Jobs at Djinni

About us

Ruby Labs is a leading tech company that creates and operates innovative consumer products. We offer a diverse range of opportunities across the health, education, and entertainment industries. Our innovative teams are driving the future of consumer-led products, and we're always looking for passionate individuals to join us. Learn more about our story at: https://rubylabs.com/about-us/

About the role

At RubyLabs, we’re seeking a senior AI Engineer (Node.js / Next.js / TypeScript) to shape our AI infrastructure and drive production-ready LLM experiences. You’ll work in a modern stack, making data-driven decisions around model performance, reliability, and cost.

You’ll own advanced prompt systems, structured outputs, and complex LLM workflows using LangChain or LlamaIndex. Observability, debugging, and evaluation are core to the role, leveraging Langfuse and AI gateways like OpenRouter to continuously improve model quality and operational efficiency. You’ll take full ownership of key AI features from experimentation to live production.

Key Responsibilities

• Advanced Prompt Engineering: Designing complex, dynamic prompt templates with conditional logic and efficiently reusing information and context within prompts to maximize generation quality and reasoning.
• Structured Outputs & Schemas: Implementing various response schemes (JSON mode, function calling, Zod/JSON schemas) to ensure AI outputs are predictable and ready for seamless integration into application logic.
• Prompt Engineering & Evaluations: Building robust evaluation pipelines and using Langfuse to collect feedback and score the quality of responses in real time.
• Tracing & Debugging: Performing deep debugging of complex LLM chains using Langfuse traces to identify bottlenecks and optimize for cost, latency, and context window usage.
• AI A/B Testing: Running systematic experiments across different models via OpenRouter (e.g., comparing Claude 3.5 Sonnet vs. GPT-4o) and analyzing results based on quantitative metrics.
• Data-Driven Decisions: Making deployment decisions for new prompts or models strictly based on quantitative benchmarks and trace data, rather than intuition.
• Output Scoring & Analysis: Developing scoring systems to analyze the “Problem → Solution” chain and identify root causes of hallucinations or logic errors using Langfuse analytics.
• Model Performance & Fine-Tuning: Regularly re-evaluating model performance as new architectures emerge and performing fine-tuning when necessary to meet specific domain requirements.

Qualifications

• Node.js & Next.js: Deep knowledge of the stack to build reliable services and handle complex LLM-generated data.
• Dynamic Prompting Skills: Proven experience in building prompts where content is highly dependent on input variables and context injection.
• OpenRouter Experience: Experience working with unified APIs, managing rate limits, and selecting the most cost-effective models for specific tasks.
• Langfuse (or similar): Understanding of LLM observability principles — setting up tracing, creating test datasets, and integrating scoring systems.
• Evaluation Methodology: Experience with frameworks like RAGAS or building custom “LLM-as-a-judge” systems.
• Analytical Mindset: Ability to transform raw generation logs into actionable business metrics and technical insights.
• Iterative Mindset: Focus on continuous product improvement through constant feedback loops.

Nice to have

• Fine-Tuning: Practical experience in fine-tuning models for specific domain tasks or JSON compliance.
• RAG Architecture: Understanding how to build and optimize Retrieval-Augmented Generation systems, including indexing, retrieval, and re-ranking.
• Python: Basic knowledge for working with data science scripts or AI evaluation libraries.

Location

Ruby Labs operates within the CET (Central European Time) zone. Applicants from any country are welcome to apply for the position as long as they are located within approximately ± 4 hours of CET. This ensures optimal collaboration and communication during working hours.

Benefits

Discover the perks of being part of our vibrant team! We offer:

• Remote Work Environment: Embrace the freedom to work from anywhere, anytime, promoting a healthy work-life balance.
• Unlimited PTO: Enjoy unlimited paid time off to recharge and prioritize your well-being, without counting days.
• Paid National Holidays: Celebrate and relax on national holidays with paid time off to unwind and recharge.
• Company-provided MacBook: Experience seamless productivity with top-notch Apple MacBooks provided to all employees who need them.
• Flexible Independent Contractor Agreement: Unlock the benefits of flexibility, autonomy, and entrepreneurial opportunities. Benefit from tax advantages, networking opportunities, reduced employment obligations, and the freedom to work from anywhere. Read more about it here: https://docs.google.com/document/d/1nkrN76JlZkbKj9WSOhlT1_mni_CZeDkHdwfIjPXVwvk/preview?tab=t.0#heading=h.ndsdl4wapxtt

Be part of our fast-growing team and seize this excellent opportunity for personal and professional growth!

