Jobs at Djinni

Lead Generation Manager (on-site)

We're a fast-growing tech company building modern, innovative digital products - and we're looking for a driven Lead Generation Manager to join our team in Lviv. If you know how to find the right clients, build meaningful connections, and turn cold outreach into warm conversations - we'd love to hear from you.

What you'll be doing

You'll be responsible for building and executing lead generation strategies that bring new business opportunities to the company. Working closely with the sales and management team, you'll identify potential clients, initiate contact, nurture relationships, and help fill the pipeline with quality leads. You'll be representing a team that delivers web applications, mobile apps, and AI-powered solutions - so understanding the IT services market will be a real advantage.

What we're looking for

Lead Generation & Outreach

• Proven experience in lead generation, sales development, or business development in the IT industry
• Hands-on experience with outreach platforms and tools (LinkedIn Sales Navigator, Upwork, Apollo, Hunter.io, or similar)
• Ability to craft personalized, compelling outreach messages that get responses
• Experience building and managing prospect lists and outreach sequences

Communication & Sales

• Strong written English - you'll be communicating with international clients daily
• Ability to identify client needs and clearly articulate the company's value proposition
• Experience qualifying leads and handing them off to the sales or account management team
• Comfortable with follow-ups and managing long outreach cycles without losing momentum

General

• Self-motivated, results-driven, and able to work with measurable KPIs
• Organized, with experience managing outreach pipelines in CRM tools
• Proactive mindset - you don't wait for leads to come to you

What we offer

• Full-time, in-office position in Lviv
• Official employment and a competitive salary based on your skills and experience
• Company-provided equipment
• A well-structured work schedule
• A collaborative team of experienced professionals
• Clear KPIs and performance-based growth opportunities
• Interesting work at the intersection of sales, tech, and business development

How to apply

Send us your CV - we review every application and get back to candidates promptly. This could be the start of something great.

About us:
 

BetterMe — a global wellness ecosystem empowering millions to become better — physically, mentally, and emotionally. We build what makes people better and keep challenging ourselves to inspire others.
 

Your impact:

• Execute, manage, and optimize large-scale advertising campaigns across Google Ads, with a strong focus on Demand Gen campaigns.

• Develop and implement effective user acquisition strategies focused on performance and scalability.

• Work closely with video creatives for YouTube and Demand Gen campaigns, including creative performance analysis, hypothesis generation, and creative testing.

• Create clear briefs and collaborate with motion designers and creative teams to develop high-performing ad creatives.

• Conduct in-depth keyword, audience, competitor, and creative research to identify growth opportunities.

• Manage campaign budgets, bidding strategies, and performance optimization to maximize ROI and business impact.

• Analyze campaign and creative performance, identify trends, and proactively drive improvements based on data insights.

 

About you:

• 4+ years of hands-on experience managing and optimizing Google Ads campaigns.

• Recent hands-on experience with Demand Gen campaigns within the last year.

• Strong understanding of video-first advertising approaches, especially for YouTube and Demand Gen campaigns.

• Strong knowledge of Google Analytics, Google Ads metrics, attribution models, and performance analysis.

• Experience working with the creative side of performance marketing campaigns and scaling acquisition strategies.

• Intermediate+ level of English or higher.

• Strong analytical thinking, attention to detail, and a data-driven approach to decision-making.

• Results-oriented mindset with strong business and performance focus.

• Ability to work independently, prioritize effectively, and drive initiatives proactively.
 

Will be a plus:

• Experience with Facebook/Instagram Ads, DV360, TikTok Ads, Bing Ads, or other paid acquisition channels.

• Experience working with video creatives across multiple paid acquisition platforms.

