.js) to join our team and work on a long-term product in the AdTech space.

The project is a high-load SaaS platform focused on automating and optimizing digital marketing workflows. You’ll work on building scalable features, improving performance, and shaping the architecture of a data-driven product used in real-world marketing operations.

What you’ll do:

• Design and develop new features across frontend and backend
• Participate in system architecture and technical decisions
• Improve and refactor existing codebase
• Work with high-load systems and optimize performance
• Support production releases and ensure system stability

What we’re looking for:

• 3+ years of experience with Node.js and Vue.js
• Strong knowledge of JavaScript, HTML, CSS, and MySQL
• Experience with Git, Docker, and Unix-based systems
• Understanding of scalable architecture and high-load systems
• Nice to have: experience with Capacitor

What you’ll get:

• Work on a real product with active users and feedback
• Active team, fast decisions, and real impact on the product
• Competitive compensation
• Flexible environment and remote-friendly setup
• Paid learning and development support

Hiring process:

• Intro + technical interview (up to 90 minutes, includes test task)
• Offer & start

We don't expect everyone to meet every requirement we've mentioned. If you feel you could be a valuable addition to our team, we're excited to hear your story.

Ajax Systems is an international tech company and the largest manufacturer of security systems in Europe, with over 4.5 million end users and 330K PRO users in more than 180 countries worldwide. The company offers end-to-end solutions for protecting homes and businesses оf any scale. To date, Ajax product portfolio includes 280 devices for intrusion protection, video surveillance, fire and life safety, and comfort and automation. The company employs 5, 000 specialists.

We’re looking for a Junior Python Developer to join our AI team, where you’ll help teach our video

devices to see more than just a picture — to distinguish specific objects in the frame, track their

movement and behavior, and recognize events and the people involved.

This role focuses on the practical engineering work that makes it all possible — sourcing,

processing, and versioning training data across multiple formats and sources, developing internal

tools that ML engineers rely on daily, and contributing to a complete ML platform for automated

training, evaluation, and deployment.

What we’re looking for
 

Must have:

• CS fundamentals — familiarity with common data structures and algorithms

• Python skills — ability to write clean, maintainable code

• Database fundamentals — understanding of different database types, core concepts like

indexing, schemas, transactions, and SQL queries

• Basic understanding of computer vision concepts

• Experience working with common data formats — JSON, XML, YAML
 

Good to have:

• Experience with object detection frameworks

• Familiarity with OpenCV, NumPy, Pandas, or similar data processing libraries

• Exposure to MLOps tooling — experiment tracking, dataset versioning, data pipelines
 

We offer:

• An opportunity to take on new challenges, advance your career, and make a meaningful impact.

• Opportunity to be part of a fast-paced and dynamic environment that encourages creativity, critical thinking, and the exploration of new ideas.

Come Back Agency supports US software and technology companies by running their hiring process. We work with delivery and leadership teams to define roles, screen candidates, and manage interviews. Successful candidates are hired directly by the company and become part of its team.

Employer information:
This position is with a US-based software company providing custom development and AI implementation for North American clients. The team builds and maintains production software, including AI-enabled systems, and works in long-term client engagements.
Team members operate as part of an internal, distributed team and collaborate directly with client stakeholders.

About the role:

We are looking for a talented Node.js Backend Developer to join our dynamic team. You will be responsible for developing and maintaining server-side logic, defining and maintaining the central database, and ensuring high performance and responsiveness to requests from the frontend. If you’re passionate about building scalable backend systems and have experience with Node.js, Express,Nest,js Sequelize,Prisma, Socket.io, and databases like Redis, PostgreSQL, and MongoDB, we’d love to hear from you!

