Jobs at Djinni

We are a Ukrainian Defense Tech company building next-generation autonomous ground systems. Our team combines expertise in Robotics, AI, embedded systems, and autonomous navigation, including engineers with experience from global technology and DeepTech companies.

We are looking for an experienced Robotics Software Engineer to join the development of a new autonomous platform currently progressing through intensive R&D and real-world testing.

What you'll do

• Develop software for autonomous robotic systems operating in challenging environments
• Design and improve perception, localization, mapping, and navigation capabilities
• Build reliable real-time software running on edge computing platforms
• Integrate sensors, cameras, and hardware components into autonomous systems
• Work across the full development cycle, from simulation and prototyping to field deployment
• Analyze system performance and improve reliability during real-world testing
• Collaborate on system architecture and technical decision-making
   

What we're looking for

• Strong Python and/or C++ development skills
• Experience building software for robotics, autonomous systems, drones, vehicles, or embedded platforms
• Familiarity with ROS/ROS2 or similar robotics frameworks
• Experience with sensors, cameras, localization, mapping, or navigation systems
• Understanding of real-time software and deployment on edge hardware
• Comfortable debugging complex systems that interact with physical hardware
• Linux development experience

Valuable experience

• Computer vision and image processing
• SLAM, localization, sensor fusion, or state estimation
• Autonomous navigation and path planning
• Jetson, embedded GPU platforms, or edge AI deployment
• UAV, UGV, mobile robotics, or autonomous vehicle projects
• Simulation environments such as Gazebo, AirSim, Isaac Sim, or Webots
• Machine learning, object detection, or perception systems
   

What we offer

• Work on real-world autonomous systems with immediate impact
• Significant ownership and influence on technical decisions
• Fast-moving R&D environment with minimal bureaucracy
• Collaboration with a highly experienced engineering team
• Remote, hybrid, or office-based work options
• Office in central Kyiv

In Competera, we are building a place where optimal pricing decisions can be made easily. We believe that AI technologies will soon drive all challenging decisions and are capable of helping humans be better.
We are now looking for an Integration Engineer to make the Integration process at Competera clear, consistent, and repeatable.

You could be a perfect match for the position if
You want to:

• Organize technical integration between Competera Pricing Platform and customers;
• Communicate with customers’ IT and commercial teams in their business hours;
• Supervise integration partners (contractors) and assist them with ETL creation and support;
• Maintain data validation (analyze, validate, troubleshoot data issues) and suggest options for process improvement and automation.

You have:

• SQL (mid +);
• Upper-intermediate level of English;
• Transformation from business request to technical requirements;
• Presentation and business communications skills Critical thinking, problem-solving, Quick learner;

• Ability to work under minimal guidance;

  Requirements (extra):

• Basic Core Python, Airflow;
• Experience with retail, enterprise customers.

You’re gonna love it, and here’s why:

• Rich innovative software stack, freedom to choose the best suitable technologies;
• Remote-first ideology: freedom to operate from the home office or any suitable coworking;
• Flexible working hours (we start from 8 to 11 am) and no time tracking systems on;
• Regular performance and compensation reviews;
• Recurrent 1-1s and measurable OKRs;
• In-depth onboarding with a clear success track;
• Competera covers 70% of your training/course fee;
• 20 vacation days, 15 days off, and up to one week of paid Christmas holidays;
• 20 business days of sick leave;
• Partial medical insurance coverage.

Drive innovations with us. Be a Competerian.

About Archysoft

Archysoft is a software development company with over 10 years of experience delivering solutions to clients across the United States and Western Europe.

We are looking for a Senior Android Developer to maintain and further develop a mature native application for managing Bluetooth-enabled devices. The product also includes encrypted chats, audio and video calls, media integrations, and a Wear OS companion application.

The role requires an independent engineer comfortable working with a large production codebase, complex Bluetooth functionality, and a reactive technology stack.

