Jobs at Djinni

We’re hiring RL Environments Engineers to design and build MLE/SWE environments that deliver high-quality, diverse tasks with minimal supervision. You will target a specific language model, meet a defined difficulty distribution, and deliver about one task every 10 hours. This is a remote contractor role with ≥4 hours overlap to PST and advanced English (C1/C2) required.

Responsibilities

• Design and build MLE/SWE environments and diverse tasks.
• Target a specified language model and satisfy the required difficulty distribution.
• Deliver ~1 task per 8-10 hours once onboarded.
• Edit tasks within 24 hours based on customer feedback.
• Onboard quickly and start delivering on day one with minimal supervision.
  
   

Requirements

What we’re looking for (must-haves)

• Strong Python (engineering-quality, not notebook-only).
• Hands-on LLM/GenAI work in production: you’ve shipped and operated real systems (not “wrapped an API and called it AI”).
• Strong product/engineering ownership: comfortable building, fixing, and scaling end-to-end pipelines.
• Docker + production mindset (debugging, reliability, iteration speed).
• ≥4 hours PST overlap and advanced English (C1/C2) for specs, reviews, and feedback.
• Ability to meet throughput expectations and respond quickly to feedback.
   

Strong signals (nice-to-have, big plus)

• Experience designing environments/tasks for RL and/or evaluations.
• Experience in high-stakes or regulated domains (e.g., healthcare, finance, fraud/risk, safety-critical systems).
• ML systems experience: CI/CD, monitoring, evaluation harnesses, MLOps, scalable pipelines.
• Systems depth: C++/Rust/Scala/Java, performance/infra optimization, distributed systems.
• Exposure to RL / bandits / agentic systems (not required, but a strong signal).
   

Not a fit if

• You’re primarily a prompt engineer without strong ML/engineering foundations.
• You’re a research-only / academic-only profile with little or no shipping/production ownership.
• You’ve only built in notebooks or rely heavily on managed AutoML tools.
  
   

Working Conditions

• Remote, independent contractor engagement.
   
• 40 hours/week - full time - need 4 hours overlap in the working hours with the team in Pacific time zone;
• Deliverables-driven; begin shipping on day one.

Conversion & relocation: Potential path to FTE and relocation to the Bay Area if performance and mutual fit align.
 

We're hiring Low-Level Engineers to design and build RL environments that teach LLMs kernel development, hardware optimization, and systems programming. The goal is to create realistic feedback loops where models learn to write high-performance code across GPU and CPU architectures.

This is a remote contractor role with ≥4 hours overlap to PST and advanced English (C1/C2) required.

Requirements

Minimal Qualifications

• Strong Python (engineering-quality, not notebook-only)
• Production mindset (debugging, reliability, iteration speed)
• Clear understanding of LLMs, their current limitations
• Ability to meet throughput expectations and respond quickly to feedback

You may be a good fit if one of the following applies

• Deep understanding of memory hierarchies (registers, L1/L2/shared memory, HBM, system RAM) and their performance implications
• Threading models, synchronization primitives, and concurrent programming (warps, thread blocks, barriers, atomics)
• Cache coherence, memory access patterns, coalescing, and bank conflicts
• JIT compilation frameworks (e.g., Triton, JAX/XLA, TorchInductor, Numba)
• AOT compilation and optimization passes (LLVM, MLIR, TVM)
• Compiler and kernel frameworks such as CUTLASS, BitBLAS, or JAX/Pallas
• Modern C++, including templates, concurrency, and build systems
• Assembly-level programming and low-level optimization across GPU and CPU architectures (e.g., x86, ARM, NVIDIA Hopper, NVIDIA Blackwell)
• Debugging and optimizing GPU kernels using CUDA and/or HIP/ROCm
• Developing PyTorch custom operators, backend extensions, or dispatcher integrations (e.g., ATen, TorchScript, or custom backends)
• Customizing, extending, or optimizing c, including distributed inference workflows
• GPU communication libraries and collectives, such as NVIDIA NCCL, AMD RCCL, MPI, or UCX
• Mixed-precision and low-precision kernels (e.g., FP16, BF16, FP8, INT8), including numerical stability and performance trade-offs

We’re looking for our best C++ Developer in Slovenia with experience in backend development and excited about growing as a professional.