What you will do:

• Develop, maintain, and improve backend services using Node.js, Express.js, and Nest.js.
• Design scalable and maintainable system architecture for web applications and services.
• Build and optimize RESTful APIs and ensure secure integration with internal and third-party systems.
• Work with PostgreSQL, Redis, and MongoDB for data storage, caching, and performance optimization.
• Implement real-time functionality using Socket.io or similar technologies.
• Develop and support file upload and processing flows using Multer or equivalent tools.
• Implement secure authentication and authorization mechanisms using JWT, OAuth, and role-based access control.
• Apply backend security best practices, including CORS, input validation, error handling, and access control.
• Optimize application performance, reliability, and scalability in production environments.
• Write clean, maintainable, and testable code following best engineering practices.
• Collaborate closely with frontend developers, QA engineers, and product teams to deliver end-to-end features.
• Integrate external APIs, payment providers, cloud services, and other third-party solutions.
• Contribute to the design and development of microservices and distributed systems.
• Use Docker for local development, service orchestration, and deployment consistency.
• Deploy, monitor, and maintain services on AWS or other cloud platforms.
• Participate in code reviews, technical discussions, and architecture decisions.
• Maintain and improve technical documentation for services, integrations, and internal processes.

What we are looking for:

• 2+ years of commercial backend development experience with Node.js.
• English level B2 or higher.
• Strong hands-on experience with Express.js and Nest.js in production projects.
• Solid experience with Prisma or other ORMs and a good understanding of database design principles.
• Strong knowledge of REST API design, integration patterns, and backend best practices.
• Practical experience with Socket.io or other real-time communication solutions.
• Strong knowledge of PostgreSQL and experience with Redis for caching and performance improvements.
• Working knowledge of MongoDB and understanding when to use relational vs non-relational databases.
• Experience with Docker in development and deployment workflows.
• Good understanding of AWS services such as EC2, S3, Lambda, or similar cloud platforms.
• Solid understanding of backend security practices: JWT, OAuth, CORS, validation, authorization, and secure API design.
• Good knowledge of Git and collaborative development workflows.
• Understanding of microservices architecture, service communication, and scalable system design.
• Strong problem-solving, analytical, and debugging skills.
• Ability to write structured, readable, and maintainable code with attention to quality.
• Good communication skills and ability to work effectively in a team environment.
• Experience participating in code reviews and improving engineering quality.

Nice to have:

• Familiarity with CI/CD pipelines.
• Experience with Kubernetes.
• Exposure to logging and monitoring tools (e.g., ELK, Prometheus).

Hiring stages: Recruiter screening → Technical interview (live coding) → Final culture fit interview.

What We Offer:

• Working hours aligned with US time zones, typically 16:00-00:00 Kyiv time.
• English lessons to support clear and confident communication.
• Paid vacation and sick days.
• Fully remote work.
• Opportunities for professional growth within the team.
• Structured, personalized onboarding to help you ramp up effectively.

Apply with your resume and a short note outlining your relevant experience. You can also send your resume directly through our website at comeback.ua. Selected candidates will be contacted by the Come Back Agency.

Our mission at Geniusee is to help businesses thrive through tech partnership and strengthen the engineering community by sharing knowledge and creating opportunities🌿
Our values are Continuous Growth, Team Synergy, Taking Responsibility, Conscious Openness and Result Driven. We offer a safe, inclusive and productive environment for all team members, and we’re always open to feedback 💜 If you want to work from home or work in the offices in Kyiv or Lviv with stable electricity and Wi-Fi , great — apply right now.

About the project:
Our client is a well-established Unified School Management Platform offering AI-managed, scalable content filtering, Classroom Screen Monitoring, and early threat detection.

Requirements:

• 7-10 years of experience;
• Apple MDM SDK knowledge is a must;
• IOS and MacOS operating system knowledge, along with Apple extensions and logging system;
• Knowing how to build packages for Apple devices ( com.x.x );
• Experience with Swift;
• Experience with Flutter;
• A hacking mind, as somehow you need to know how to navigate the Apple ecosystem and get your app reviewed and approved by Apple;
• Must have submitted and dealt with Apple reviewers extensively.

Responsibilities:

• Support the existing ios and mac os apps, ensure a smooth Apple review process, new features development, and bugfixing.

Cloud Infrastructure Engineer

About the role:

We are looking for an experienced Cloud Infrastructure Engineer to join a fast-growing digital health product company focused on improving cardiovascular health outcomes.