What you get at BetterMe:
 

A mission that inspires. Every line of code, every design, every idea helps millions of people become healthier and more confident.
Trust without micromanagement. You manage your time and make decisions independently. We value outcomes, not online hours.
Growth opportunities. 90% of our leads have grown within the company. There’s space for initiative, new responsibilities, and real career upgrades.
Flexible work format. Choose what works best for you — office, remote, or hybrid.
Wellness in practice. Offline: workouts with professional trainers in our corporate gym, massage, corporate lunches, sports, and team activities — everything you need to recharge and reset together. Online: regular online workouts, partner discounts, and free access to our products.
Health insurance & corporate doctor.
Open communication. Transparency across teams, honest feedback, and support for initiatives are part of our everyday culture.
Support for sports events. We cover entry fees and encourage the team to compete and participate together.
Modern equipment. We provide new hardware and everything you need for productive work.
Legal & finance support. Experienced lawyers and financial specialists are always there to help — from documents to personal consultations.
An ambitious environment that gets recognized. Over the past two years, the BetterMe team has doubled in size, and we were named among Forbes’ Top 10 Best Places to Work in 2026.

We're a fast-growing tech company building modern, innovative digital products — and we're looking for a Full-Stack Developer to join our team in Lviv. If you're comfortable on both sides of the stack, enjoy owning features end-to-end, and want to work in a team that values engineering quality, we'd love to hear from you.

What you'll be doing

You'll work as part of a cross-functional team to build and maintain full-stack features — from crafting responsive, user-friendly interfaces to designing scalable server-side architecture and APIs. Our frontend stack includes React, Next.js, TypeScript, Redux, GraphQL, SCSS, Material-UI, and Webpack. On the backend, we work with Node.js, Express, NestJS, PostgreSQL, MongoDB, JWT, Socket.IO, AWS (DynamoDB, S3, EC2), Firebase, and Heroku. We also integrate with third-party services such as Twilio, SendGrid, Google Maps, MapBox, and WebRTC.

What we're looking for

Frontend

• Solid experience with React and modern React hooks
• Confident use of modern JavaScript (ES6+) and TypeScript
• Strong command of HTML5, CSS3, and SCSS
• Experience with Redux or other state management tools
• Ability to build responsive, cross-browser compatible layouts

Backend

• Solid hands-on experience with Node.js
• Practical experience with Express.js and/or NestJS
• Experience working with ORM tools
• Proficiency in SQL databases (MySQL / PostgreSQL) and NoSQL databases
• Experience designing RESTful APIs and integrating with third-party services

General

• Experience with Git and version control workflows
• Ability to work across the full product lifecycle — from feature design to deployment
• Responsible, self-motivated, and comfortable working both independently and as part of a team

What we offer

• Full-time, in-office position in Lviv
• Official employment and a competitive salary based on your skills and experience
• Company-provided equipment
• A well-structured work schedule
• A friendly, supportive team and a comfortable office environment
• Mentorship and guidance from experienced colleagues
• Interesting and technically challenging projects to grow on

How to apply

Send us your CV — we review every application and get back to candidates promptly. This could be the start of something great.

We are looking for a Senior Data Engineer to work ona  modern data platform project focused on processing and enriching data from multiple external sources to support advanced analytics, ML workflows, and business decision-making.

We’re looking for someone with strong experience in:
• Python
• SQL
• Snowflake
• dbt
• Databricks / PySpark
• ETL/ELT pipelines
• Production-grade data systems
• ML / analytics-related data workflows

It’s a fully remote role within Europe or LATAM, with flexible working hours and long-term collaboration opportunities.

Akvelon works with clients such as Amazon, Reddit, Pinterest, Starbucks, LinkedIn, Intel, and many others, offering strong engineering culture, professional growth, certifications, workshops, and internal learning programs.

Would you be open to a quick chat to discuss the opportunity in more detail?

About us:

ARRISE sets the benchmark for service delivery and excellence in the iGaming industry. Playing a key role in the success of its clients, which include Pragmatic Play, a brand relied upon by the world’s biggest online casinos for its cutting-edge products, ARRISE helps to deliver exceptional gaming experiences to millions of players worldwide.

Our global team of talented and driven professionals are shaping the future of iGaming. Headquartered in Gibraltar, we have offices spanning Canada, India, the Isle of Man, Latvia, Malta, Romania, Serbia, Bulgaria, and the UAE, and more exciting destinations on the horizon.

