Jobs at Djinni

Engagement: Contract (Immediate start)
Duration: 2–4 weeks (extension likely)

Role Overview

We are seeking an experienced WebGL / Three.js developer to modernize and enhance a legacy 3D visualization into a high-quality, investor-ready demo. The work focuses on performance, visual polish, and modern Three.js architecture.

Responsibilities

• Upgrade and refactor legacy Three.js code to modern standards
• Build and optimize 3D particle systems and scene interactions
• Implement lighting, post-processing (bloom, depth of field), and camera controls
• Optimize performance for large 4K displays

• Collaborate with product and design on a polished demo experience

   

Required Skills

• Strong experience with Three.js / WebGL
• Modern JavaScript (ES6+); TypeScript preferred
• Experience optimizing real-time 3D scenes (60fps target)

• Solid understanding of cameras, lighting, and post-processing

   

Preferred

• React + Three.js (react-three-fiber)
• Shader/GLSL experience
• Vite or modern build tools

About the Role

We are seeking a Senior Automated QA Engineer who can own quality end-to-end in a fast-moving product environment. This role is highly hands-on and ideal for someone who has built QA processes from scratch, scaled automation, and partnered closely with Product and Engineering to ship reliable software at speed.

You will lead test automation efforts using Playwright, drive API and database testing for microservices, and embed quality deeply into CI/CD pipelines across web and mobile platforms.

Key Responsibilities

• Design, implement, and maintain E2E automated test frameworks (Playwright preferred)
• Own quality strategy across web, mobile (iOS/Android), and API layers
• Perform API-first testing for microservices using Postman and SQL validation
• Integrate automated tests into CI/CD pipelines and enforce quality gates
• Execute and optimize regression, smoke, and release validation testing
• Collaborate with Product, Engineering, and Design in Agile/Scrum ceremonies
• Analyze defects, perform root cause analysis, and reduce production leakage
• Support performance and load testing (k6, JMeter) when needed
• Contribute to tooling decisions, test coverage strategy, and QA best practices
• Participate in AI-assisted testing initiatives and modern QA experimentation
  
   

Required Qualifications

• 6+ years of experience in QA Automation / Software Testing
• Strong hands-on experience with Playwright (or Selenium with migration experience)
• Proficiency in JavaScript / TypeScript (Java acceptable)
• Solid experience testing REST APIs and backend services
• Strong SQL skills (MySQL, PostgreSQL, MS SQL) for data validation
• Experience working with CI/CD pipelines (GitLab CI, Azure DevOps, Git)
• Proven ability to test React / React Native applications
• Deep understanding of SDLC, Agile, and risk-based testing
• Experience testing across web, iOS, Android, and macOS
  
   

Nice to Have

• Experience with visual testing and large-scale content validation
• Familiarity with AI-driven features and AI quality considerations
• Experience with BrowserStack, Expo, Xcode, Android Studio
• Performance testing experience with k6 or JMeter
• Previous experience building QA processes from zero
  
   

Tools & Tech Stack

• Automation: Playwright, Selenium
• API & Performance: Postman, k6, JMeter
• Test Management: TestRail, Zephyr
• Tracking & Delivery: Jira, ClickUp
• CI/CD & VCS: Git, GitLab CI/CD, Azure DevOps
• Databases: MySQL, PostgreSQL, MS SQL
• Platforms: Web, iOS, Android, macOS
• Cloud: AWS, Azure

Primary requirements:

· Higher (or incomplete higher) technical education;

· Experience in programming for Android from 2 years;

· Excellent knowledge of Kotlin, Android SDK

· Experience with:

- multithreading in Java

- Kotlin;

- Android architectural components

- Firebase;

- RXJava2;

- understanding of REST;

- understanding of OOP principles

· Knowledge of Googel approaches;

· Confident use of GIT, collaboration systems;

· Availability of applications posted on Google Play;

· Solid understanding of client-server application architecture;

· Knowledge of English at a minimum technical level, preferably spoken and written at an above-intermediate level.