REQUIREMENTS:

• Bachelor’s/Master’s degree or equivalent in Computer Science or a related discipline
• Over 3 years of C++ development , design or equivalent combination of education, skills and experience
• Practical knowledge of Linux platform is a must
• Practical knowledge of Windows platform
• Experience with STL (Boost and similar libraries)
• Working knowledge of OOP, design patterns, classical algorithms and data structures
• Good understanding of multithreading programming and networking
• Knowledge of memory dumps analysis is an advantage
  Knowledge of various processes and methods of software development
• Working knowledge of SQL is an advantage
• Demonstrated record of delivering high quality software products to market
• Strong problem-solving skills and ability to develop those skills;
  Desire to learn new technologies
• Knowledge in the area of exchanges and electronic trading is an advantage;
• Knowledge of English at B1 level and higher

RESPONSIBILITIES:

• Gather and produce requirements and designs
• Write production quality and test code for the required product according to provided requirements; support the legacy code
• Accurately plan software development activities and follow established processes
• Share knowledge, listen and hear team members’ view points and provide fair evaluation of different opinions
• Communicate effectively with management and team members, be enthusiastic to contribute to the team and make a difference
• Keep commitments and deadlines

WE OFFER:

CQG provides a variety of benefits to enhance your personal and financial well-being. Employees and eligible dependents may participate in the following:

• Career and professional opportunities
• Competitive salary
• Medical insurance
• Slovenian classes
• Flexible vacation schedule and paid sick leave days
• Team buildings, meetings with colleagues from other offices, conferences, and much more

The primary objective of this position is to ensure the quality of CQG products by following and enhancing web-applications and API for Company clients.

Responsibilities:

• Write production quality and test code for the required product according to provided requirements;
• Support the legacy code
• Unit-test development
• Workflow planning and task evaluation
• Requirements design
• Actively participate in discussions regarding technical issues
• Keep commitments and deadlines

REQUIREMENTS:

• Bachelor’s degree in computer science or related discipline
• Over 3 years of hands-on experience
• Strong command of English (from B2 and higher) with the ability to communicate easily on wide range of topics, including technical discussions
• Excellent knowledge of JavaScript and TypeScript
• Knowledge of Angular is a must
• Experience in React or Vue.js
• Experience in CSS3 layout
• Understanding the processes of web-applications (REST API), web-servers and Internet network (HTTP, TCP, UDP)
• Experience in Node.js
• Experience in Git
• Excellent knowledge of OOP principles and project patterns
• High level programming
• High quality code review
• Knowledge of C#, .NET, Linux, SQL ,Angular Material, ag-grid, Docker, Kubernetes and GitLab-CI is an advantage
• Willingness to learn new industry, product or technical knowledge

WE OFFER:
CQG provides a variety of benefits to enhance your personal and financial well-being. Employees and eligible dependents may participate in the following:

• Career and professional opportunities
• Competitive salary
• Medical insurance
• Slovenian classes
• Flexible vacation schedule and paid sick leave days
• Team buildings, meetings with colleagues from other offices, conferences, and much more

We seek a detail-oriented and motivated Data Analystto join our dynamic team ✨ In this

role, you will work with data, uncover insights, and support business decisions with

meaningful analysis.
 

Requirements: 

• 1+ year of commercial experience as a Data Analyst;

• Experience building dashboards with visualization tools (Looker Studio and/or Power BI);

• Knowledge of SQL, including writing efficient and optimized queries to extract, manipulate,

and analyze data from relational databases;

• Attention to detail and data accuracy, ensuring high-quality analysis and reporting;

• Ability to work with cross-functional teams, understanding business needs and translating

them into data-driven solutions;

• Confident written and spoken English (B2 level or above).
 