At ARRISE, we take pride in creating growth opportunities at all levels, constantly investing in our people while welcoming new colleagues and forging strategic partnerships that open new opportunities for success. 

To achieve this, we bet on ourselves. We know that success is a collective effort, and our team is driven by ambition, collaboration, and a shared commitment to grow and succeed—while embracing every step of the journey.

Be part of the future of iGaming with ARRISERS! See a job that excites you? Apply now, and our friendly recruitment team will connect with you soon. Your journey starts here!
 

Requirements: 

• 5+ years of PostgreSQL, Pg/SQL development experience. 
• Oracle SQL, PL/SQLL development experience will be a big plus. 
• Shredding, changing and understanding older code without the need to know everything about a business process is imperative. 
• Query performance analyzing and tuning. 
• Experience with high loaded OLTP systems. 
• Experience with very large databases. 
• Experience with design, development, and maintenance of reporting and data warehouse databases a plus. 
• Experience with migrating schemas and data from Oracle to other RDBMS a plus. 
• Basic DB administration experience. 
• Familiarity with database design, documentation and coding. 
• Familiarity with programming languages API. 
• Problem solving skills and ability to think algorithmically. 
• Experience with Amazon Redshift, RDS, Aurora is a plus. 

General skills: 

• English (reading/writing/speaking) — min Intermediate level. 
• Experience in working with people. 
• Quick understanding and learning abilities. 
• Ability to work on several tasks in parallel. 

 
Responsibilities: 

• Responsible for designing, coding, and implementing software solutions using modern techniques and programming SQL language. 
• Provides high-level database development assistance in creating specific applications for businesses. 
• Provides general support on information technology to design, develop, execute, and maintain the database application systems, applying several RDBMS. 
• Ensures research and innovation at all levels of the software development process. 
  May participate in multiple projects simultaneously as a senior development team member. 
• Works harmoniously in a cross-functional team comprising managers, supervisors, business analysts, systems personnel, network staff, and other developers in ensuring the delivery of software solutions as planned, within set budget, and timely. 
• Acts as a coach or mentor to junior software developers. 
• Provides excellent customer service by responding to and assisting with help desk calls to resolving issues, including system outages. 

Company offers: 

• Long-term employment. 
• Flexible timetable. 
• Comfortable working conditions. 
• Paid vacation and sick leaves. 
• English lessons, gym. 
• Competitive salary level. 

About us:

ARRISE sets the benchmark for service delivery and excellence in the iGaming industry. Playing a key role in the success of its clients, which include Pragmatic Play, a brand relied upon by the world’s biggest online casinos for its cutting-edge products, ARRISE helps to deliver exceptional gaming experiences to millions of players worldwide. 

Our global team of over 6,000 talented and driven professionals are shaping the future of iGaming. Headquartered in Gibraltar, we have offices spanning Canada, India, the Isle of Man, Latvia, Malta, Romania, Serbia, Bulgaria, and the UAE, and more exciting destinations on the horizon. 

At ARRISE, we take pride in creating growth opportunities at all levels, constantly investing in our people while welcoming new colleagues and forging strategic partnerships that open new opportunities for success. 

To achieve this, we bet on ourselves. We know that success is a collective effort, and our team is driven by ambition, collaboration, and a shared commitment to grow and succeed—while embracing every step of the journey. 

Be part of the future of iGaming with 6,000 ARRISERS! See a job that excites you? Apply now, and our friendly recruitment team will connect with you soon. Your journey starts here!   

Requirements: 

• Requires 4 or more years of related experience, maintenance, and administration of PostgreSQL databases.   
• Previous SQL Server and/or Oracle database administration experience is a plus.  
• Strong writing and verbal communication skills.   
• Displays excellent collaborative skills with cross-functional teams.  