The product combines applied science and technology to help users better understand and manage their heart health. The solution is already used at scale and continues to grow rapidly, which creates new challenges in infrastructure, scalability, and reliability.

You will play a key role in building, scaling, and securing a modern cloud infrastructure that supports data-heavy and ML-driven systems.

What you will do:

• Build and maintain a production-ready ML pipeline and data lake
• Improve and evolve build automation processes (transition from CI to full CD)
• Design, scale, and secure Kafka clusters running on Kubernetes
• Collaborate with engineering and security teams to improve infrastructure and compliance
• Develop monitoring systems, dashboards, alerts, and internal tools
• Identify and mitigate reliability and security risks in production systems

Tech stack:

Scala, Python, React Native
AWS, Kubernetes, Docker
Kafka, MongoDB, PostgreSQL, Redis
Nginx, ELK, Prometheus
Jenkins and other CI/CD tools

Requirements:

• 5+ years of experience in DevOps / Cloud Infrastructure roles
• Strong production experience with AWS (or another major cloud provider)
• Hands-on experience with Kubernetes and Docker in production
• Programming experience with at least one of: Scala, Java, or Python
• Experience with CI/CD pipelines and automation tools
• Solid understanding of distributed systems and scalable architectures

Nice to have:

• Experience with Kafka (clusters, streams)
• Experience with ML pipelines or data platforms
• Experience with AI-assisted development tools (e.g., Claude Code)
• Experience with monitoring/logging tools (ELK, Prometheus, etc.)

What we are looking for:

• Independent and proactive mindset
• Ability to learn quickly and adapt to new technologies
• Strong ownership and responsibility for infrastructure decisions

Are you an iOS Developer with 3+ years of experience, ready for new opportunities?

We are looking for an experienced iOS Developer to collaborate with Octy on mobile projects for our international clients.

Please note: This position is part of our pre-hiring process for upcoming projects.

Required Skills

• Proficiency in Swift 
• 3+ years of experience in iOS app development
• Strong knowledge of UIKit and/or SwiftUI
• Experience with REST APIs and JSON parsing
• Familiarity with local data storage (CoreData, Realm, or SQLite)
• Understanding of architectural patterns (MVC, MVVM, or VIPER)
• Familiarity with Git for version control

Nice to Have

• Experience publishing apps to the App Store
• Knowledge of Combine or async/await for reactive programming
• Basic experience with CI/CD tools (Fastlane, GitHub Actions, Bitrise)
• Familiarity with unit/UI testing frameworks (XCTest, Quick/Nimble)

What We Offer

• Opportunity to be considered for positions with our international clients
• Professional support during the selection and onboarding process
• Access to a knowledge base and internal materials to improve your expertise
• English courses with a native speaker at no cost to improve professional communication
• Coverage of AI tool expenses to improve your workflow and efficiency
• Ongoing technical support from our team

Hiring Process

1. Introductory call with a recruiter
2. Tech Q&A session
3. Product guidelines & test
4. Reference check 

Once these stages are completed, you may be considered for upcoming projects.

Turn ideas into impact — join our team!

Are you a React Native Developer with 3+ years of experience, ready for new opportunities?

We are looking for an experienced React Native Developer to collaborate with Octy on mobile projects for our international clients.

Please note: This position is part of our pre-hiring process for upcoming projects.

Required Skills

• Proficiency in JavaScript and TypeScript
• 3+ years of experience with React Native for cross-platform mobile app development
• Strong knowledge of state management (Redux, Redux Toolkit, Redux Saga)
• Experience with REST APIs and WebSocket integrations
• Knowledge of local databases (Realm, SQLite, or similar)
• Familiarity with Git for version control

Nice to Have

• Experience publishing apps to Google Play and App Store
• Basic knowledge of CI/CD (Fastlane, CircleCI, Bitrise)
• Experience with cloud platforms (AWS, GCP, Azure)
• Familiarity with debugging tools (Flipper, Reactotron)
• Understanding of event-driven systems

What We Offer

• Opportunity to be considered for positions with our international clients
• Professional support during the selection and onboarding process
• Access to a knowledge base and internal materials to improve your expertise
• English courses with a native speaker at no cost to improve professional communication
• Coverage of AI tool expenses to improve your workflow and efficiency
• Ongoing technical support from our team

Hiring Process

1. Introductory call with a recruiter
2. Tech Q&A session
3. Product guidelines & test
4. Reference check 

Once these stages are completed, you may be considered for upcoming projects.

