Jobs at Djinni

✉️ Senior Frontend Engineer (AI-first role) | Remote (Europe) | B2B only

We are currently hiring a Senior Frontend Engineer for a trading / fintech product company working on a high-traffic, production-grade marketing platform serving multiple global locales.

This is a fully remote, Europe-based, B2B contract role only.

🚀 About the role

You will take full ownership of a mature frontend ecosystem built with:

Next.js (App Router), React 19, TypeScript, headless WordPress, and a custom Gutenberg block rendering engine.

The platform supports 30+ locales, real-time market data, and multiple third-party integrations across marketing, CRM, analytics, and personalization tools.

This is a high-responsibility engineering role, not greenfield — you will improve, scale, and optimize an existing architecture used at global traffic level.

🤖 AI-first engineering (core requirement)

This role is designed around AI-native development workflows.

You must be experienced in:

Agentic IDEs (Cursor, Claude Code, Windsurf or similar)
AI-driven multi-file refactoring and feature scaffolding
Context engineering (CLAUDE.md / AGENTS.md / rules for large codebases)
AI-assisted component generation (including Gutenberg block → React mapping)
AI-supported testing (Vitest + RTL with human-level validation)
Ability to detect and reject incorrect or hallucinated AI outputs

👉 Candidates who do not actively use AI as a core part of their workflow will not be considered.

🧩 Key responsibilities
Own frontend architecture, performance, and scalability
Work with headless WordPress + Gutenberg block system
Build multi-locale routing (next-intl, domain-based structure)
Integrate real-time market data via WebSockets / SignalR
Manage third-party integrations (GTM, CRM, analytics, personalization tools)
Ensure Core Web Vitals, SEO, and performance optimization
Work with CI/CD pipelines (Azure DevOps, Docker, AWS ECR)
Maintain design system consistency (Figma → code, tokens, Tailwind)
Write and maintain tests (Vitest, Testing Library)
🧠 Must have
5+ years frontend experience
Strong Next.js (App Router, SSR, ISR, RSC)
Advanced TypeScript in large-scale projects
Experience with headless WordPress + REST API
Multi-locale / i18n architecture experience
SWR for data fetching
WebSockets / real-time data handling
Strong understanding of SEO + Core Web Vitals
Experience working with design systems (no ad-hoc styling)
🌍 Location & contract
Europe-based candidates only
Fully remote
B2B contract only
📩 Apply / contact

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+)

Our client is a leading global Financial markets data provider who runs a number of change programs to deliver of high-quality software that connects Financial Markets across the globe in a real-time, high frequency and low-latency data management chain.
This position is for a Senior Software Engineer who will be accountable for the design, development and delivery of SDK or API layer which interacts with real-time market data platform for distribution of financial data. You will work with local/remote development team(s), product owner and architecture to define software requirements, do a technical design and implement software solutions. In this role, you should be able to work independently but reach out to consult with senior developers and manger in a timely fashion to clarify any doubts. Your overall goal will be to develop high-quality, open source software that is aligned with user needs and business goals. You should have excellent problem-solving skills. If you have hands-on experience in software development and agile methodologies, we'd like to meet you.
 

• Responsibilities:

  • Develop high-quality software, with design, and functional documentation
  • Provide estimates for specific software feature implementation
  • Build unit tests for source code and review QA test plans
  • Identify, prioritize and execute tasks in the software development life cycle
  • Develop and maintain tools and applications by producing clean, efficient code that follows open sourcing standards
  • Automate tasks through appropriate tools and scripting
  • Optimized code by using tools to identify bottlenecks and make fixes in code
  • Perform validation and verification testing
  • Collaborate with internal teams and vendors to fix and improve products
  • Collaborate with support to isolate issues in product and make fixes
  • Ensure software is up-to-date with latest technologies and standards
   

• Mandatory Skills Description:

  • Proven experience as a Senior Software Engineer with extensive experience in software development.
  • 5+ years of object oriented development, in particular C++
  • Strong knowledge of selected programming languages: C, C++, Java, Python.
  • Familiarity with various operating systems (Linux, Windows) and cross platform development.
  • Knowledge of web socket and JSON frameworks
  • Knowledge of TCP/IP and UDP multicast network protocols
  • Knowledge of git, GitHub, or, other source control system
  • Analytical mind with problem-solving aptitude
  • Ability to work independently

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