Main responsibilities:

· Writing code according to technical specifications;

· Development of systems from scratch and mobile versions of company products;

· Interaction with the development team;

Working conditions:

· Bid;

· Working hours are flexible, Mon-Fri, from 9 to 18 or from 11 to 20

· Stable job in a successful IT company;

· Remote work;

Senior Python / AI Engineer

Role Overview

We are looking for a Senior Python/AI Engineer with strong experience in machine learning, data engineering, cloud-based architectures, and AI agent pipelines.

You will work directly with the system architect to design and build:

• AI-powered data pipelines,
• prediction and scoring models,
• market-resolution oracles,
• agentic processing pipelines (AWS Bedrock / LangChain / custom),
• high-performance AWS-backed microservices and event-driven workflows.

This role is suited for a self-driven engineer who can operate in a fast-moving architecture.

Key Responsibilities

AI / ML

• Develop and train ML models for market signals, behavioral patterns, user risk segmentation, anomaly detection.
• Implement embedding pipelines, vector search and semantic analysis using:
  AWS Bedrock (Titan, Claude), SageMaker, LangChain, FAISS, OpenSearch, or local pipelines.
• Build LLM-based agents using LangGraph, LangChain, AWS Bedrock Agents, or custom orchestration.
• Work with HuggingFace, PyTorch, scikit-learn, Transformers, Nomic embeddings, etc.

Python Engineering

• Design clean, modular services for data collection, processing, analytics and agentic workflows.
• Build real-time pipelines using:
  asyncio, WebSockets, FastAPI, Redis Streams, Kafka, Celery, Apache Beam (optional).
• Implement microservices interacting with internal APIs, AWS services and data layers.
• Write production-quality Python (3.10+) with Pydantic, SQLAlchemy, Poetry/pipenv, type checking (mypy), and tests (pytest).

Data Engineering

• Create ETL/ELT pipelines aggregating both on-chain and off-chain datasets using:
  AWS Glue, AWS Lambda, Step Functions, Athena, S3, DynamoDB Streams, Kinesis.
• Optimize storage and data access: PostgreSQL, DynamoDB, Redis, S3, OpenSearch.
• Implement observability and monitoring: CloudWatch Logs, Metrics, X-Ray, OpenTelemetry.

DevOps / Cloud (nice to have)

• Experience with AWS:
  • Lambda (Python runtime)
  • ECS Fargate
  • Bedrock (LLMs, embeddings, agents)
  • SageMaker (model training & deployment)
  • SQS, SNS, EventBridge
  • API Gateway
  • OpenSearch
  • Neptune (graph DB)
  • KMS, IAM best practices
• Build and monitor ML services in production using:
  SageMaker endpoints, CI/CD, Docker, Terraform, GitLab CI.

Requirements

Must-Have

• 5+ years of Python engineering experience.
• Strong background in AI/ML, especially NLP and agent-based architectures.
• Experience with LLMs, embeddings, RAG, and vector DBs (FAISS, OpenSearch, Pinecone).
• Strong understanding of async Python and distributed systems.
• Experience with data pipelines (ETL/ELT), real-time event-driven processing.
• Ability to work independently and architect solutions end-to-end.
• Familiarity with AWS cloud services (at least S3, Lambda, API Gateway, CloudWatch).

Nice-to-Have

• Experience with blockchain (EVM, Polygon, oracles).
• Experience with AWS SageMaker training pipelines.
• Understanding of smart-contract-driven workflows.
• Experience with graph analytics: Neo4j, AWS Neptune, RDF/Gremlin.
• Basic Solidity understanding.
• Experience with agent frameworks such as LangGraph.

Understanding that there is an approach, technologies, levels, process, components;

Defects: types and life cycle of defects;

Test types. Organization of tests;

Testing of complex software solutions and complex systems;

Requirements, an introduction to bug tracking systems;

QA process: initialization, goals, priorities, timing, risks.