In this role, you will:

• Maintain and further develop the native Android application;
• Investigate production issues using Firebase Crashlytics;
• Implement new features and support new Android versions and devices;
• Work with a custom Bluetooth Low Energy protocol stack across several generations of devices;
• Improve BLE connection stability, background operation, and foreground services;
• Support DFU/OTA firmware updates;
• Maintain WebRTC calls, real-time chats, encrypted data storage, and the Wear OS application;
• Support Media3/ExoPlayer and Spotify integrations;
• Manage releases through Google Play, Firebase App Distribution, and alternative channels;
• Update dependencies, improve legacy code, reduce technical debt, and introduce unit tests;

• Participate in code reviews and collaborate with development and QA teams.

   

Required experience and skills

• 5+ years of commercial Android development experience;
• Expert knowledge of Kotlin and the ability to read and modify Java code;
• Strong commercial experience with RxJava 3, RxAndroid, and RxKotlin;
• Strong knowledge of the classic Android View system: XML, ViewBinding, and custom views;
• Practical BLE experience, including GATT, services, characteristics, background restrictions, and connection stability;
• Experience with Hilt or Dagger 2;
• Experience with Room and Android Navigation Component;
• Experience maintaining large multi-module Gradle projects;
• Understanding of build variants, product flavors, and complex build configurations;
• Experience with the full Google Play release lifecycle;
• Experience maintaining and debugging production applications;
• Ability to work independently;

• English level B2 or higher.

   

As a plus

• RxAndroidBle and OTA/DFU experience;
• WebRTC and audio-routing experience;
• Wear OS and Jetpack Compose experience;
• Experience with end-to-end encryption, Olm/Matrix, or SQLCipher;
• Media3, ExoPlayer, or MediaSession experience;
• GitLab CI and fastlane;

• Experience distributing applications outside Google Play or supporting the Chinese market.

   

Technology stack

Kotlin, Java, RxJava 3, XML, ViewBinding, MVVM, LiveData, Hilt/Dagger 2, Retrofit, OkHttp, Room, SQLCipher, RxAndroidBle, WebRTC, Media3, ExoPlayer, Firebase, Gradle, GitLab CI, fastlane, Wear OS.

What we offer

• Fully remote, full-time cooperation;
• A long-term product with an established user base;
• Work with technically complex mobile functionality;
• Professional development plan and regular feedback;
• Compensation for approved courses and certifications;
• 20 paid working days per year for vacation and sick leave;

• Salary reviews based on performance and professional growth.

   

Interview process

• Introductory interview with a recruiter;
• Technical interview;
• Final interview with the client or project representative.

We are looking for a talented Lead QA Engineer (Mobile) with a passion for delivering the highest quality mobile app development to play a critical role in building a useful EdTech product.

As part of our team, you will be responsible for ensuring that our product meets the highest quality standards through comprehensive testing strategies.

Ready to be part of a modern, fast-growing, #1 product in its niche while gaining extensive professional growth? Apply now!

Who are we?

memoryOS is world’s #1 app for improving memory and focus, helping people overcome forgetting curve and retain needed knowledge. Proven learning and memory techniques are merged with duolingo-like gamified e-learning with patented virtual mind palace tech. Co-founded by 2X World Memory Champion — Jonas von Essen.

We’re a remote team of 50+ diverse, like-minded professionals, united in solving the problem of the forgetting curve.

We are proud to be the Most Funded App on Kickstarter. The memoryOS was featured on TechCrunch and recognized by Google Brands Accelerator as a product that is “light years ahead of any other company in memory space”.
 

What you’ll be working on

• Conduct independent and team-based project testing.
• Create detailed and actionable bug reports for swift resolution.
• Perform regression testing, estimate task durations, and maintain thorough documentation.
• Lead and improve QA processes, tools, and tests to make releases faster and more reliable.
• Mentor QA team members, fostering skill development and best practices.
• Assess tasks for testing, analyze requirements, estimate tickets, and prioritize testing efforts.
• Stay informed about industry trends to maintain product innovation and competitiveness.
• Collaborate closely with Product, Art, Tech, and Customer Support teams to continuously improve product quality and user experience.

About you

• 5+ years of experience in Mobile QA Testing
• 2+ years of experience in Leading Role
• Proven experience in leading QA processes and mentoring team members to foster skill development and best practices.
• Proficiency with QA documentation (test cases, bug reports, etc.)
• Proficiency with Jira and experience in black box testing.
• Mobile automation QA experience
• Excellent communication skills and keen attention to detail.
• Leadership and ownership mindset.
• Proactive, reliable, and dedicated to self-improvement and ethical standards.
• Proficient in English (B1 level or higher).