Responsibilities:  

• The DBA should have knowledge of some industry standard PostgreSQL databases including creation and implementation of fully functional PostgreSQL database clusters (both in the cloud AWS RDS and on-premises), ability to maintain multiple development, QA, and production PostgreSQL environments with experience in performance tuning.  
• Review existing configurations and installations and provide design decisions for improvements to platform environments.  
• Assist in planning and performing PostgreSQL database upgrades and migrations.  
• Perform production level support and be part of the on call rotation when required.  
• This position will be responsible for supporting new and existing PostgreSQL database systems, both internally and future Cloud managed instances and will contribute in defining best practices in database administration, and introduce innovation with automation.  
• Proficient with the Linux operating systems - Ubuntu, RHEL.  
• Assist in implementing long-term strategic goals for database development in conjunction with end users, managers, clients, and other stakeholders.   
• Perform debugging, tuning, and performance enhancement as well as automation of operational and continuous integration aspect of the PostgreSQL platform.  
• Independently analyzes, solves, and corrects issues in real time, providing problem resolution end-to-end.  

Company offers: 

• Long-term employment; 
• Flexible timetable; 
• Comfortable working conditions; 
• Paid vacation and sick leaves; 
• English lessons, gym; 
• Competitive salary level. 

Job Description

• Master’s degree in Computer Science, Data Science, Applied Mathematics, or a related field.
• 8+ years of professional experience in machine learning, data science, or AI engineering.
• Proven experience as a technical lead or solution architect for ML/AI projects, with accountability for end-to-end delivery in a production environment.
• Strong proficiency in Python and the modern ML/AI ecosystem (e.g., PyTorch, Hugging Face, LangChain/LangGraph, Scikit-learn).
• Hands-on experience with data ingestion, RAG pipeline optimization, model evaluation, deployment (MLOps), and monitoring.
• Deep understanding of generative AI (LLMs, embeddings, RAG, prompt engineering, and agentic reasoning) and its practical constraints (latency, cost, safety, hallucinations).
• Experience turning complex business needs into "machine-ready" technical specifications and acceptance criteria.
• Strong experience with major cloud platforms; hands-on knowledge of AWS (e.g., Amazon Bedrock, SageMaker) or GCP (e.g., Vertex AI) is highly desirable.
• Evidence of using modern GenAI tools (Claude Code, GitHub Copilot, etc.) to significantly accelerate your development and testing process.

Job Responsibilities

Advanced Recommendation Modeling: Design and deploy recommendation algorithms that account for time-decay, breaking news signals, and short-term user intent, distinguishing them from long-term preference models used in streaming.
Generative AI Integration: Lead the development and integration of Gen AI and LLM-based models to enhance content summarization, semantic search, and personalized news briefings.
Signal Processing: Engineer complex feature sets that weigh recency, topic sensitivity, and contextual relevance (e.g., differentiating between a user following a specific stock ticker vs. a general sector interest).
Model Lifecycle Management: Own the end-to-end lifecycle of ML models, from hypothesis and training to A/B testing, deployment, and monitoring in a high

Responsibilities

• Be a point of contact for Mid-tier viewers and broadcasters
• Qualify and acknowledge the issues Tango users report, and resolve them in a timely manner, via text communication channel (Intercom, no voice calls)
• Fulfill a workload of 15 tickets per hour with a 5 min first response time SLA
• Record the issues users are experiencing in a task tracking tool (JIRA)
• Gather feedback and propose improvements to user experience
• Achieving good results in personal KPIs and helping teammates do the same.

Requirements

• Prior experience in customer service (1+ years)
• Exceptional English (B2+) with professional tone in written communication
• A desperate urge to help and teach, ability to empathise with customers.
• Competent speech, the ability to make yourself understood
• A responsible team player

• Multi-tasker and performer able to show and report results

   

As a plus:

• Knowledge of additional languages (Arabic, Turkish, Spanish) will be a plus
• Prior experience with helpdesk systems (Zendesk, Intercom, etc) is a plus
• Experience with task tracking tools (Jira, YouTrack, Confluence) is a plus
• Prior experience and success as a live streaming broadcaster is a huge plus!