Would be a plus: 

• Proficiency in Google Sheets, including advanced formulas;

• Basic experience with Amplitude or similar analytics tools;

• Basic programming skills;

• Proficiency in LLMs usage in daily tasks;

• Experience building data ETL/ELT pipelines using n8n, Make, or Zapier to integrate and

automate workflows across multiple data sources;

• Knowledge of Machine Learning (ML) concepts;

• Bachelor’s or Master’s degree in a technical field.
 

We offer: 

• Remote workplace or a comfortable office in the center of Kyiv;

• 18 working days of paid leave annually;

• Unlimited sick days;

• Salary review twice a year;

• Compensation for our English-speaking club — 100%;

• Compensation for coworking spaces — 100%;
• Compensation for gym memberships and professional courses — 80% (after the trial

period);

• Compensation for any English courses — 50% (after the trial period);

• Compensation for sessions with a psychologist — 50% (after the trial period);

• Medical insurance (after the trial period).
 

Interview Stages:

Screening Interview ➡️ Technical Interview ➡️ Job Offer
 

If you’re ready to take ownership of HR in a growing tech company and make a real impact — we’d love to hear from you! 

We are seeking an experienced and highly skilled Middle Strong/ Senior React Native Developer to join our dynamic team ✨

Requirements:
• 4+ years of experience with React Native;
• Experience with JS ES6+, HTML and CSS;
• Experience with Git, CI/CD, and related tools;
• Experience in developing mobile applications for the App Store or Google Play Store;
• Understanding of Redux and its basic principles;
• Understanding of the life cycle of an application and library components;
• Knowledge of basic software development patterns and key principles of software development;
• Strong problem-solving and decision-making skills;
• Excellent time management skills and ability to adapt to a fast-paced work environment.

Would be a plus:
• Understanding of the back-end architecture;
• Ability to plan a project’s architecture and development stages.

We offer:
• Remote workplace or a comfortable office in the center of Kyiv;
• 18 working days of paid leave annually;
• Unlimited sick days;
• Salary review twice a year;
• Compensation for our English-speaking club — 100%;
• Compensation for coworking spaces — 100%;
• Compensation for gym memberships and professional courses — 80% (after the trial period);
• Compensation for any English courses — 50% (after the trial period);
• Compensation for sessions with a psychologist — 50% (after the trial period);
• Medical insurance (after the trial period).
 

Interview Stages:

Screening Interview ➡️ Technical Interview ➡️ Job Offer

We are looking for Google Cloud Platform DevOps engineer with interest in security and automation field. We need to protect hundreds GKE cluster nodes with different security tools, automate their deployment, compliance checks for the infrastructure and log analysis.

Your primary tasks will be:

- tuning opensource security tools for K8/GKE

- analyzing security events and taking appropriate measures

- development of Terraform configurations/modules which manage security components of Google Cloud Platform

- development of Helm charts

- reviewing user access requests

- maintaining the network security rules

- maintaining the integration between GCP and other identity providers (Federated identity)

- development of shell scripts to automate routine tasks

 - we have also islands of Azure infrastructure so security of its services will be under your control as well

We expect from you:

* motivation to study security specifications, standards and open source code

* strong team player

* ability to take ownership of features you ship

* interest in the feature/product vision

* being self-learner, strong can-do attitude and great interpersonal skills.

* being comfortable with writing documentation (a lot of documentation)

A big plus is:

- Google Cloud certification

- Kubernetes certification

- Terraform certification

- BigQuery SQL perfect knowledge

- SSO, Oauth2, OIDC, SAML experience

We are looking for an endpoint/workstation support engineer to support multiple mixed MacOS/Windows/Lin remote working environments. You should maintain a high level of user satisfaction, as well as properly document your work.