You will also get:

• Comprehensive product testing and a diverse array of tasks.
• Developing solutions that have a direct impact on business.
• Transparent management, clear communication, and regular feedback.
• The opportunities to be involved in an interesting and useful product for millions of people.
• The modern team of like-minded and diverse professionals.
• Enjoy a vacation and paid sick leave days to relax every year.
• Fully remote: you are free to choose your productive work time and place.
• The opportunity to receive company shares upon reaching predefined milestones.

Getting the job

Enjoy building a top-level product with us while gaining extensive professional experience in a company with an important mission.

Step by step for this position:

1. Screening call (up to 1 hour): Position discussion, check basic competencies, and culture fit.
2. Technical interview (2 hours): Detailed сase approach to identify experience, technical skills, and core competencies.
3. Referral: Recommendations from the previous workplace.
4. Interview with CEO and CTO (30 minutes): Summarize experience and assess alignment with the company’s strategic goals. It’s the best time for any final questions.
5. Offer call (30 minutes): Discussion of a Job Offer Proposal.

Let’s make the world remember!

B2B Sales Manager (US Market) — Remote

Do you enjoy phone negotiations, aren’t afraid of cold outreach, and want your income tied to results rather than a ceiling? Then keep reading.

Binotel is a SaaS company with 15 years of experience in business communications. We’re expanding into the US market and looking for a Sales Manager to own deals from first contact to signed contract.

What to know upfront

• You’ll sell to US-based businesses — all calls and negotiations in English with native speakers (C1+ required).
• Schedule: 3:00 PM–12:00 AM Kyiv time (aligned with the US business day).
• Fully remote.

What you’ll do

• Own the full sales cycle: discovery call → demo → objection handling → close.
• Conduct discovery calls and online meetings with US-based businesses.
• Match prospects from our product suite (Cloud PBX, Call Tracking, CRM, Online Chat, and business automation tools) to the problems they actually need solved.
• Build long-term relationships with decision-makers.
• Keep deals updated in CRM and maintain an accurate forecast.
• Hit monthly targets and KPIs.

What we’re looking for

• 1+ year in B2B sales, ideally SaaS or telecom.
• Experience with outbound / cold outreach.
• English C1+, confident on calls and in negotiation.
• Numbers-driven mindset, not process-driven.

What we offer

• 💻 Fully remote work
• 🕒 Working hours: 3:00 PM–12:00 AM (Kyiv time)
• 💰 Competitive fixed salary + uncapped commission
• 📈 Clear career growth to Senior Sales Manager and Team Lead
• 🎓 Structured onboarding and support from an experienced team
• 🚀 Established SaaS product with international expansion

About Archysoft

Archysoft is a software development company with over 10 years of experience delivering solutions to clients across the United States and Western Europe.

We are looking for a Senior iOS Developer to maintain and further develop a mature native iOS application for managing Bluetooth-enabled devices. The product also includes encrypted chats, audio and video calls, media functionality, and a companion Apple Watch application.

The project has been actively developed since 2018 and includes a large Swift codebase, multiple application targets, regional builds, and integrations with physical devices.

In this role, you will:

• Maintain and further develop the native iOS application;
• Investigate production issues and crashes;
• Implement new features and support new iOS versions and devices;
• Work with Bluetooth Low Energy, custom device protocols, background connections, and OTA firmware updates;
• Maintain WebRTC calls, CallKit integration, encrypted chats, and secure local storage;
• Support the Apple Watch application and background audio functionality;
• Manage TestFlight and App Store releases;
• Maintain multiple application targets and regional configurations;
• Update dependencies and gradually improve legacy code;

• Participate in code reviews and collaborate with development and QA teams.

   

Required experience and skills

• 5+ years of commercial iOS development experience;
• Expert knowledge of Swift;
• Strong commercial experience with UIKit, Storyboards, XIB, Auto Layout, and custom views;
• Strong experience with RxSwift, RxCocoa, and reactive programming;
• Practical experience with CoreBluetooth and BLE, including GATT, background modes, and connection stability;
• Ability to read and modify Objective-C code;
• Experience with local databases, Keychain, and sensitive or encrypted data;
• Strong knowledge of Swift Package Manager;
• Experience maintaining large multi-target Xcode projects;
• Experience with fastlane, TestFlight, and App Store releases;
• Strong production debugging skills;
• Ability to work independently;

• English level B2 or higher.