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 package, including sports coverage, elite medical insurance for you and family;
• 20 working days paid vacation and 100% sick leave coverage;
• Opportunities to make a difference, to develop and grow;
• Regular corporate celebrations, team building, 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.

Description:

We are the creators of a new fintech era!
Our mission is to change this world by making blockchain accessible to everyone in everyday life. WhiteBIT is a global team of over 1,200 professionals united by one mission — to shape the new world order in the Web3 era. Each of our employees is fully engaged in this transformative journey.
We work on our blockchain platform, providing maximum transparency and security for more than 8 million users worldwide. Our breakthrough solutions, incredible speed of adaptation to market challenges, and technological superiority are the strengths that take us beyond ordinary companies. Our official partners include the National Football Team of Ukraine, FC Barcelona, Lifecell, FACEIT and VISA.


The future of Web3 starts with you: join us as a Junior Talent Manager!

Requirements:

— Experience in preparing and structuring vacancy requirements;
— Understanding of role seniority levels and ability to differentiate between Junior, Middle, and Senior specialists based on responsibilities, skills, and expectations;
— Strong organizational and coordination skills;
— Ability to manage multiple processes simultaneously;
— Good communication skills and stakeholder management;
— Analytical thinking and attention to detail;
— Upper-Intermediate+ English level.

Responsibilities:

Talent Demand & Hiring Process:
— Collect and consolidate data on job openings from hiring managers
— Transfer job opening requests for salary analytics
— Gather and validate budget information for open positions from hiring managers
— Coordinate budget alignment with hiring managers based on salary analytics results
— Facilitate the approval process, ensuring all required approvals are obtained
— Monitor and update the status of job applications throughout the process

Internal Talent Search & Talent Pool:
— Work with the internal Talent Pool to identify relevant candidates for open positions
— Support internal search processes, including collecting applications and initial candidate communication
— Coordinate internal interview processes between candidates and hiring managers

Employee Rotations:
— Support or manage employee rotations within one or two departments
— Identify potential internal opportunities aligned with employee profiles
— Coordinate communication between employees and managers during rotation processes
— Ensure smooth execution of rotations in successful cases
— Maintain and update rotation-related reporting

Would be a plus

— Experience in HR, Talent Management, or Operations
— Experience working with internal mobility or recruitment processes
— Familiarity with HR systems and tools

Language proficiency:

English — (Upper-Intermediate (B2))

Ukrainian — (Native)

Work conditions:

Immerse yourself in Crypto & Web3:
— Master cutting-edge technologies and become an expert in the most innovative industry.

Work with the Fintech of the Future:
— Develop your skills in digital finance and shape the global market.
Take Your Professionalism to the Next Level:
— Gain unique experience and be part of global transformations.
Drive Innovations:
— Influence the industry and contribute to groundbreaking solutions.

Join a Strong Team:
— Collaborate with top experts worldwide and grow alongside the best.

Work-Life Balance & Well-being:
— Modern equipment.
— Comfortable working conditions, and an inspiring environment to help you thrive.
— 24 calendar days of paid leave.
— Additional days off for national holidays.

With us, you’ll dive into the world of unique blockchain technologies, reshape the crypto landscape, and become an innovator in your field. If you’re ready to take on challenges and join our dynamic team, apply now and start a new chapter in your career!
Let’s Build the Future Together!

WhiteBIT offers all candidates an equal opportunity to join the team. All hiring decisions are made without regard to race, national origin, gender identity or sexual orientation, age, religion, disability, medical condition, marital status, familial status, veteran status, or any other legally protected characteristic of an individual.

We’re currently looking for a Product Manager to join the product SaaS team at G-MOS — a product from the Promodo ecosystem.

G-MOS is a SaaS platform that helps businesses scale Google Ads through automation and smart product workflows. We’re looking for a Product Manager with PPC understanding who wants to build next-generation products for performance marketers and e-commerce businesses.