Your primary tasks will include:

* Enduser remote support for agents installation

* AV alerts investigation

* Ensuring security compliance policies are in place (e.g. full disk encryption, firewall)

* Implementing updates on agent installation packages whenever new version arrives

* Testing of Windows/Win/Lin endpoint agent updates

The candidate should have a proof records of successful projects in the following areas:

* support of AV/EDR/VPN and other security agents on multiple platforms

* Intune MDM

* Apple Business Manager

* Windows, MacOS and Linux endpoint support

* Basic Unix shell and Powershell scripting

* MS Graph API and other REST API basic experience

* Windows and MacOS troubleshooting with the aid of Sysinternals tools and different set of MacOS tools (netstat, lsof, vmstat, top, dtruss, etc.)

* Fluent English

* Teamwork and problem solving mind

* Compliance framework basic awareness (ISO27001/PCI-DSS/HIPAA etc.)

* ITIL and IT service basic awareness and ability to write end-user documentation/procedures/instructions

A big plus if have all or any of the following:

* Microsoft Intune certification or other Microsoft Security/Endpoint certificationi

* Any AV vendor certification

* Any security related certification (e.g. ISO27001LA, CISSP, CISA)

We are looking for an SMM Specialist who can build and manage a comprehensive content and marketing strategy for corporate social media channels and executives’ personal brands.

The main goal is to systematically increase brand awareness, strengthen trust in the company’s expertise, and generate high-quality inbound leads through social media.

Areas of Responsibility

Corporate Channels:

• LinkedIn (Italian market)
• LinkedIn (English-speaking market)
• Instagram (Italian market)

Executives’ Personal Brands:

• LinkedIn (2 profiles)
• Instagram (2 profiles)
• Facebook (1 profile)

All channels must function as a unified system with aligned positioning, tone of voice, and business objectives.

Responsibilities

• Develop a unified SMM/content strategy across all directions (corporate + personal brands) with clear KPIs.
• Plan content: content pillars, series, key messages, CTAs, and editorial calendar.
• Create and adapt content for LinkedIn / Instagram / Facebook: post copy, structured formats, Reels/Shorts scripts, storytelling.
• Transform executives’ expert insights into strong content: interviews → drafts → final posts / video scripts.
• Coordinate production: prepare briefs for designers/editors (or handle basic design/editing independently), ensure quality control and publishing.
• Manage audience engagement: responses, moderation, community activities, organic growth.
• Analytics and optimization: weekly/monthly reports, growth hypotheses, A/B testing approaches, conversion improvement.

Requirements

• Proven experience in SMM for B2B or expert/corporate brands.
• Strong English copywriting skills (especially for LinkedIn): clear structure, clarity, executive tone.
• Deep understanding of LinkedIn mechanics: formats, reach, engagement, thought leadership development.
• Ability to work systematically: processes, deadlines, content planning, quality standards.
• Strong visual sense and ability to brief designers/editors effectively.

Nice to Have:

• Italian language and understanding of the Italian market.
• Experience in IT / AI / digital transformation topics.
• Portfolio featuring personal brands of executives or founders.

Expected Results

• A structured content system consistently operating across all channels.
• Growth in awareness, reach, and high-quality audience.
• Strengthened trust in expertise through corporate and personal pages.
• Increased inbound inquiries, meaningful dialogues, and business opportunities.

Forward Deployed Engineer

Location: Remote

Team: Forward Deployed Engineering

Type: Full-time

About the role

As a Forward Deployed Engineer, you sit at the intersection of engineering and go-to-market. You're the technical owner of customer outcomes — hands-on in the code, embedded in the customer relationship, and responsible for turning an edge intelligence platform into measurable performance wins for top ecommerce brands.

This is not a support role. You'll be debugging JavaScript in production, writing transform scripts, configuring caching rules, and troubleshooting complex CDN behavior across Shopify, SFCC, and custom storefronts. You'll own the full technical lifecycle from onboarding through optimization, working directly with merchant engineering teams and translating their stack into the platform.

About the product

This is a rapidly growing B2B SaaS product designed to help ecommerce brands drive conversion and performance. The platform uses smart caching and a globally distributed edge network to reduce latency, improve Core Web Vitals, and deliver measurable revenue uplift.