Interview Process

After submitting your application, we conduct a thorough review which typically takes 3 to 5 days, but may occasionally take longer due to the volume of applications received. If we see a potential fit, we proceed with the following steps:

• Recruiter Screening (40 minutes)
• Technical Interview (60 minutes)
• Final Interview (30 minutes)

Life at Ruby Labs

At Ruby Labs, we move fast, aim high, and expect the same from our team. We’re not here to play small—we’re here to build, grow, and win. That means we look for people who are ambitious, driven, and ready to give their best every single day.

This is a place for individuals who thrive under pressure, embrace challenges, and see opportunity in every obstacle. If you’re hungry to achieve, motivated by impact, and want to grow at the speed of your own ambition, Ruby Labs offers the platform to make it happen.

Here, effort is matched with reward. We recognize those who go all in and deliver results, and we create space for people who want more—more responsibility, more growth, and more success.

About Us

We’re building a mental wellness app designed to deliver personalised, accessible, and impactful support to users worldwide. Our mobile app is already live and growing fast, and we’re now looking for a talented Backend Developer to join our team and help take the product to the next level.

The Role

You'll own and evolve the server-side logic that powers our apps — designing and shipping APIs consumed by mobile and web clients, strengthening our microservices ecosystem, and helping us scale reliably and securely. You'll work closely with frontend and mobile engineers, DevOps, and product.

Key Responsibilities
 API & Auth
 

• Design and maintain RESTful APIs for iOS, Android, and web
• Build high-throughput async endpoints
• Implement JWT auth flows and OAuth 2.0 social login (Apple, Google)

Microservices & Architecture
 

• Develop and maintain core services: User, Content, Tracking, Analytics, Notification
• Design stateless, fault-tolerant services for horizontal scaling
• Contribute to Golang services for high-concurrency analytics and notification dispatch

Database & Caching
 

• Write optimized PostgreSQL queries; design schema migrations indexes
• Implement time-based table partitioning for analytics and journal data
• Configure PgBouncer pooling, read/write splitting, and materialized views
• Build and invalidate multi-layer Redis caches (sessions, content metadata, preferences)

Integrations
 

• Apple HealthKit (sleep, HRV, mindful minutes, activity sync)
• In-app purchases: App Store API and Google Play Billing verification
• Push notifications via Firebase Cloud Messaging (iOS & Android)
• Stripe for web subscription payments; Amazon Polly for TTS in meditations

Security & GDPR
 

• GDPR features: data export (JSON), 30-day automated deletion, consent management
• AES-256-GCM encryption for sensitive mental health data fields
• Enforce TLS 1.3, HSTS, Perfect Forward Secrecy; contribute to RBAC and audit logging

DevOps & Quality
 • Maintain Dockerfiles and multi-stage build configs; participate in GitLab CI/CD pipeline
 • Support blue-green deployments and canary rollouts (10% traffic routing)
 • Write unit, integration, and contract tests using pytest

Requirements
Must Have
 • 5+ years backend development in Python
 • Confident working with the Flask and FastAPI frameworks.
 • Experience with Golang, JavaScript, and HTML.
 • VPS management skills on AWS: initial setup, application deployment, performance optimization, updates, security, and monitoring.
 • Experience working with Elasticsearch.
 • Strong PostgreSQL skills: schema design, query optimization, indexing, migrations
 • Redis for caching, session management, and rate limiting
 • JWT authentication, OAuth 2.0, and security best practices
 • Experience with pytest and contributing to CI/CD pipelines
 • Comfortable working in a Docker-based microservices environment
 • Knowledge of GDPR requirements and privacy-by-design practices
 • Proficiency with Git and collaborative workflows (GitFlow)

Main requirements

• 5+ years of experience working with Adroid/Kotlin
• Jetpack Media3 and ExoPlayer expertise for at least 1 year
• Audio Streaming experience on Android for at least 1 year

Requirements

Position name: Senior Android/Kotlin Developer
Level: Senior
Hard skills requirements (including years):

