28software
- Outstaff, Consulting / Integrator
- 51-100
- 2019
- Київ, Warszawa
- Cloud technologies, GameDev, Mobile, Software Development & Hi-Tech, WEB / UI / UX
Переваги для працівників
- Fitness Zone
- Relocation assistance
- Team buildings
- Велопарковка
- Гнучкий графік роботи
- Кава, фрукти, перекуси
- Опціони на акції
- Парковка для авто
- Регулярний перегляд зарплатні
Вакансії 28software
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- Python
- Hugging Face Transformers
- LangChain
- PyTorch
- TensorFlow
- XGBoost
- Random Forest
- Logistic Regression
- AWS
- AWS Lambda
- Amazon S3
- AWS SageMaker
- RAG
- LLM
- CI/CD
- NLP
Intelliarts is seeking a Machine Learning Engineer to join our growing ML Team.
We are a cross-functional team focused on advancing Intelliarts’ capabilities in the Machine Learning domain. In this role, you’ll collaborate closely with current and prospective clients to explore how ML can address their business challenges – through research, prototyping, and deploying innovative solutions.
You’ll join a team that is currently particularly focused on Large Language Models (LLMs), helping organizations leverage AI to enhance efficiency and automation. Our track record includes building impactful ML-driven applications that have contributed to over $1 billion in client revenue.
This position is ideal for someone with a strong foundation in general machine learning and LLM technologies, excellent problem-solving skills, and the ability to clearly communicate complex technical ideas – particularly to clients based in the USA.
Responsibilities
- Leverage transformer-based models (e.g., GPT, BERT, LLaMA) for domain-specific tasks such as content generation, summarization, and semantic search.
- Build scalable, production-grade RAG pipelines using tools like LangChain, LlamaIndex, or custom frameworks.
- Design and deploy vector search solutions using tools such as FAISS, Qdrant, or Pinecone; optimize dense retrieval pipelines for recall, relevance, and latency.
- Collaborate with DevOps to productionize ML models, ensuring reliability, monitoring, and scalability using cloud infrastructure (AWS preferred).
- Build robust data pipelines to support ML use cases – including indexing, tokenization, and dataset preparation.
- Develop and optimize traditional machine learning models (e.g., tree-based, linear models) for use cases such as classification, regression, ranking, or forecasting.
- Apply best practices in ML model validation, including data splitting strategies (e.g., time-based, stratified), cross-validation, performance tracking, and monitoring in production.
- Work closely with data scientists, software engineers, and product stakeholders to deliver and iterate on ML-based products.
Personal Profile Overview
- Degree in Data Science, Computer Science, Software Engineering or related field
- Stability in previous employment history with a tendency to remain with employers for extended periods
- Experience in managing diverse project activities (not just coding, but also requirements analysis, preparing estimations)
- Clear and effective communication skills, both verbal and written, and ability to convey ideas, information, and messages accurately and efficiently
- Proficiency in fostering effective collaboration and teamwork activities
- Ability to analyze information, assess situations, and make decisions based on sound reasoning and logical evaluation
- Focus on delivering exceptional customer experiences and prioritizing customer satisfaction
- Analytical thinking, problem-solving abilities, and strategic approach to technical challenges
- Transparency in sharing information within a team and company
- Willingness to acquire new knowledge and insights to enhance professional growth and performance
Required skills
- 4+ years of experience in ML or Data Science roles, with at least 1 year focused on LLM or NLP-based systems.
- Hands-on experience with Python and libraries like HuggingFace Transformers, LangChain, PyTorch, TensorFlow, or similar.
- Experience developing and validating classic ML models (e.g., XGBoost, Random Forest, Logistic Regression) for structured or tabular data.
- Strong grasp of model evaluation techniques: precision, recall, ROC-AUC, calibration, error analysis, etc.
- Proven track record of building and deploying ML models into production environments.
- Deep understanding of machine learning algorithms, embeddings, and transformer architectures.
- Solid knowledge of retrieval methods, vector search engines, and hybrid search strategies.
- Familiarity with cloud platforms (AWS strongly preferred), including model hosting, Lambda, S3, or SageMaker.
As a plus
- Experience with fine-tuning large models on custom datasets.
- Knowledge of RAG architectures, search augmentation techniques, and content attribution workflows.
- Experience with prompt engineering, few-shot learning, or alignment techniques.
- Experience designing robust ML pipelines, including model drift detection, retraining workflows, and monitoring systems.
- Familiarity with LLM evaluation methods, hallucination detection, or explainability.