Requirements:

Linux (3+years)

Docker containers, create docker images (3+years)

Kubernetes, — necessarily (2+years)

Production experience with at least one: GCP, AWS, AZURE, DO (3+years) Ansible, Terraform (3+years)

Nginx, Istio, Traefik

GitLabCI, CircleCI

MySQL, PostgreSQL, MongoDB

Prometheus/Loki/Grafana

Understanding of HTTP, DNS, SSL protocols

Quick learning abilities

Solve difficult tasks in a short time

English upper-intermediate оr higher

Responsibilities:

Containerization, migration, automation of web applications

Support and deployment of applications and servers, infrastructure troubleshooting

Creating documentation for teamwork

Ensuring the operability of all systems, testing and upgrades

Search and management of new technologies for optimal performance

What we provide:

Part-time

Fully remote 

Flexible working hours

Adequate leadership

We are looking for a Java Software Engineer with strong technical skills. You'll join a team of professionals to work on IoT/Big Data projects.

You will be working with:
- Modern Java (most of our projects are Java 17, we don't use anything lower Java 11)
- Modern approaches (we use microservice-based and monolith architecture where appropriate)
- A team of experts like you
- IDEs of your choice

Responsibilities:
- Design and implement components of large software systems
- Design and implement REST APIs to be consumed by the frontend, mobile, and edge computing devices.
- Writing unit and integration tests
- Performing code reviews

Requirements:
- Good spoken and written English
- Knowledge of data structures and algorithms
- Strong knowledge of Java 8 +
- Knowledge of the Spring infrastructure (IoC, Data, Web, AOP)
- Familiarity with modern design patterns
- Experience with Spring Boot
- Experience with AWS(Amazon Web Services) will be a plus
- Knowledge of SQL
- Experience with Maven or Gradle
- Experience with Git
- Basic knowledge of Linux/Unix

Benefits:
- Proper compensation
- Coverage of paid certifications
- Remote
- 20 days vacation
- 24 days sick-leave

We DON'T have:
1. Corporate bullshit
2. Bureaucracy
3. HRs, People Partners, Happiness Managers, Wellbeing Coaches (see point 1.)
4. Java 7
5. <Ask me during the interview about this, you are going to like it>

About the interview process ( a.k.a. a bonus for those who can read so much text):

1. Brief introductory call

2. Deep technical interview, the interview consists of two rounds, one hour each

Topics we usually cover:

- Data structures and algorithms basics. You won't be sorting anything, at least at this stage

- Network protocols basics (application, and transport levels)

- Data encryption basics (encryption, approaches, digital signatures, popular algorithms)

- Java (language basics, concurrency, streams, features from recent releases)

- English (you will have to answer some of the questions in English, so we understand you can communicate with English-speaking colleagues if needed)

- Databases (SQL basics)

- Working in a team (version control, peer reviews)

- Your past experience

About AgileVision.io
We are creating SaaS(software-as-a-service) from scratch for our clients. Usually, it's a B2B(business-to-business) for logistics and manufacturing. This means we deal a lot with IoT, edge computing, and ML. Our main backend language is Java.

AgileVision.io is an official AWS Partner and we build most of our solutions on AWS.

We invite you to share responsibility for the quality of growing information system used by hundreds of businesses in US and other countries.

You will be working to identify opportunities for improved software development and quality assurance processes. You will have to understand and analyze business requirements and write manual and automation test cases. You will be working closely with the Development and Product teams to achieve the highest levels of application quality.

Requirements:

∙ Proven 2+ year of experience as a Software Tester for web based products

∙ Strong computer background, analytical skills, attention to details

∙ Ability to learn and grow professionally

∙ Good English skills both written and verbal

∙ Hands on experience in manual and automated testing

∙ Some SQL knowledge

∙ Basic knowledge of automated testing tools (i.e. Selenium WebDriver)

Desirable Experience:

∙ Bug-tracking applications

∙ Agile methodologies

∙ C#

∙ PowerShell

∙ iOS apps testing experience

∙ REST, SOAP testing experience

∙ Performance testing experience

We offer:

∙ Interesting and challenging work with an established mature professional team that works with the same company for 10+ years

∙ Friendly environment, close informal collaboration with company management and product team

∙ Exciting projects involving newest technologies

∙ Professional development opportunities

∙ Excellent compensation and benefits package

∙ Modern and convenient office facilities

We are looking for a talented React Developer to join our team and develop innovative projects using JavaScript, React, HTML5, CSS3.