• Jetpack Media3 and ExoPlayer expertise
• Audio streaming via Media3 (remote URL handling)
• MediaSessionService implementation for background tasks
• Audio Focus management (AudioFocusRequest)
• Foreground Service configuration (mediaPlayback type)
• MediaStyle notification integration
• System Media Controls and Lock Screen integration
• Kotlin Coroutines and Flow for async API calls
• SimpleCache implementation for audio persistence
• LoadControl and buffering optimization
• Pre-fetching and lookahead caching logic
• AudioDeviceCallback and "becoming noisy" broadcast handling
• Android Keystore for secure credential storage
• Scoped Storage and Privacy Sandbox compliance
  
  Soft skills requirements:
  - Good communication skills
  - Proactive
  
  Office/Remote: Remote
  Project tasks:
  Implement an audio player component that fetches and plays a remote audio file via the API. Ensure the implementation handles loading states and basic playback controls within the existing UI.
  
  English level: Upper-Intermediate (B2+)

Simplify
Keep energy for life.

The daily quantum leap of technology development requires people to continually upgrade their skills to manage more complicated programs and devices. It consumes time and energy.

We work for simplifying the digital experience of people by making a wide range of functionally excellent IT products that are still intuitively usable. From the landing page for the one-time event up to the total automation of the business.

We work diligently and adequately because we value our and your time and energy.

If you share our principles — we will be pleased to work with You.

Looking for a Senior level Full-stack and Front-end developers experienced in the healthcare domain locally in the US.

Full-stack : Python+React.js or Node.js+React.js
Front-end : React.js or Angular

Location: USA

Longterm project

About Us

We’re building a mental wellness app designed to deliver personalised, accessible, and impactful support to users worldwide. Our mobile app is already live and growing fast, and we’re now looking for a talented Backend Developer to join our team and help take the product to the next level.

The Role

You'll own and evolve the server-side logic that powers our apps — designing and shipping APIs consumed by mobile and web clients, strengthening our microservices ecosystem, and helping us scale reliably and securely. You'll work closely with frontend and mobile engineers, DevOps, and product.

Key Responsibilities
 API & Auth
 

• Design and maintain RESTful APIs for iOS, Android, and web
• Build high-throughput async endpoints
• Implement JWT auth flows and OAuth 2.0 social login (Apple, Google)

Microservices & Architecture
 

• Develop and maintain core services: User, Content, Tracking, Analytics, Notification
• Design stateless, fault-tolerant services for horizontal scaling
• Contribute to Golang services for high-concurrency analytics and notification dispatch

Database & Caching
 

• Write optimized PostgreSQL queries; design schema migrations indexes
• Implement time-based table partitioning for analytics and journal data
• Configure PgBouncer pooling, read/write splitting, and materialized views
• Build and invalidate multi-layer Redis caches (sessions, content metadata, preferences)

Integrations
 

• Apple HealthKit (sleep, HRV, mindful minutes, activity sync)
• In-app purchases: App Store API and Google Play Billing verification
• Push notifications via Firebase Cloud Messaging (iOS & Android)
• Stripe for web subscription payments; Amazon Polly for TTS in meditations

Security & GDPR
 

• GDPR features: data export (JSON), 30-day automated deletion, consent management
• AES-256-GCM encryption for sensitive mental health data fields
• Enforce TLS 1.3, HSTS, Perfect Forward Secrecy; contribute to RBAC and audit logging

DevOps & Quality
 • Maintain Dockerfiles and multi-stage build configs; participate in GitLab CI/CD pipeline
 • Support blue-green deployments and canary rollouts (10% traffic routing)
 • Write unit, integration, and contract tests using pytest

Requirements
Must Have
 • 5+ years backend development in Python
 • Confident working with the Flask and FastAPI frameworks.
 • Experience with Golang, JavaScript, and HTML.
 • VPS management skills on AWS: initial setup, application deployment, performance optimization, updates, security, and monitoring.
 • Experience working with Elasticsearch.
 • Strong PostgreSQL skills: schema design, query optimization, indexing, migrations
 • Redis for caching, session management, and rate limiting
 • JWT authentication, OAuth 2.0, and security best practices
 • Experience with pytest and contributing to CI/CD pipelines
 • Comfortable working in a Docker-based microservices environment
 • Knowledge of GDPR requirements and privacy-by-design practices
 • Proficiency with Git and collaborative workflows (GitFlow)

About Us

We’re building a mental wellness app designed to deliver personalised, accessible, and impactful support to users worldwide. Our mobile app is already live and growing fast, and we’re now looking for a talented Backend Developer to join our team and help take the product to the next level.