Take the next step in your career — join our team and let global opportunities find you.

Are you an Android Developer with 3+ years of experience, ready for new opportunities?

We are looking for an experienced Android Developer to collaborate with Octy on mobile projects for our international clients.

Please note: This position is part of our pre-hiring process for upcoming projects.

​​

Required Skills

• Proficiency in Kotlin or Java for Android development
• 3+ years of experience building native Android applications
• Strong knowledge of Android SDK and core components (Activities, Fragments, Services, Broadcast Receivers)
• Experience with REST APIs and JSON parsing
• Knowledge of local data storage (Room, SQLite, or Realm)
• Familiarity with Git for version control

Nice to Have

• Experience publishing apps to Google Play
• Basic experience with CI/CD tools (Gradle, Jenkins, GitHub Actions, Bitrise)
• Familiarity with dependency injection frameworks (Dagger/Hilt, Koin)
• Understanding of reactive programming (RxJava, Kotlin Coroutines/Flow)
• Knowledge of app performance optimization and debugging tools (Android Profiler, LeakCanary)

What We Offer

• Opportunity to be considered for positions with our international clients
• Professional support during the selection and onboarding process
• Access to a knowledge base and internal materials to improve your expertise
• English courses with a native speaker at no cost to improve professional communication
• Coverage of AI tool expenses to improve your workflow and efficiency
• Ongoing technical support from our team

Hiring Process

1. Introductory call with a recruiter
2. Tech Q&A session
3. Product guidelines & test
4. Reference check 

Once these stages are completed, you may be considered for upcoming projects.

Your next opportunity starts here — become part of our friendly team.

Are you a Flutter Developer with 3+ years of experience, ready for new opportunities?

We are looking for an experienced Flutter Developer to collaborate with Octy on mobile projects for our international clients.

Please note: This position is part of our pre-hiring process for upcoming projects.

Required Skills

• Proficiency in Dart
• 3+ years of experience with Flutter for cross-platform mobile app development
• Strong knowledge of state management (Bloc, Provider, Riverpod or similar)
• Experience with REST APIs and WebSocket integrations
• Knowledge of Firebase services (Auth, Firestore, Messaging, Analytics)
• Experience with local databases (SQLite, Hive, Drift)
• Familiarity with Git for version control

Nice to Have

• Experience publishing apps to Google Play and App Store
• Basic knowledge of CI/CD pipelines (GitHub Actions, GitLab CI, Codemagic, Bitrise)
• Understanding of app performance optimization and debugging tools
• Experience with Flutter Web/Desktop

What We Offer

• Opportunity to be considered for positions with our international clients
• Professional support during the selection and onboarding process
• Access to a knowledge base and internal materials to improve your expertise
• English courses with a native speaker at no cost to improve professional communication
• Coverage of AI tool expenses to improve your workflow and efficiency
• Ongoing technical support from our team

Hiring Process

1. Introductory call with a recruiter
2. Tech Q&A session
3. Product guidelines & test
4. Reference check 

Once these stages are completed, you may be considered for upcoming projects.

If you are ready for new challenges, join our team!

appflame - Ukrainian product-driven tech company building world-class products: Hily, Taimi, AdConnect, Mailkeeper, and more.

About us:

• 7 years in the market, 500+ team members, offices in Kyiv, London, Limassol, and a co-working hub in Warsaw.

• In 2025, appflame ranked 5th among the top 50 employers in Ukraine according to Forbes and won the “Best Place for Growth” award.