Ideally, you need to have a passion for programming, great soft and English skills.

It is a full-time position in Lviv.

Requirements:

▪️ More than 6 months of commercial experience in developing

▪️ Solid understanding of React

▪️ Strong JavaScript skills, JQuery, AJAX

▪️ Knowledge of HTML5 and CSS3

▪️ At least intermediate English level (written, spoken)

▪️ Desire to work and study new technologies, approaches and best practices

▪️ Attentive to details

Will be a plus:

▪️ Experience with GIT/svn, REST, Social Network API’s

▪️ Bachelor’s degree in Computer Science or an equivalent

Responsibilities:

▪️ Develop a web application with React, ES6, Webpack etc.

▪️ Write clean, maintainable, and efficient code

▪️ Implement front-end functionality according to requirements

▪️ Staying current on new technologies and best practices

▪️ Communicate with the customer and team members

We offer:

▪️ Flexible working schedule

▪️ 18 days of paid vacation

▪️ Comprehensive compensation packages for educational and sports pursuits

▪️ Internal knowledge-sharing talks

▪️ Access to the corporate bookshelf

▪️ Comfortable and cozy office in close proximity to the city center

▪️ Engaging team events and activities

We are looking for a team player!

Are you interested? We would be glad to receive your CV.

We are looking for C# developer for our music software

( work in Lviv or Kyiv,

remote work possibility ):

www.MusConv.com

About the project:

MusConv is b2c music software which helps people synchronize their music between music services: Spotify, Apple Music, YouTube Music, Amazon Music, Tidal and others.

We offer:

Challenging interesting project

Professional growth and development program

Flexible schedule

Team of highly talented individuals

Access to developer courses like https://www.pluralsight.com

Mentor: code reviews, studying( fiddler, postman, asynchronous programming, etc.)

5% of sources is simple gui based on xaml( avalonia similar to wpf )

95% of sources is regular .net standard( backend to interact with different music services )

We are looking for C# developer to implement new features

Iterasec works with clients worldwide, helping them find vulnerabilities and secure their products. Our projects range from mobile/web applications to complex modern cloud and automotive stacks. We work with both small product companies as well as Fortune 500 enterprises.

We are looking for a talented and motivated Junior Pentester who will join our security team to work on penetration testing and vulnerability/cloud security assessment projects.

We expect a short motivation letter where you can explain your skills, achievements and motivation.

Required skills

- Solid non-commercial cybersecurity experience, such as HTB/THM

- Junior-level cybersecurity certifications would be a plus.

- Comfortable with basic application security testing and common vulnerabilities (like OWASP Top 10, CWE Top 25) and cybersecurity fundamentals

- Strong basic IT skills: Linux, networking (TCP/IP, DNS, HTTP etc.)

- Some experience in scripting/coding languages, such as Java, JS, Python, Shell, etc.

- Strong drive to learn and develop cybersecurity skills

- Technical English (Intermediate)

We offer

- Good salary + bonus system

- Rewarding environment: brilliant team ready to share knowledge and collaborate

- Support in obtaining professional certifications, such as BSCP, OSCP, eWPTX, cloud certifications, etc.

- Courses and conferences which are relevant to the position are sponsored by the company.

- We are a remote-first company with full WFH support and a flexible work schedule.

Responsibilities

- Execute penetration tests and security assessments as part of a team, including internal/external networks, web and mobile applications, Windows and Linux environments, cloud architectures, IoT devices, and more

- Create assessment documentation and reports, clearly identifying vulnerabilities and associated remediation steps

- Conduct security research

We are expanding our embedded team due to a growing number of tasks related to system build and integration for embedded devices. As an Embedded Software Engineer, you will work across multiple platforms (Rockchip, MTK, Allwinner, Silicon Labs MCUs, etc.), focusing on Buildroot-based systems, BSP, Linux kernel, and driver integration. You will be responsible for customizing rootfs, optimizing CMake-based build environments, and automating build processes for Linux/Android/RTOS projects.