The Role

You'll own and evolve the server-side logic that powers our apps — designing and shipping APIs consumed by mobile and web clients, strengthening our microservices ecosystem, and helping us scale reliably and securely. You'll work closely with frontend and mobile engineers, DevOps, and product.

Key Responsibilities
 API & Auth
 

• Design and maintain RESTful APIs for iOS, Android, and web
• Build high-throughput async endpoints
• Implement JWT auth flows and OAuth 2.0 social login (Apple, Google)

Microservices & Architecture
 

• Develop and maintain core services: User, Content, Tracking, Analytics, Notification
• Design stateless, fault-tolerant services for horizontal scaling
• Contribute to Golang services for high-concurrency analytics and notification dispatch

Database & Caching
 

• Write optimized PostgreSQL queries; design schema migrations indexes
• Implement time-based table partitioning for analytics and journal data
• Configure PgBouncer pooling, read/write splitting, and materialized views
• Build and invalidate multi-layer Redis caches (sessions, content metadata, preferences)

Integrations
 

• Apple HealthKit (sleep, HRV, mindful minutes, activity sync)
• In-app purchases: App Store API and Google Play Billing verification
• Push notifications via Firebase Cloud Messaging (iOS & Android)
• Stripe for web subscription payments; Amazon Polly for TTS in meditations

Security & GDPR
 

• GDPR features: data export (JSON), 30-day automated deletion, consent management
• AES-256-GCM encryption for sensitive mental health data fields
• Enforce TLS 1.3, HSTS, Perfect Forward Secrecy; contribute to RBAC and audit logging

DevOps & Quality
 • Maintain Dockerfiles and multi-stage build configs; participate in GitLab CI/CD pipeline
 • Support blue-green deployments and canary rollouts (10% traffic routing)
 • Write unit, integration, and contract tests using pytest

Requirements
Must Have
 • 5+ years backend development in Python
 • Confident working with the Flask and FastAPI frameworks.
 • Experience with Golang, JavaScript, and HTML.
 • VPS management skills on AWS: initial setup, application deployment, performance optimization, updates, security, and monitoring.
 • Experience working with Elasticsearch.
 • Strong PostgreSQL skills: schema design, query optimization, indexing, migrations
 • Redis for caching, session management, and rate limiting
 • JWT authentication, OAuth 2.0, and security best practices
 • Experience with pytest and contributing to CI/CD pipelines
 • Comfortable working in a Docker-based microservices environment
 • Knowledge of GDPR requirements and privacy-by-design practices
 • Proficiency with Git and collaborative workflows (GitFlow)

Main requirements

• 5+ years of experience working with IOS/Swift/SwiftUI
• AVPlayer expertise for at least 1 year
• Audio Streaming experience on IOS for at least 1 year

Requirements

Position name: Senior IOS/Swift Developer
Level: Senior
Hard skills requirements (including years):

• Swift, SwiftUI experience for at least 5+ years
• Advanced AVFoundation expertise
• Audio streaming (AVPlayer and AVPlayerItem) experience
• Audio Session Management (AVAudioSession) experience
• Working experience with State observation (KVO or Combine)
• Experience with Background playback configuration
• Remote Command Center integration (MPNowPlayingInfoCenter and MPRemoteCommandCenter)
• Audio interruption handling
• Swift Structured Concurrency (async/await)
• Caching and persistence (FileManager or URLCache)
• Streaming heuristics and pre-fetching
• Time observers (addPeriodicTimeObserver)
• Audio routing and hardware change handling
• Apple Privacy Manifests compliance
• Secure credential handling (Keychain)

Soft skills requirements:
- Good communication skills
- Proactive

Office/Remote: Remote

Project tasks:
Implement an audio player component that fetches and plays a remote audio file via the API. Ensure the implementation handles loading states and basic playback controls within the existing UI.

English level: Upper-Intermediate (B2+)

About Us: InnovatelU is a dynamic tech company delivering cutting-edge solutions. We're looking for a passionate Java Developer to join our team. If you have a solid Java foundation, are eager to grow, and learn quickly, we want to hear from you! 