The Edge Delivery Engine accelerates ecommerce storefronts by serving fully cached pages from 310+ edge locations — each within 50ms of most of the world's population. Rather than replacing a merchant's existing stack, it works alongside it: intercepting requests at the edge, serving pre-cached HTML at sub-200ms TTFB, and applying intelligent transform scripts to handle personalization, A/B tests, and session context without breaking existing functionality.

As an FDE, you'll configure caching rules, write and debug transform scripts, diagnose TTFB regressions, and optimize cache hit rates to drive measurable performance improvements.

What you'll do

• Write, review, and debug transform scripts that modify storefront responses at the edge
• Monitor customer trials and react quickly to issues or anomalies
• Use browser DevTools and observability tools to diagnose caching issues, TTFB regressions, and personalization conflicts
• Own the technical relationship with a portfolio of merchant accounts
• Build internal tooling, documentation, and playbooks to scale operations
• Provide product feedback based on real-world use cases

What we're looking for

• 2–5 years of experience in a technical customer-facing or engineering role (solutions engineering, forward deployed engineering, full stack, etc.)
• Strong JavaScript skills (reading, writing, debugging in browser context)
• Solid understanding of web fundamentals: HTTP, caching, CDNs, DNS, browser rendering
• Experience with Shopify storefronts (Liquid, Hydrogen, headless) is a plus
• Familiarity with enterprise ecommerce platforms is a bonus
• Ability to work in production environments and troubleshoot under pressure
• Strong communication skills

Nice to have

• Experience with edge platforms (e.g., Cloudflare Workers)
• Familiarity with A/B testing and experimentation tools
• Experience with performance optimization (Core Web Vitals, LCP, TTFB)
• Experience collaborating in Git-based environments

Every year, millions of digital lives vanish. Social media platforms freeze accounts or delete data after a period of inactivity, because of death. Families lose thousands of photos, years of thoughts, and the voice of those they loved-simply because no tool exists to rescue them.

In Ukraine, this is a crisis of national memory. For families of fallen heroes and millions of displaced people, a digital memorial isn't a luxury; it’s the only way to stay close. We are building the "Digital Vault" that turns fragile social media archives into a permanent family legacy.

The Technical Challenge (What you will build)

We have the concept, the design, and the waitlist. We need you to build the Digital Archeology Engine.

1. The Parser (The "Moat"): Build a system to ingest massive, messy ZIP archives from Meta/Google, extract metadata, and auto-reconstruct a chronological life story.
2. AI Narrative: Use LLMs to transform raw data into a human-readable biography.

3. The Phygital Bridge: Create a web-first ecosystem where scanning a QR code at a memorial stone or on a photo frame instantly opens a rich, lightning-fast media sanctuary-no app download required.

    

The Tech Stack (Flexible, but leaning toward)

• Web: Next.js (SSR is critical for SEO and instant loading).
• Backend: Node.js / Python (for AI pipelines) / PostgreSQL.
• Mobile: PWA or React Native (shared logic).

• Infrastructure: AWS S3 (secure, long-term vaulting).

   

Who you are

• You ship. You’ve launched real products to real users. You care more about "working" than "perfect."
• You own the stack. At this stage, there is no "that’s not my department." You are the department.
• You understand "The Why." If you’ve ever looked at a photo of a lost loved one and wished you could hear their story again, you are the right person.

• You are an Architect. You aren't building for the next quarter; you are building a vault meant to last for decades.

   

What we are NOT looking for

• Part-time enthusiasts or "consultants."
• Architects who want to spend 6 months drawing diagrams before shipping code.

• Anyone who needs a 50-page spec to start. We move fast and iterate.

   

The Deal

• Real Co-founder status: You have a seat at the table for strategy, fundraising, and product vision. Your name is on the company.

• Sovereign Equity: We are honest about the sacrifice of deferred salary, so we are ready to give part of ownership.

   

How to Apply

Email with the subject: "Tech Co-founder - E-Memory"

Tell us:

1. Why this mission matters to you personally.
2. A link to something you’ve shipped.
3. The hardest technical challenge you see in building a "permanent" archive.