Key Responsibilities:

• Develop, configure, and maintain Buildroot-based embedded Linux builds.

• Integrate and customize BSP, bootloader, and Linux kernel.

• Create and maintain CMake-based cross-compilation build systems.

• Optimize and streamline the build process, integrating with CI/CD pipelines.

• Debug low-level issues (kernel, boot, hardware-software integration).

• Collaborate with hardware teams to ensure stable driver and peripheral integration.

• (Optional) Support RTOS-based firmware development (FreeRTOS, Zephyr).

Technical Requirements:

• Strong hands-on experience with Buildroot, Yocto, or similar embedded build systems.

• Solid expertise in CMake and cross-compilation workflows.

• Proven experience with Linux kernel, BSP, and driver development.

• Solid understanding of embedded systems and ARM architecture.

• Proficiency in C/C++ (Python/Bash scripting is a plus).

• Familiarity with Git/Mercurial.

• Ability to debug and analyze system-level and peripheral integration issues.

Nice to Have:

• Experience with RTOS (FreeRTOS, Zephyr).

• Knowledge of hardware interfaces (I2C, SPI, UART, USB, Ethernet).

• Android AOSP / NDK experience.

• Familiarity with Wi-Fi, Bluetooth, Audio codecs.

Soft Skills:

• Strong analytical and problem-solving mindset.

• High attention to detail and code quality.

• Responsibility and ownership of deliverables.

• Ability to collaborate effectively in cross-functional teams.

Education & Language:

• Bachelor’s degree in Computer Engineering, Electrical Engineering, or related field.

• English – Intermediate or higher (for documentation and teamwork).

Profile:

• We provide customer support and Implementation for business in retail and hospitality all over the world that use our products

• We are looking for enthusiastic team players with excellent English communication skills and desire to be a part of the international Client support team (based in Kyiv)!

• You are an analytical thinker, technical-minded and customer-oriented person with problem-solving abilities and strong customer’s needs understanding. Ideally, you have a Technical background or a strong desire to explore the field of software products.

Requirements:

• Fluent and literate English (MUST!);
• Ability to work night shifts (Kyiv time zone: 16:00 — 01:00.)

• An experienced PC user (General Microsoft Windows knowledge).

• Ideally, you have Technical background or strong desire to explore the field of software and Hardware products;

• Training and time-management skills

Soft Skills:

• Communication;

• Listening;

• Conflict Resolution;

• Empathy;

• Positivity;

• Self-Control.

Would be a plus:

• Previous experience in support function (is a big plus);

• Technical background and IT education ( is a huge plus).

• Experience in working with CRM and Jira;

Why you should choose us:

• We are a product company and you will have a great opportunity to work with advanced and progressive products;

• Our position — great opportunity to implement your ideas!

• We are focused on growth and innovation;

No bureaucracy.

Compensation & Benefits:

• Work in successful U.S. IT company with an international team;

• Participation in challenging project that is famous and successful in the U.S. market;

• Career and proficiency development plans;

• Competitive salary;

• Paid vacation and sick leave;

• Health insurance;

• Free English courses with native speakers;

• Referral program;

• Friendly atmosphere and corporate events;

• Comfortable office near downtown close to the metro station.

Responsibilities:

• Help existing and prospective customers by providing them timely and accurate information about eHopper products;

• Identify, analyze and troubleshoot technical issues and provide effective solutions;

• Respond to support queries via email, phone, and chat;

• Address procedural, configuration, software, hardware, and merchant services related issues;

• Provide clear and complete documentation and notes on all service inquiries.

About company:

eHopper is a product company located in New York that provides business management solutions to businesses around the world. Their key product, the eHopper Point Of Sale system enables business retailers to efficiently manage their operations, cut costs and promote repeat business with their customers. Today, eHopper Services, LLC continues to provide point of sale solutions, improve upon their products and influence innovation with business management.

Project Description:

eHopper’s primary product is a point-of-sale system utilized in retail and hospitality industry around the world. We continue meeting the challenges with a strong management team and a support infrastructure committed to work closely.