Requirements: 
- Strong knowledge of Java 
- Knowledge of Spring (Spring Core, Spring AOP, Spring MVC, Spring Security, Spring Boot) 
- Familiarity with REST APIs, web services 
- Proficiency in version control tools (Git) 
- Experience with build tools like Maven and Gradle 
- Experience with relational databases (PostgreSQL) 
- Expertise in containerization (Docker) 

- Experience in unit and integration testing 
- Strong communication skills and teamwork ability 
- English level: Intermediate or higher 

Will Be a Plus: 

- Solid understanding of design patterns 

- Experience with NoSQL databases like MongoDB and Redis 

- Familiarity with messaging systems like Kafka and RabbitMQ 

- Experience with microservices architecture 

Responsibilities: 

- Collaborate with senior developers and project managers 

- Assist in designing, coding, and testing applications 

- Write well-designed, efficient, and testable code 

- Participate in code reviews 

- Debug and resolve technical issues 

- Contribute to application documentation 

Interview Stages: 

1. Test Task: 1 hour 

2. HR Interview: 30 minutes 

3. Technical Interview: 1 hour 

We Offer: 

- Full Remote 

- Constant support and mentoring 

- Paid 5 working days of sickness per a year; 

- Paid all official Ukrainian holidays; 

- 18 working days of vacation per a year; 

- Opportunity for professional growth and career development 

If this sounds interesting to you, let's talk!

We are looking for a Senior Data Engineer. This is not a standard ETL role. You will work on a high-load system processing 10,000+ executions per minute, building scalable pipelines where AI and LLM logic are embedded directly into production data flows.

The role combines data engineering, backend thinking, infrastructure ownership, and real production AI integration.

What you will do:

• Design and maintain scalable data pipelines in Python on Google Cloud Platform
• Build and optimize AI-driven scoring flows using LLMs for real-time identity enrichment
• Work with BigQuery, Apache Spark, and Apache Iceberg for heavy data processing
• Maintain high-load orchestration with custom Python nodes and complex workflows
• Own deployment and release processes (CI/CD)
• Optimize PostgreSQL performance under heavy load
• Investigate incidents and resolve root causes permanently

• Use AI engineering tools such as Claude in daily development

   

Requirements:

• 4+ years of experience in Data Engineering / Backend Engineering
• Strong Python skills
• Commercial experience with production LLM integration (OpenAI / Anthropic / Gemini)
• Strong knowledge of GCP (Cloud Functions, IAM, Networking)
• Experience with BigQuery, Spark, Iceberg
• Good understanding of Kubernetes
• Experience with workflow orchestration tools (n8n is a strong plus)
• Strong practical knowledge of PostgreSQL

• English level B2+

   

What is important for us:

• Ownership mindset
• Fast learning ability
• Strong problem-solving approach
• Active AI usage in engineering work
• Focus on practical results over unnecessary complexity

We are looking for an Integration Team Lead to own the architecture and reliability of our advertising platform integrations while leading a small engineering team and driving the integration roadmap. In this role, you will design and scale data pipelines that process large volumes of advertising data, ensure stable data synchronization across external marketing platforms, and lead new integration initiatives from API evaluation to production rollout. You will play a key role in shaping the platform’s integration strategy, mentoring engineers, and building scalable, AI-enabled integration solutions that power our core data infrastructure.

Requirements
- 5+ years in backend/data engineering, including 2+ years working with advertising/marketing APIs.
- Hands-on experience with Meta Marketing API and/or LinkedIn Marketing API: real work with rate limits, async reports, breakdowns, attribution windows.
- Strong Python skills: production-grade code with error handling, logging, and tests.
- Experience leading a team (2+ people): code reviews, task planning, growing engineers.
- Solid understanding of data pipeline patterns: idempotency, backfill, incremental sync, schema evolution.
- Experience with GCP or comparable cloud (AWS/Azure) at the service design level.

- Actively use AI-assisted development tools (e.g., Copilot, Cursor, Claude Code) in daily engineering workflows for code generation, debugging, documentation, and data pipeline design, applying sound engineering judgment when validating AI-generated outputs.

Nice to Have
- Knowledge of the Programmatic ecosystem: DV360, The Trade Desk, OpenRTB.
- Experience with BigQuery and/or ClickHouse.
- Pulumi / Terraform for IaC.
- Understanding of advertising metrics: impressions, clicks, conversions, ROAS, attribution models.