- Understanding of software engineering practices (version control, CI/CD, testing).
- Contributions to open-source AI projects or published work in NLP/LLM areas.
- Java
- JavaScript
- React
- HTTP
- REST
- Unit testing
- Kafka
- AWS SQS
We are looking for a Software Engineer to join a HubSpot engineering team working on the development of the Marketing Events functionality within the HubSpot ecosystem. Our mission is to help marketers track the success of their events and improve lead engagement by collecting, processing, and storing data about events and attendees.
You’ll be involved in creating new features, maintaining and improving existing ones, and solving real user issues. Our team also owns and supports integrations with third-party platforms like Eventbrite and GoToWebinar, enabling seamless synchronization of event data with HubSpot. Right now, we’re also focused on redesigning the Marketing Events page and migrating to HubSpot’s new UI library, replacing outdated components with modern and consistent UI elements.
HubSpot has a great engineering culture, carried by great teams in the USA, Ireland, Germany, Ukraine, and Armenia. The platform consists of thousands of microservices built with Java 21, lightweight DropWizard framework, and Google Guice dependency injection. It’s huge and you’ll have to deal with a lot of other stuff like Apache Kafka, Amazon SQS, S3, MySQL, HBase, and much more. The front end consists of single-page applications built with ECMAScript 6, TypeScript, React, Redux, and Sass. The Platform Team has built state-of-the-art infrastructure that allows developers to deploy their code to QA and Production environments with just a few button clicks. This enables you to focus entirely on designing and developing software – there is nothing easier than triggering a build and merge here.
HubSpot has a great onboarding course where you will get in touch with HubSpot’s infrastructure and then with our integration. During this period you will be actively involved in our working process with onboarding buddy. When your trial is finished you are going to be involved as DRI (Directly Responsible Individual) on new features and in PagerDuty rotation.
Responsibilities
- Communicate directly with product management and peers in Boston and Dublin, other HubSpot development teams to shape out requirements
- Work on the front end using React, ECMAScript 6, and Sass, contributing to single-page applications and UI improvements using HubSpot’s new UI library
- Create new and extend existing microservices using Java 21, DropWizard, and whatever technology/tools required to complete a particular task
- Cover your code with all kinds of automation tests (unit, integration, acceptance, API, end-to-end)
- Fully own the software you’ve developed: design, develop, test, release, and support in both stage and production environments
Personal Profile Overview
- Degree in Computer Science, Software Engineering or related field
- Stability in previous employment history with a tendency to remain with employers for extended periods
- Experience in managing diverse project activities (not just coding, but also requirements analysis, preparing estimations)
- Clear and effective communication skills, both verbal and written, ability to convey ideas, information, and messages accurately and efficiently
- Proficiency in fostering effective collaboration and teamwork activities
- Ability to analyze information, assess situations, and make decisions based on sound reasoning and logical evaluation
- Focus on delivering exceptional customer experiences and prioritizing customer satisfaction
- Analytical thinking, problem-solving abilities, and strategic approach to technical challenges
- Transparency in sharing the information within a team and company
- Willingness to acquire new knowledge and insights to enhance professional growth and performance
Required Skills
- 3+ years working with Java and JavaScript
- Front-end development experience (React or other modern JS frameworks)
- Excellent understanding of the OO design/programming paradigm
- Solid background in computer science and programming
- Strong knowledge of databases and networks (HTTP/REST)
- Good understanding of unit testing/test automation
- Experience or strong knowledge in microservice architecture and message broker systems such as Kafka, Amazon SQS, etc.
- English Upper-Intermediate (B2)
As a Plus
- Strong learning and development abilities
- Ability to work from the office in Lviv
- SDLC
- Rest API
We are looking for a QA/AQA Engineer to join a dedicated development team for the US company, a forward-thinking company specializing in EV charging solutions, dedicated to driving innovation in sustainable living. Their mission is to revolutionize the way energy is consumed and managed by creating cutting-edge EV platforms that empower users to monitor and optimize energy usage in real-time. With a strong commitment to environmental responsibility, they focus on delivering scalable and efficient solutions that support the transition to a greener future.