We need to keep the pace with the market changes and stay ahead of the curve and competition.

Our goal is to continuously improve our product respond to market!

Learn more about eHopper on ehopper.com

Our Customer Support Team works directly with our clients all over the world.

Our customer support agents have the unique opportunity of becoming experts in the field by learning the specifics of the retail industry and obtaining not only technical skills but knowledge of business processes, operational procedures and customers’ daily needs as well.

As a member of the eHopper Team you will be able to start and build your career in an international company where you can use your English skills and communicate on a daily basis with native speakers.

You will gain valuable knowledge and experience by collaborating closely with our Development team in Kiev and colleagues in our NY office.

Our culture of continuous career development will also provide you excellent opportunities for accelerated growth and promotion.

Our company RemSoft.Dev has opened vacancies for the position of Full Stack Middle .Net Developer for interesting projects. You’ll work with an experienced team and new technologies - .NET Core and .NET 5

What do we offer, you may ask.

1. Remote cooperation. Work where and how you feel comfortable

2. Competitive monthly payments for your work according to your skills and career opportunities

3. Full (7-9 hours a day) or partial (4-5 hours a day) employment

4. Projects on .NET Core, F#, Blazor, TypeScript, Angular, Azure and other latest technologies that are nice to work with

5. A friendly team that will be able to help and advice in case of difficulties.

6. Loyal and honest leadership

What we are looking in our candidates:

1. 2+ years of experience with .NET/C#

2. 1+ years of experience with JavaScript

3. Excellent knowledge of OOP

4. Experience and understanding of Git and GitHub

5. Critical thinking

6. Willing to learn and gain new skills

7. English - B1+

About US

Headquartered in New York City, USA, B2B Soft is an established leader in the development, implementation, and support of retail management systems (RMS) designed for the wireless retail industry. With over 10 years in business, we have built a best-in-class point of sale (POS) solution recognized by major telecom operators and serving customers across North America.

As a true product organization, we work seamlessly with clients to ensure that the evolution of the platform is always in sync with their business needs, with a solid infrastructure behind it. Recent addition of the autonomous product suite well coincides with the post COVID-19 reality and enables telecom operators to conduct all aspects of their commerce via kiosks.

A client’s success is our priority. Innovation is our tool. We care about customers by going above and beyond in intellect and effort. We are honest and curious. And we are agile, applying our knowledge and skills to best serve our clients and partners. Here, you will work with advanced products, be part of open and transparent culture, learn both IT and business and advance quickly.

Summary:

As a Customer Support Specialist, you will have an opportunity to join a very dynamic team and become a trusted advisor to our clients, with an opportunity to contribute to the overall quality of our product by sharing feedback with the relevant stakeholders. You will interact with US busines owners, learn about the telecom industry and embark on an IT career path within the organization.

Key Responsibilities:

• Help existing and prospective customers by providing timely and accurate information about B2BSoft products

• Identify, analyze, and troubleshoot technical issues and provide effective solutions

• Respond to support queries via phone, chat, and email

• Help Customers with software and hardware configurations, billing, and merchant services related requests

• Provide clear and complete documentation and notes on all service inquiries

Our requirements:

• Fluent/advanced English (MUST!)

• Spanish is a huge +

• Ability to work night shifts (6 shifts: Kyiv time: 15:00 – 00.00; 16:00 – 01.00; 17:00 – 02.00; 18:00 – 03.00; 19:00 – 04.00; 21:00 – 06.00)

• An experienced PC user (General Microsoft Windows knowledge)

• Existing technical background or a strong desire to explore the field of software and hardware products

• Training and time-management skills

• Communication and listening

• Understanding of conflict resolution

• Empathy, positive attitude and Self-Control

Optional:

• Previous experience in the Support field

• Technical background and IT education

• Experience in working with CRM and Jira;

Compensation/Benefits:

Our culture is a collaborative, hands-on community where all voices are welcome at the table and existing associates’ welcome new employees with open arms. We are in an exciting phase of accelerated growth, and we welcome motivated individuals keen to hit the ground running. We also offer career and proficiency development plans and free English courses with native speakers.