Responsibilities
- Own the architecture and evolution of all platform integrations: Meta Marketing API, LinkedIn Marketing API, Programmatic channels (DV360, The Trade Desk, etc.).
- Lead a team of 2-4 engineers: code reviews, sprint planning, mentorship.
- Design and maintain data pipelines: Ad Platform APIs to BigQuery/ClickHouse via Cloud Run Jobs and n8n workflows.
- Ensure data sync reliability: monitoring, alerting, error handling, retry strategies.
- Work with API rate limits, OAuth flows, and webhooks across advertising platforms - Drive new integration projects from API evaluation through production rollout. 
- Collaborate with the product team to prioritize the integration roadmap.

What We Offer

- Fully remote with flexible hours (aligned with EU timezones for syncs).
- Influence on the quality assurance strategy across the entire engineering department.
- A cross-team role with visibility into every part of the product.
- AI-first tooling.
- Claude Code licenses and cutting-edge AI development workflows. 
- A team with no bureaucracy, decisions are made fast.

We are looking for a passionate Full-Stack Software Engineer with extensive experience in PHP and JavaScript who loves engineering and the product creation process. You will be responsible for developing new functionality, integrating different systems, optimizing, and modernizing the existing codebase.

The ideal candidate has experience in:

- PHP 8.X, multiple frameworks and libs;

- JavaScript from vanilla JS to React and ES14;

- HTML, CSS, SCSS, post-processing, scaffolding systems;

- relational databases, DB schema, and queries optimization;

- Linux, docker, CI/DI, bash;

- software engineering principles, architecture patterns, application scalability, low latency system availability;

- experience with cloud platforms such as AWS or Azure;

- problem-solving skills;

- communication and collaboration skills.

You will be responsible for:

- develop, architect, and maintain SaaS using PHP and its frameworks;

- implement frontend using JavaScript (from vanilla JS to modern libs and frameworks), HTML, SCSS;

- create and maintain RESTful APIs (SaaS and Proxy-APIs);

- design and optimize database interactions (PostgreSQL, AWS DynamoDB);

- write clean, testable, efficient, and maintainable code;

- test and debug your code to ensure the reliability and performance of the applications;

- collaborate closely with founders and service folks to deeply understand our customers/users.

Seniority:

- university degree (non-courses/academies; only technical university education);

- minimum 7+ years of actual experience (non «freelance», no gaps, ONLY respect years after a university degree);

- your years in IT don’t guarantee your seniority;

- the slope of your learning is MORE important than your total years in IT, but don’t kid yourself;

- this job vacancy is not for newcomers/juniors/entry/majority-mid level, one framework developer, and ONLY for product development folks.

The position is ONLY for Ukraine citizens. We don’t consider outsourcing, out-staffing, freelancing, or man-in-middle schemes; we only hire in Core Team as Core Team Member.

Join us for a fabulous adventure!

We’re looking for an HR Specialist who is excited to grow in HR and take ownership of both operational processes and employee experience.In this role, you’ll combine hands-on HR administration with people-facing responsibilities. You’ll support employees throughout their journey, coordinate onboarding and adaptation processes, work closely with managers, and help ensure everything runs smoothly behind the scenes.The role requires strong attention to detail, ownership, and willingness to stay hands-on while growing professionally.

How You Will Make an Impact:

• Manage end-to-end onboarding and employee adaptation processes
• Prepare new hires for their first day: access requests, HRIS setup, coordination with IT and stakeholders
• Conduct onboarding meetings and regular adaptation 1:1s with employees
• Support managers during probation periods and gather employee feedback
• Draft and maintain employment contracts and HR documentation
• Ensure employee records and HR systems stay accurate and up to date
• Track HR processes including probation timelines, benefits, and compensation requests
• Coordinate internal HR communications, announcements, and engagement activities
• Support employee experience initiatives, team events, and internal culture projects
• Manage vendors, merch, and internal HR logistics
• Identify process gaps and suggest practical improvements to HR workflows

What Will Help You Succeed:

• 6+ months of experience in HR, People Operations, or administrative roles
• Understanding of core HR processes and employee lifecycle stages
• Experience working with HRIS systems (Hurma, PeopleForce, or similar)
• Strong organizational skills and attention to detail
• Confidence communicating with employees and stakeholders
• Ability to balance operational tasks with people-facing responsibilities
• English at least at B1+ level

What Makes This Role Different:

• Combination of operational HR work and real employee interaction
• Opportunity to grow into broader HR and People Partner responsibilities
• High level of ownership from the beginning
• Direct impact on employee experience and internal culture