   

As a plus

• Experience with RxBluetoothKit and OTA/DFU firmware updates;
• WebRTC and CallKit experience;
• Apple Watch or watchOS development experience;
• Experience with end-to-end encryption technologies such as Olm or Matrix;
• Experience with Realm and encrypted local storage;
• GitLab CI, fastlane Match, and self-hosted macOS runners;

• Experience supporting applications for the Chinese market.

   

Technology stack

Swift, Objective-C, UIKit, MVVM, RxSwift, RxCocoa, Moya, Alamofire, CoreBluetooth, RxBluetoothKit, Realm, WebRTC, CallKit, Firebase, SPM, GitLab CI, fastlane, watchOS.

What we offer

• Fully remote, full-time cooperation;
• A long-term product with an established user base;
• Work with complex native mobile functionality and physical devices;
• Professional development plan and regular feedback;
• Compensation for approved courses and certifications;
• 20 paid working days per year for vacation and sick leave;

• Salary reviews based on performance and professional growth.

   

Interview process

• Introductory interview with a recruiter;
• Technical interview;
• Final interview with the client or project representative.

Core Responsibilities
* Launching and managing advertising campaigns across multiple traffic sources (Meta/Facebook Ads, Google UAC, Unity Ads, Moloco, Taboola and other native ad networks).
* Daily campaign optimization to achieve target KPIs (ROI, CPA, EPC, uEPC, CR, LTV).
* Performance analysis and decision-making based on data.
* Creating testing plans and running A/B tests for creatives, audiences, placements and bidding strategies.
* Finding profitable combinations of GEO / Offer / Creative / Audience / Traffic Source.
* Scaling profitable campaigns while maintaining target profitability.
* Monitoring traffic quality and compliance with platform and partner requirements.
* Preparing daily/weekly reports.
* Following internal processes, security policies and confidentiality requirements.
⸻
Requirements
* 2+ years of experience as a Media Buyer / User Acquisition Manager.
* Experience with one or more traffic sources:
   * Meta (Facebook) Ads
   * Google UAC
   * Unity Ads
   * Moloco
   * Taboola
   * Other Native Ad Networks
* Strong understanding of performance marketing metrics:
   * ROI
   * CPA
   * EPC
   * uEPC
   * CTR
   * CR
   * CPC
   * CPI
   * LTV
* Experience launching and scaling mobile applications and link.
* Strong analytical skills and data-driven decision making.
* Experience with tracking platforms (Keitaro).
* Experience with A/B testing.
* Ability to evaluate and improve creative performance.
* Self-driven, responsible and result-oriented.
⸻
Nice to Have
* Experience in Dating vertical.
* Experience with Android/iOS apps.
* Experience with affiliate marketing.
* Experience working with white/black lists.
* Experience with automated bidding strategies.

Where high-stakes experience meets human-first communication.

VIP — it’s not “support.” It’s working with a limited pool of top-tier players where attention, accuracy, and genuine human connection matter.
If you enjoy meaningful conversations, reading signals, and treating every detail with care — this role is for you.

🎯 What You’ll Be Doing

1. Managing VIP Players

• Daily communication via chat & email (EN)
• Warm, personal messages and soft-touch engagement
• Celebrations, check-ins, answering questions, and guiding players through their journey

2. Working With Bonuses

• Issuing SC/FS within clear, structured limits
• Keeping accurate records of every decision
• Following the no–double-subsidizing policy

3. Player Monitoring & Activity Tracking

• Watching for purchase patterns, drops in activity, and unusual behavior
• Handling players across Tier 4 → Tier 1
• Updating player profiles, adding notes, preferences, and risk insights

4. Anti-Abuse & Anti-Fraud Awareness

• Spotting red flags early
• Avoiding bonus allocation to questionable accounts
• Escalating suspicious cases to Head of VIP / Compliance

5. Cross-Team Collaboration

• Passing cases to Support, Finance, Compliance when needed
• Following internal VIP flows smoothly and consistently
   