Must-have qualifications:

• 2+ years of experience in Product Management
• Understanding of PPC channels and platforms: Google Ads, Meta Ads, Amazon Ads, Bol.com Ads
• Strong experience in product roadmapping and planning, including defining product vision and aligning it with business goals
• Proven skills in backlog management and prioritization, ensuring clarity, focus, and value-driven delivery
• Hands-on experience across the full product lifecycle, from product discovery and validation to delivery and launch
• Excellent stakeholder communication skills, with the ability to align expectations and collaborate effectively across teams
• English B2+ (spoken & written)
• Strong desire to build next-generation products
• Interest in AI: you regularly test new AI features and tools and understand where they add value

This role is a great match if you:

• Understand how PPC specialists work and think
• Can translate business and user needs into clear product solutions
• Care about usability, scalability, and measurable impact
• You’re comfortable working in a fast-growing, product-driven SaaS team

Key responsibilities:

• Work closely with the development team, marketing, and CEO
• Run customer development (custdev) interviews and gather continuous feedback
• Conduct market and competitive research
• Define and own the product roadmap and backlog
• Write clear product requirements (PRDs, user stories, acceptance criteria)
• Build new features and optimize existing workflows, including AI-powered ones
• Improve the current product UX in collaboration with design and development
• Contribute to and evolve the long-term product development vision

What we offer:

• fully remote setup: Monday-Friday, 9:00/10:00-18:00/19:00 (Kyiv time);
• work with a SaaS product in the active scaling phase, with proven product — market fit and a clear value proposition for customers;
• fast professional growth opportunities;
• close collaboration with a strong, experienced team, where your ideas and initiatives genuinely shape processes;
• timely and transparent compensation;
• paid vacation and sick leave — we support a healthy work—life balance and believe that rest and recovery are just as important as results.

Apply now and join the team!

We are looking for a Senior Full-Stack Software Engineer to join a long-term AI-focused product project for an international client.

This opportunity is ideal for engineers who enjoy building modern cloud-native applications and working with AI-driven systems, LLM integrations, and agentic workflows.

Tech Stack

• TypeScript
• Node.js
• React / Next.js
• Google Cloud Platform (GCP)
• AI/LLM-integrated systems
• Agentic harness / AI agents orchestration

Responsibilities

• Build and scale full-stack applications using TypeScript
• Develop backend services, APIs, and frontend features
• Work with cloud infrastructure and services on Google Cloud
• Contribute to architecture and technical decision-making
• Collaborate with distributed engineering and product teams
• Participate in development of AI-powered workflows and automation systems

Requirements

• Strong commercial experience with TypeScript and Node.js
• Solid full-stack engineering background
• Experience with modern frontend frameworks
• Hands-on experience with cloud platforms, preferably GCP
• Ability to own features end-to-end
• Strong system design and problem-solving skills
• Experience with AI/LLM products is a strong plus
• Startup or product-company experience is nice to have

We create technology you can feel — touch-sensitive, intuitive solutions for retail, HoReCa, and smart spaces. Our products combine hardware, software, and emotions, changing the way people interact with technology.
We are looking for a International Sales Manager to help scale Neuroshop in global markets and build partnerships with forward-thinking companies.

What you will do
Sell our products to B2B customers in Ukraine market
Manage the entire sales cycle — from lead generation to contract signing.
Present our solutions to customers and partners.
Collaborate with product, marketing, and technical support teams.

What is important
2+ years of experience in international sales (SaaS, IoT, Hardware, or Tech Solutions).
Ability to translate complex technologies into understandable business value.
Working with CRM (HubSpot, Pipedrive)
LinkedIn Sales Navigator
Outreach platforms (Apollo)
Ability to create and manage outbound email and LinkedIn campaigns and A/B tests

Understanding of the B2B sales funnel, qualification, and sales frameworks
CRM discipline, creative thinking, communication skills.
Candidate should live in Europe

What we offer
Work with an innovative AI product that is shaping a new era of retail.

Remotely format
Competitive salary + performance-based bonuses.

Neuroshop is a technology you can feel

If you see sales not just as deals, but as a way to create connections between people and technology, we are waiting for you.