Why you’ll love it here:

• Flexible working hours and a remote work setup, so you can plan work around your life and not your life around work!
• Unlimited vacation days and paid sick leave—because your rest matters.
• A competitive compensation that truly reflects your skills and expertise.
• Employee referral bonus and gifts to celebrate your special occasions.
• 50% financial support for learning expenses to supercharge your professional growth!
• A positive atmosphere where you always feel respected and truly belong.
• Inspirational team-building activities that turn colleagues into best friends.
• Wellness benefits: We’ll support your sports passions, from yoga classes to gym memberships.
• Co-working space reimbursement to save your nerves from always working from home :)

We are looking for a skilled and talented Middle Full Stack Engineer (React + Node.js) to join our project.

Requirements:

• 3+ years of software development experience with Javascript, Typescript, ES6.
• Experience with React, NextJS.
• 3+ years of software development experience with NodeJs/NestJs.
• Hands-on experience with GraphQL and PostgreSQL
• Comfort working in a highly agile, intensely iterative software development process.
• Good communication skills. Ability to discuss complex topics with technical and non-technical audiences
• At least an Upper-intermediate level of English (both written and spoken).

Nice to have: 

• MQTT.
• Experience with React Native, and WebSockets.
• Experience working with Startups.
• Experience with Azure, IoT Hub, Microsoft Entra ID.

Responsibilities:

• Work cross-functionally with product, design, and other engineering counterparts to execute on product and business strategy.
• Contribute to the full development cycle: technical design, development, test, experimentation, analysis, and launch. 
• Review code and design docs, give feedback on product specs and mocks.
• Participate with a team of thoughtful, fast-moving, and motivated engineers.
• Contribute to standards that improve developer workflows, recommend best practices.
• Continuously learn and improve your technical and non-technical abilities.

Working conditions and benefits:

• Paid vacation, sick leave (5 days without sickness list)
• Official holidays — 11 days considered public holidays
• Professional growth while attending challenging projects and the possibility to switch your role, master new technologies and skills with company support
• Flexible working schedule: 8 hours per day, 40 hours per week
• Personal Career Development Plan (CDP)
• Paid external training, conferences, and professional certification that meets the company’s business goals

• Internal workshops & seminars

   

Chief Financial Officer (CFO)

We are a fast-growing fintech company with over 8 years of experience building financial infrastructure for digital advertising businesses. We provide solutions that help media buyers and advertisers run campaigns efficiently and without interruptions.

We are seeking a strategic and hands-on Chief Financial Officer to lead the financial function across multiple international entities. This role suits someone who combines high-level strategic thinking with a solid operational foundation in accounting and reporting.

Responsibilities:
 

• Partner with the CEO and COO to shape business strategy and financial planning
• Provide the board with monthly and yearly financial analysis based on reporting to guide strategic direction
• Own reporting, invoicing, and reconciliation logic
• Develop dashboards and automate ongoing data analysis for real-time visibility in close collaboration with the product and engineering teams (proven experience applying solutions is a strong advantage)
• Manage legal entities across the globe (with focus on Europe and the US)
• Manage relationships with auditors, tax advisors, banks
• Manage multi-currency operations, treasury, and cash flow across jurisdictions
• Work with banks, payment systems, financial regulators
• Identify and manage financial risks, inefficiencies, and growth opportunities
• Lead the finance team of 5+ people including setting clear KPIs and ensuring professional development plans are followed through
• Establish efficient communication processes within the finance team and across other departments
   

Requirements:

• 8+ years of experience in finance, with prior experience in a Head of Finance or CFO role
• C1+ English level
• Strong expertise in financial modelling, reporting, and strategic planning across multiple international entities
• Background in SaaS, fintech, or a high-growth tech company is strongly preferred
• Proven experience of efficient managing and developing finance teams - from hiring to following personal development plans
• Experience with automation opportunities in finance operations
• Proven ability to implement scalable systems and lead through periods of growth or change
• Strong communication and people management skills – able to inspire a team while engaging the board
• Comfortable operating in a fast-moving, entrepreneurial environment
   

Nice to have:

• Hands-on experience with AI tools in a finance context
• Hands-on experience with automations (workflows, dashboards)

What we offer:

• Remote work from anywhere
• Full-time
• Unlimited paid vacation days
• 10 paid sick days
• English classes
• Presents from the company

About the Company & Product

We are a rapidly growing product company entering the global gaming entertainment market. Our mission is to bring innovative business solutions to the iGaming industry by developing cutting-edge technology products.