🌟 What We Expect From You

• Excellent, calm, and clear communication with players
• English at Upper-Intermediate level or higher — confident written communication in EN
• Ownership of your decisions and actions
• Strong attention to detail — especially in text
• Desire to grow beyond simple ticket handling
• Openness to learning the VIP style: tone, communication, tier logic
• Confidence and stability when working with high-value players
   

💚 What We Offer

• Higher financial motivation compared to support roles
• Competitive salary with potential to grow as you take on more responsibility
• A role where your decisions directly influence VIP retention and revenue
• Structured schedule:
  • Start: 5/2, 8-hour shifts + 1-hour break
  • Later: possible transition to 2/2, 12-hour shifts

We are looking for a detail-oriented and proactive QA Engineer to join our team. This is a hybrid quality engineering role with a strong focus on both manual and automated testing.

Required Qualifications

• 4+ years of hands-on experience in software quality assurance;
• Proven experience in test automation and a strong interest in expanding automation coverage;
• Understanding of automation frameworks, test design principles, and CI/CD practices;
• Proficiency in API testing and interpreting API documentation, including endpoints, authentication methods, request/response structures, and JSON payloads;
• Experience using Postman or similar API testing tools;
• Hands-on experience with Azure DevOps, including work item management, project hierarchies, iterations, and workflows;
• Experience with Azure DevOps Test Plans, Test Cases, and bug tracking;
• Solid SQL knowledge and practical experience working with databases;
• Upper-Intermediate (B2+) English proficiency, both written and spoken;
• Experience with AI-powered tools for software testing, quality assurance, or productivity enhancement;
• Strong communication skills and the ability to work effectively both independently and as part of a team.

Responsibilities

• Perform exploratory, functional, regression, and automation testing activities;
• Design, develop, execute, and maintain manual and automated test cases;
• Develop and enhance automated test suites to improve test coverage and efficiency;
• Create and maintain test documentation, including test plans, test cases, and test reports;
• Execute comprehensive API testing and validate API contracts, including endpoints, authentication methods, request/response structures, and JSON payloads;
• Utilize Postman or similar tools for API testing;
• Identify, document, prioritize, and track defects with clear and detailed reproduction steps;
• Analyze test results and provide actionable feedback to stakeholders;
• Collaborate closely with developers, business analysts, and other team members throughout the software development lifecycle;
• Contribute to continuous improvement initiatives related to QA processes, testing strategies, and automation frameworks;
• Utilize Azure DevOps for work item management, test planning, test execution, and defect tracking.

Location: Remote form EU, occasional business trips to Munich
Languages: English and German
Type of the project: SAP S/4HANA Transformation

Requirements

Mandatory
• 8–10+ years of experience in SAP Basis Administration.
• Deep understanding of SAP System Landscape Architecture.
• Hands-on experience in SAP S/4HANA Transformation Projects.
• Expertise in SAP HANA Database Administration.
• Experience with: SAP Installation; System Copy; Upgrades; Migration; Performance Tuning; Monitoring.
• Experience in SAP technical architecture design.
• Excellent technical documentation skills.
• Experience in client-facing roles and technical consulting.
• Strong communication skills.
• Fluent German.
• Good English.

Nice to have
 

• SAP Certifications.
• Experience in international enterprise-scale projects.
• Experience with high‑load SAP landscapes.
• Knowledge of SAP Solution Manager.
• Experience with Cloud infrastructure (Azure/AWS/GCP for SAP).
• Experience in SAP Basis automation.

Key Responsibilities

• Advising clients on the analysis, optimization, and development of their SAP Basis Landscape.
• Designing and overseeing SAP Basis architecture.
• Preparing technical documentation and establishing documentation standards.
• Providing technical support for migration projects and transitions to SAP S/4HANA.
• Architectural consulting on the evolution of the SAP System Landscape.
• Developing technical roadmaps and strategic recommendations.
• Consulting on SAP HANA Database, including: Database Architecture; Performance Optimization; Monitoring; Migration.
• Supporting and optimizing SAP system performance.
• Conducting knowledge transfer sessions for the client's internal teams.
• Coordinating technical requirements with all project stakeholders.
• Collaborating with infrastructure teams and architects.