Meet Elbax! We make cool mobile apps, and people have downloaded our stuff over 50 million times. Our favorites to make? Photo/video editors apps.

Why do we think our apps rock? Simple: We've got some of the best people making them. We want every person on our team to grow, feel important, and be proud of what they do.

The Job:

We are looking for a Manual QA Engineer superstar. Sound like your jam? Here’s the scoop:

- Documentation testing;

- Testing of product functionality;

- Recording bugs in the bug tracker;

- Writing cases and other test documentation;

- Communication with people inside and outside the team.

We expect you to:

- Experience as a QA Engineer for 2 years or more;

- Experience in mobile testing;

- Basic knowledge of testing theory: test design, writing test cases and checklists, creating bug reports,

understanding of the principles of client-server applications;

- Practical experience in testing mobile applications on Android and iOS: using emulators/simulators, intercepting traffic (Charles/Proxyman, etc.), understanding the peculiarities of testing for different OS, taking logs from real devices;

- Practical experience in testing web applications: use Chrome DevTools, testing sites in different browsers;

- Backend testing: sending and reading API requests (Postman, etc.), working with database (CRUD), knowledge of basic bash/zsh commands;

- English - from Intermediate (preferably).

Moon Active is one of the world's top mobile game companies, our teams leverage cutting-edge technologies to craft fun and interactive games enjoyed by millions worldwide. We produce exciting and engaging entertainment for players across the globe and pride ourselves on developing top-quality casual games that invite and allow players to connect with one another.

As a BackEnd Developer, you will be working in a scrum team implementing new features and improving existing code for our most popular game. We are looking for a Strong developer to join an engineering team that is responsible for building complex, high-scale, and real-time systems.

We work with Node.js/Redis/Neo4j/K8s/Microservices, 24/7 serving 100k req/sec, 200k+ req/sec at peaks, Redis used as the main storage, handling terabytes of data and 200M ops/min.
 

Responsibilities:

• Delivering new game features every few weeks;
• Building distributed systems and microservices;
• Mainly developing real-time mobile game server with Node.js and Redis;
• Working with the Kyiv-based cross-functional team that also includes Unity developers and QAs.

Requirements:

• Backend development experience (any OOP language, ex. Node.js, Java, C#, etc.);
• Familiarity with Node.js - advantage;
• Willingness to operate within an AI-first approach for development productivity and feature integration;
• Experience with distributed systems and microservices architecture;
• Experience with NoSQL databases (ex. Redis);
• Experience with Backend development of real-time web services;
• Experience in a high scale system will be a plus;
• Experience working with Scrum teams will be a plus;
• Good spoken and written English is a MUST.

Benefits:

Why join Moon Active? 

• Be part of a leading global mobile gaming company with a unique product enjoyed by millions;
• Thrive in an exceptional, innovative, and dynamic environment;
• Enjoy full transparency and open communication with talented colleagues across teams;
• Take advantage of tremendous opportunities for professional growth and career advancement within a rapidly expanding company;
• Influence and help build personalized product experiences that impact millions of users worldwide.

We offer:

• Generous compensation; paid vacation and sick leave;
• Extensive medical and life insurance coverage for you and your family;
• CrossFit & running classes at the office and MultiSport card;  
• Comfortable and modern office located on Królewska 16 street in Warsaw;
• Free daily breakfasts and lunches, and a fully stocked kitchen with snacks and fruits;
• Latest tech equipment, including macOS devices;
• Training & Development/Tuition reimbursement;
• Friend Referral Program with generous bonuses;
• Fun and collaborative workplace culture with regular Friday Happy Hours and team gatherings;
• Relocation bonus for candidates moving to Warsaw;
• Bicycle and Car parking.

We Play to Win! We Play it Smart! We Play as a Team!

We are committed to investing in our employees and fostering a workplace that champions innovation, creativity, and collaboration. At Moon Active, we empower our team members to unleash their potential and achieve remarkable results every day. We encourage bold decision-making and believe that every individual has a significant impact on our success. Join us and level up your career in a supportive and high-achieving environment!