• Our apps Hily and Taimi are among the top 5 dating apps in the US with over 70 million users. AdConnect and Mailkeeper focus on building proprietary B2B and B2C solutions.

Our mission:

• To put Ukrainian-built products on the global map.

Our goals:

• Break into the global top 5 product companies.

• Become a unicorn.

• Make Ukraine a country where unicorns are born.

We’re looking for bold, driven people who are passionate about building real products and dream of launching and scaling great startups. You bring the ambition — we provide the environment to make it happen.

What you’ll do:
 

• Design and develop an AI-powered productivity analytics platform — from data pipeline architecture to the final analytical product that helps teams make data-driven decisions.

• Build scalable LLM pipelines (Claude, GPT): develop data chunking strategies, implement MapReduce approaches for parallel processing of large datasets, and synthesize results into structured reports and insights.

• Create a meta-workflow system where LLMs generate, test, and deploy automation scripts in an isolated environment — with automatic self-correction loops and production deployment without manual intervention.

• Develop system-level prompt engineering: build and maintain a library of prompt templates for various analytical scenarios — from summaries and profiles to deep performance analysis.

• Build an evaluation framework for AI output quality control: hallucination detection, consistency scoring, regression tests — ensuring the product delivers reliable and reproducible results.

• Scale the platform to new domains and analysis types without linear growth in manual effort — through an architecture that allows adding new modules via configuration, not code.

• Document AI architecture, define automation specs, and present product insights to stakeholders and clients.

It’s a match if you have:
 

• 2+ years of experience working with LLMs in production: prompt engineering, pipeline development, API integration — with at least 1 year of hands-on experience with advanced features (tool use, structured outputs, agents).

• Strong Python skills (async, dataclasses, type hints, API integrations) and a commitment to writing clean, testable, and maintainable code.

• Understanding of MapReduce patterns for LLM processing: ability to choose chunking strategies, organize parallel processing, and aggregate results into a cohesive analytical product.

• Experience building agentic systems: tool use, self-correcting loops, multi-agent workflows — and the judgment to know when an agent works better than a rigid pipeline.

• Proficiency in SQL and experience working with analytical databases.

• English at C1 level — comfortable reading documentation, writing technical specs, and communicating asynchronously.

• Ownership mentality: you take tasks end-to-end, debug production issues independently, and iterate to deliver results without micromanagement.

Nice to have:
 

• Experience with orchestration/automation platforms (Windmill, Dagster, Prefect) — understanding how to build reliable automated workflows.

• Knowledge of RAG architectures, vector databases, and embedding pipelines — ability to build systems that work with large volumes of unstructured data.

• Experience building evaluation systems for LLMs (LangSmith, PromptFoo, or custom solutions) — understanding how to measure and improve AI product quality.

• Familiarity with Databricks / Delta Lake or Snowflake — experience working with modern data platforms.

• Experience working at product-driven tech companies or AI startups where you needed to build and iterate quickly.

• Understanding of product team metrics (DAU, retention, unit economics) and the ability to connect technical decisions to product impact.

Preferred tech stack:

Core:

• Languages: Python (primary), SQL

• LLM APIs: Claude API (Anthropic), OpenAI API

• Databases: PostgreSQL, ClickHouse

• Infrastructure: Docker, Git, FastAPI, Pydantic, pytest, asyncio

Nice to have:

• Languages: TypeScript/JavaScript, Bash

• LLM APIs: Google Gemini API

• Orchestration & Automation: Windmill, Dagster, Prefect, Airflow, Temporal

• RAG & Embeddings: LangChain, LlamaIndex, ChromaDB, Pinecone, Weaviate, pgvector, FAISS

• Eval & Observability: LangSmith, PromptFoo, Weights & Biases, Arize AI

• Databases: Redis, MongoDB

• Data Platforms: Databricks, Delta Lake, Snowflake, BigQuery

• Infrastructure: Kubernetes, AWS (Lambda, SQS, S3), GCP

• CI/CD & DevOps: GitLab CI, GitHub Actions, Terraform

Hiring process: recruiter outreach > interview > test task > final interview > job offer.