Are you passionate about bringing ideas to life through captivating visuals and dynamic motion design? Codefinity, a leading online learning platform, is looking for a talented Graphic & Motion Designer to join our marketing team. In this role, you’ll bring campaigns to life through compelling graphics and dynamic motion design.

Requirements:

• 2+ years of experience in performance marketing design (Facebook Ads).
• Proficiency in Figma and Adobe Creative Suite (After Effects, Photoshop).
• Strong understanding of the fundamentals of composition, typography, and color theory.

• Ability to work within brand guidelines while delivering innovative and fresh ideas.

   

Key Responsibilities:

• Collaborate with the marketing team to create visually striking designs for online campaigns and social media.
• Actively participate in idea generation and team brainstorming sessions.
• Design static and motion graphics creatives.
• Ensure consistency of brand identity across all marketing materials.

• Stay current on design trends and bring fresh ideas to marketing strategies, ensuring Codefinity stands out in a competitive market.

   

What do we offer:

• A hybrid work format in Kyiv that combines office days and remote work from home in a flexible way to ensure an optimal balance.
• Work within an ambitious team on a socially impactful education product.
• 20 working days of paid vacation per year, plus public holidays.
• An office with a reliable shelter, generators, satellite internet, and other amenities.
• Access to our corporate knowledge base and professional communities.
• Compensation for English language learning, external training, and courses.
• Medical insurance and full sick leave compensation.
• Company doctor and massage in the office.
• Sports activities: running, yoga, boxing, and more.

We are looking for a designer who loves to go beyond basic references and build genuine visual concepts. If you can easily grasp a product's value, tailor ideas for various audiences, and use AI tools to boost your daily workflow — you should definitely join us!

We are looking for a Python Developer (microservices) to join the Dataforest team. If you are looking for a friendly team, a healthy working environment, and a flexible schedule ‒ you have found the right place to send your CV.

  You'll be a great fit if you have:

• 2+ years of experience with Python;
• Experience with SQL and query optimisation;
• Experience with integration of 3rd party services;
• Strong understanding of client-server model, REST API approach, authorization/authentication principles;
• Strong understanding of asynchronous/multithread/multiprocess programming;

• Upper- Intermediate level of English.

   

    Would be a plus:

• Experience with Redis and Lua scripts;
• Experience with AWS services (Lambda, Step Functions, API Gateway, SQS, Fargate);
• Experience with Django REST API;
• Experience with payment systems integrations (Stripe, Shopify, Recurly, PayPal, Braintree, etc.);

• Experience with Celery and async task management.

   

  What you'll do:

• Developing server applications (APIs). Within these applications, developers need to describe core logic and integrations with third-party services.
• Writing scripts similar to DAGs in Airflow or AWS Lambdas. These scripts should process information using Pandas or implement some simple business logic.
• Developing applications with a distributed architecture (microservices).

• Developing client applications for data retrieval. These data will later be processed by developers from the DS and DE departments.

   

  We ensure your growth with:

• Competitive salary fixed in USD
• Flexible working schedule and fully remote work format
• Paid vacation days and sick leave days 
• Personal and professional development opportunities
• Participation in building innovative projects from scratch using modern technologies
• Team-building activities and corporate events
• English classes and educational events.

Are you a Data Scientist with a love of LLMs, generative AI?

We are looking for a passionate Data Scientist to implement AI solutions aimed at achieving business goals.

This role offers the opportunity to work on cutting-edge AI adoption projects that helps to improve current business processes.

You'll be a great fit if you have:
• Strong Python Experience (1 year +);
• Experience with LLM , Diffusion models (1 year +);
• Knowledge of Prompt engineering;
• Experience with Gen AI-related technologies such as LangChain and RAG;
• Experience with Neural Networks (Optional) ;
• Experience with NLP , Predictive analytics and Machine learning;
• Experience with Pandas;
• Experience with SQL, including experience with large datasets;
• Strong experience in statistics;

What you'll do:
• Develop AI agents that utilize LLM, RAG and langchain approach;
• Implement LLM and Diffusion models to boost business productivity;
• Utilize LLM (LLM Vision) to improve object detection, text classification and extraction;
• Create forecasting, recommendation, and classification models;
• Transform business challenges to AI applications;

We ensure your growth with:

• Competitive salary fixed in USD

• Flexible working schedule and fully remote work format

• Paid vacation days and sick leave days 

• Personal and professional development opportunities

• Participation in building innovative projects from scratch using modern technologies

• Team-building activities and corporate events

• English classes and educational events.