Moon Active is a company driven by the mission to become a global leader in mobile gaming. Founded in 2011, our passion for creativity, cutting-edge technology, and delivering exceptional player experiences has resulted in games enjoyed by millions worldwide.

We are looking for you, an aspiring 3D Motion Designer, to join our industry-leading marketing team.You will be responsible for creating eye-catching 2D and 3D animations across all digital and social platforms.

As part of a great team, you will receive everything you can dream of: from super friendly and creative co-workers and a strong focus on your development to projects that will inspire the whole gaming industry.
 

Responsibilities:

• Create and animate 2D and 3D videos with a focus on After Effects and Cinema 4D
• Conceptualize, present and execute your ideas from start to end: Lead your own creation from sketch to final high-quality product
• Collaborate with designers, editors and motion artists in creating 3D content: from Full CG videos and motion graphics to VFX in live-action videos
• Explore and implement current trends and tools in 3D design, animation and production pipeline
• Attend dailies and participate in creative brainstorming
• Present your own creative ideas in a dynamic environment and find solutions within tight schedules
   

Requirements: 

• Experience in After Effects and Cinema 4D (5+ years)
• Wide 3D skillset: modeling, lighting, rigging, animation, shading, and rendering (Redshift)
• Experience in 2D animation and motion graphics in Adobe After Effects
   

Advantages:

• Experience integrating 3D in After Effects
• Experience with Cinema 4D's Plug-ins like X-Particles and realflow
• Experience using popular game engines such as Unity or Unreal Engine
• Experience in using various generative AI tools
   

*** PLEASE ATTACH A LINK TO AN ONLINE PORTFOLIO/SHOWREEL
 

Benefits:

Why join Moon Active? 

• Be part of a leading global mobile gaming company with a unique product enjoyed by millions
• Thrive in an exceptional, innovative, and dynamic environment
• Enjoy full transparency and open communication with talented colleagues across teams
• Take advantage of tremendous opportunities for professional growth and career advancement within a rapidly expanding company
• Influence and help build personalized product experiences that impact millions of users worldwide
   

We offer:

• Generous compensation; paid vacation and sick leave
• Comprehensive medical and life insurance for you and your family members
• CrossFit & running classes at the office and MultiSport card
• Comfortable office located on Królewska 16 street, Warsaw
• Free daily breakfasts and lunches, as well as a fully stocked kitchen with snacks and fruits
• The latest tech equipment, including macOS devices
• Training & Development/Tuition reimbursement
• Friend Referral Program with generous bonuses
• Friday Happy Hours and team gatherings to foster a fun and collaborative workplace culture
• Relocation bonus for non-local candidates
• Bicycle and Car parking

About the Company

We are building AI systems that combine multilayered, scalable knowledge graphs with advanced reasoning agents to analyze and understand highly complex knowledge domains with scholarly precision.

The Role

We are seeking a Senior Backend Engineer with 7+ years of experience to design and scale the backend infrastructure powering our AI platform.

Key Responsibilities

• Architect and implement scalable backend services and multi-tenant SaaS systems
• Design and operate high-throughput data pipelines (batch and streaming)
• Build APIs and services integrating LLM inference, retrieval systems, and knowledge graphs
• Productionize research-grade AI systems into reliable distributed systems

Required Qualifications

• 7+ years of backend engineering experience
• Strong experience with data pipelines and SaaS architectures
• Strong proficiency in Python
• Deep understanding of distributed systems and cloud-native environments
• Fluent English

Preferred Qualifications

• Go and/or Scala experience
• Hands-on experience with LLM systems (RAG, model serving, evaluation)
• Experience with knowledge graphs, vector databases, or hybrid retrieval architectures
• MS in Computer Science

What We Offer

Technical Innovation: Lead novel neuro-symbolic architectures with cutting-edge research access

Work Environment: Flexible arrangements, international travel opportunities