The Slot Frontend Engineer is the slot-client authority across Whimsy's slot-development engagements. The role builds and maintains the slot-game client codebase from scratch and owns it through integration, launch, and live operations.

Technical Constraints

• Language: TypeScript
• Renderer: PixiJS v8
• Animation: Spine-Pixi v8 (skeletal), GSAP (tweening)
• Build tool: Vite
• HTTP client: Axios
• Architecture: strict 5-layer separation + typed HFSM at gameplay layer
• Platform integration: third-party slot SDK via pluggable BackendAdapter only
• Regulatory model: jurisdiction-aware client behaviour via configuration (no code rewrites per market)
• Version control: Git
• Target platforms: modern mobile browsers (iOS Safari, Android Chrome) + desktop browsers in use
  
  Responsibilities
• Own the slot-client codebase.
• Own the typed HFSM modelling the slot spin lifecycle, including free spins, bonus rounds, and error / recovery transitions.
• Own the offline mocked backend used for development, QA.
• Own jurisdiction-aware compliance UI: a single client able to satisfy the rule set of different markets under audit without per-market code forks.
• Own session recovery and reconnection behaviour for mid-spin, mid-free-spins, and mid-bonus states.
• Own client-side performance budgets and the asset, atlas, and texture-memory strategy.
• Author and maintain frontend technical documentation: layer contract, HFSM state and transition diagrams, asset manifests, jurisdiction-profile schema.
• Actively use and document the use of AI tools (ChatGPT, Gemini, Claude) for scaffolding, refactor proposals, and documentation. Document outcomes alongside prompts so the workflow is reproducible by the team.

Requirements

• Strict layered architecture: Presentation / HFSM / Domain / Network / Platform; cross-layer access is Non-Compliance.
• Typed HFSM for slot lifecycle (idle, bet, spin request, etc.).
• Robust session recovery: correct resume mid-spin, mid-free-spins, mid-bonus without state inconsistency.
• Full externalisation of game data: paytables, reel strips, RTP, jurisdiction profiles, feature flags must be server/config-driven.
• PixiJS v8 slot rendering for mobile/desktop within performance budgets, with no visual artifacts during reels, cascades, or bonus flows.
• Spine-Pixi v8 expertise for skeletal animations (symbols, characters, bonus presenters), including layered states and event hooks.
• GSAP orchestration for complex sequences: spin-stop, win reveal, cascades, jackpots, bonus entries.
• Tunable animation parameters (easing, timing, anticipation, win effects).
• Asset strategy: atlases, texture packing, and memory-optimized loading for mobile draw-call and RAM constraints.
• Server-authoritative model: client never controls outcome, RNG, balance, or probability.
• Jurisdiction rules must be configuration-based, not code changes per market.
• No secrets/keys/SDK credentials in source, fixtures, or Git history.
• Performance targets: 60 FPS mid-tier mobile, 30 FPS minimum on low-end devices.
• Defined bundle-size and cold-load budgets under poor network conditions.
• Profiling expertise for rendering, animation, and runtime bottlenecks.
• Knowledge of GPU/render optimization: atlases, sprite sheets, render textures, instancing, and their trade-offs.
• Network resilience: timeouts, exponential backoff, idempotent retries (BackendAdapter), deterministic behaviour under packet loss, mid-spin disconnect/reconnect.
• Observability: structured client logging with correlation IDs for spin-level backend tracing.

Nice to have

• Experience with regulated slot / iGaming frontend
• Live ops: jackpots, tournaments, campaigns, A/B tests
• Localization: RTL, CJK support
• Remote config + A/B testing for mechanics and UX
• CI/CD pipelines (lint, type-check, tests, build, deploy, environments)
• Strong Git discipline (atomic commits, PR hygiene)
• Technical documentation: layer contracts, HFSM diagrams, runbooks (English)

What We Offer

• Greenfield backend - you design the architecture, choose the stack, own the outcome
• Small focused team: no bureaucracy, direct access to decision-makers
• Fully remote, async-friendly
• Competitive compensation, discussed individually
• A product that ships - not an endless pre-production

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.

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+)