Are you a Data Scientist with a love of LLMs, generative AI?

We are looking for a passionate Data Scientist to implement AI solutions aimed at achieving business goals.

This role offers the opportunity to work on cutting-edge AI adoption projects that helps to improve current business processes.
 

     You'll be a great fit if you have:

•  Strong Python Experience (2 year +);
• Experience with LLM , Diffusion models;
• Knowledge of Prompt engineering;
• Experience with Gen AI-related technologies such as LangChain and RAG;
• Experience with Neural Networks (Optional) ;
• Experience with NLP , Predictive analytics and Machine learning;
• Experience with Pandas;
• Experience with SQL, including experience with large datasets;

• Strong experience in statistics;

  What you'll do:

• Develop AI agents that utilize LLM, RAG and langchain approach;
• Implement LLM and Diffusion models to boost business productivity;
• Utilize LLM (LLM Vision) to improve object detection, text classification and extraction;
• Create forecasting, recommendation, and classification models;
• Transform business challenges to AI applications;

     We ensure your growth with:

• Competitive salary fixed in USD
• Flexible working schedule and fully remote work format
• Paid vacation days and sick leave days 
• Personal and professional development opportunities
• Participation in building innovative projects from scratch using modern technologies
• Team-building activities and corporate events
• English classes and educational events.

We are looking for a visionary and hands-on Senior Backend Developer / Tech Lead to drive the technical evolution of our high-performance microservices ecosystem at Dataforest. If you are passionate about building scalable, high-load systems, defining architectural patterns, and guiding a talented engineering team in a healthy, flexible working environment — we want you on board!

    Technical Requirements:

• 4+ years of commercial experience in backend development using Python;
• Proven track record of designing and scaling high-load (Highload) applications and distributed systems;
• Deep expertise in FastAPI (advanced async patterns, dependency injection, architecture optimization, Pydantic v2);
• Extensive hands-on experience with GraphQL in production (advanced schema design, federation/subgraphs, N+1 problem resolution, resolver optimization);
• Strong mastery of asynchronous programming in Python (asyncio, advanced concurrency models);
• Production experience with AWS infrastructure;
• Advanced knowledge of SQL  databases, mastering query optimization, indexing strategies, and database sharding/replication (e.g., PostgreSQL + SQLAlchemy/Tortoise);
• Deep understanding of microservices patterns (Event-Driven Architecture, CQRS, Saga pattern, API Gateways, Service Mesh).
   

     Optional skills (as a plus):

• Experience with specialized GraphQL tools like Strawberry, Ariadne, or Apollo Router/Federation;
• Advanced usage of Redis (caching strategies, pub/sub);
• Experience with message brokers and task queues (Kafka, RabbitMQ, Celery) under heavy loads.
• Experience with third party integrations (payments, iGaming platforms, CRM and similar).
   

    Key Responsibilities:

• Architecture & Leadership: Design, build, and maintain scalable backend architectures using FastAPI and GraphQL; establish best practices, code standards, and technical roadmaps;
• High-Load Optimization: Solve complex scalability challenges, optimize system performance, eliminate bottlenecks, and ensure low-latency data delivery;
• Microservices & Infrastructure: Own the integration and evolution of a highly distributed microservices mesh built on AWS;
• Mentorship & Code Quality: Lead technical discussions, conduct rigorous code reviews, and mentor Middle/Junior developers, fostering a culture of engineering excellence;

• Cross-functional Collaboration: Act as a key technical point of contact, collaborating with Data Science, Data Engineering, and product stakeholders to design robust data-retrieval and processing APIs.
   

  We offer:

• Great networking opportunities with international clients, challenging tasks;
• Building interesting projects from scratch using new technologies;
• Personal and professional development opportunities;
• Competitive salary fixed in USD;
• Paid vacation and sick leaves;
• Flexible work schedule;
• Friendly working environment with minimal hierarchy;
• Team building activities, corporate events.