Our core product is a SaaS gaming platform made up of over 200 microservices, delivering a seamless gaming experience to millions of users worldwide. It provides a full suite of iGaming solutions, including game management, payments, analytics, CRM, and more.

We actively scale our B2B direction, we are looking for a Product Owner to help us evolve and scale our platform, drive the development of internal services and modules, and ensure their business value and technical consistency. As a Product Owner, you are responsible for translating product vision and business priorities into a clear, structured, and actionable backlog that the team can confidently deliver.

You act as the single point of entry for requirements into the team, ensuring focus, clarity, and alignment between business goals, product strategy, and technical execution. You work closely with the Product Manager, delivery teams, and stakeholders to maximize product value while maintaining sustainable delivery.

What you’ll be doing

• Own and maintain a prioritized, transparent, and outcome-oriented product backlog;
• Translate product vision and strategic goals into well-defined user stories with clear acceptance criteria, Definition of Ready (DoR), and Definition of Done (DoD);
• Serve as the single source of truth for requirements within the team — filtering incoming requests, removing noise, and preserving focus on high-value work;
• Work closely with the Product Manager to align sprint priorities, success metrics, and expected outcomes;
• Balance business priorities with technical needs to ensure sustainable product evolution without accumulating technical debt;
• Actively participate in sprint ceremonies: refinement, planning, demos, and retrospectives, providing context and clarity to the team;
• Ensure the team clearly understands not only what needs to be built, but why it matters for the product and users;
• Analyze the impact of delivered features using data (adoption, usage, conversion, error rates) and adjust priorities accordingly;
• Communicate status, risks, and expectations clearly to the Product Manager, PMO, and stakeholders;

• Foster a collaborative culture with engineering teams, respecting technical expertise and supporting joint decision-making.

   

You have these superpowers

• 3+ years of experience as a Product Owner or Business Analyst in a product or delivery team;
• Experience in iGaming environment must have (B2B or B2C);
• Proven ability to turn product vision and strategy into concrete, deliverable outcomes;
• Strong backlog management skills — your backlog is always structured, prioritized, and meaningful;
• Ability to explain why a feature matters, not just what needs to be built;
• Solid understanding of Agile and Scrum in practice, with experience supporting stable sprint execution;
• Experience working with product metrics and understanding how to measure feature success (adoption, usage, conversion, impact);
• Strong communication skills and the ability to align business expectations with delivery realities;
• Confidence in working with tools such as Jira, Confluence;

• Ability to balance user value, business priorities, technical constraints, and realistic delivery scope.

   

What We Value in a Product Owner

• You are a product leader, not just a task manager — you see real business and user value behind every user story;
• You translate strategy into action and help the team understand not only what to build, but why;
• You are the single gatekeeper of requirements, protecting the team from chaos and constant context switching;
• You build trust between product and delivery teams, fostering shared ownership and collaboration;
• You understand both business and technology and help find the right balance between value, risks, and technical reality;
• You think in data, not assumptions — decisions are driven by results and impact;
• You stay fully in context — you know the state of your product, sprint progress, and how each step moves the product toward its goals;

• You collaborate closely with the Product Manager and PMO to ensure aligned processes, clear metrics, and a unified delivery system.

   

How We Measure Success

• The backlog is always up-to-date, prioritized, and clearly understood by the team;
• Sprint outcomes deliver tangible value that impacts the product and user experience;
• Sprint Goals are consistently achieved, and delivery metrics (velocity, completion rate, predictability) remain healthy;
• The team understands the context and purpose of their work, resulting in motivated execution without confusion or excessive clarifications;
• Communication between product, technical, and delivery functions is aligned, dependencies are managed proactively, and processes run without chaos.0
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It’s cool to work with us

• Flexible schedule: work from home, the office, or hybrid;
• Extra day off for your birthday: take a break any day within the month;
• Competitive compensation that matches your skills;
• Medical insurance (in Ukraine) and health support;
• 20 paid vacation days + 15 unpaid vacation days;
• 22 sick leave days, including mental health days;
• Gifts and support for life’s key moments (wedding, childbirth, kindergarten);

• Company-provided equipment based on your preferences.

   

We care about your comfort and help you maintain work-life balance!