Personal Profile Overview
- Degree in Computer Science, Software Engineering or related field
- Stability in previous employment history with a tendency to remain with employers for extended periods
- Experience in managing diverse project activities (not just coding, but also requirements analysis, preparing estimations)
- Clear and effective communication skills, both verbal and written, ability to convey ideas, information, and messages accurately and efficiently
- Proficiency in fostering effective collaboration and teamwork activities
- Ability to analyze information, assess situations, and make decisions based on sound reasoning and logical evaluation
- Focus on delivering exceptional customer experiences and prioritizing customer satisfaction
- Analytical thinking, problem-solving abilities, and strategic approach to technical challenges
- Transparency in sharing the information within a team and company
- Willingness to acquire new knowledge and insights to enhance professional growth and performance
Required Skills
- 4+ years of experience working as a Software Testing Engineer
- Excellent understanding of QA processes, testing methodologies, and best practices
- Strong experience in requirements analysis and test case development
- Deep understanding of SDLC, agile processes, and testing approaches
- Hands-on experience in REST API testing
- Expertise in testing mobile applications and web platforms
- Experience with automation testing
- Strong collaboration and communication skills, including the ability to work independently and proactively
- Ability to build QA processes and take full ownership of quality assurance activities
- At least Upper Intermediate level of English
As a plus
- Experience in testing communication protocols like OCPP or OCPI
Responsibilities
- Communicate and collaborate closely with developers, product owners, and other stakeholders to understand requirements and ensure high-quality deliverables
- Analyze product requirements, specifications, and technical documentation to identify test scenarios, edge cases, and quality risks
- Design, write, and maintain detailed, comprehensive, and well-structured test cases and test plans
- Perform manual testing of web and/or mobile applications, including functional, regression, integration, and exploratory testing
- Identify, record, document thoroughly, and track bugs using appropriate tools (e.g., Jira, Xray)
- Ensure test coverage and traceability of test cases to business requirements
- Contribute to continuous process improvement by sharing QA insights and identifying gaps in product quality
- Assist in setting up and maintaining test environments and test data
- Monitor application performance and report performance issues
- Act as a quality advocate within the team, promoting a culture of continuous improvement
- Participate in sprint planning, grooming, and QA-related ceremonies to ensure quality is integrated throughout the development cycle
- Support pre-release validation, smoke testing, and post-release monitoring as needed
- Create and maintain automated test suites
- Support of stakeholders with live testing
- Node.js
- TypeScript
- MongoDB
- Redis
- AWS
- ECS
- AWS Lambda
- AWS SQS
- Amazon API Gateway
- ClickHouse
- Kafka
We are looking for a Middle Strong Node.js Developer to join our team and play a key role in building and scaling high-performance backend services. You will be responsible for designing and developing robust, scalable APIs and distributed systems, ensuring seamless data flow and system efficiency. This role is perfect for a skilled backend engineer who thrives in complex codebases, enjoys solving challenges, and is eager to work with modern technologies like AWS, Redis, Kafka, and Nest.js.
Responsibilities:
- Design and implement scalable backend services and APIs using Node.js;
- Optimize data storage and retrieval using MongoDB and Redis;
- Deploy, manage, and optimize services on AWS (ECS, Lambda, SQS, API Gateway);
- Lead architectural decisions for high-scale, complex systems, ensuring they align with both immediate needs and future scalability;
- Work closely with frontend engineers, DevOps, and product teams to deliver well-engineered solutions;
- Write clean, optimized, well-documented code and contribute to code reviews;
- Guide and mentor junior developers, helping them grow their technical expertise;
- Continuously improve system efficiency, scalability, and security.
Requirements:
- 3+ years of backend development experience using Node.js;
- Strong proficiency in Node.js, Nest.js, TypeScript, MongoDB, Redis, and different AWS services (ECS, Lambda, SQS, API Gateway);
- Proven ability to design, maintain, and optimize complex systems;
- Strong skills in writing optimized, efficient, and high-performance code;
- Experience working with distributed systems and microservices architecture;
- Ability to navigate complex codebases, identify improvements, and iteratively enhance system performance;
- Strong problem-solving skills and the ability to translate business requirements into scalable, maintainable solutions.
- Experience with event-driven architectures and messaging systems;
- Clickhouse/Kafka experience is a plus.
- React
- JavaScript
- React Native
- Flutter
- AWS
- GCP
- Azure
- CI/CD
- Docker
- Kubernetes
- API
- REST
- GraphQL
We are looking for a Front-End/Mobile who will define the technical vision, design complex systems, and make key architectural decisions while leading development.
Responsibilities:
- Lead the design and implementation of scalable architectures and integrations.
- Take ownership of technical decision-making and engineering strategies.
- Collaborate with Western clients, translating business requirements into tech solutions.
- Balance 70% Tech / 30% Management, overseeing both development and leadership aspects.
- Ensure problem-solving is a priority rather than process administration.
- Participate in evening calls with US-based stakeholders.
Requirements:
- Strong experience in Frontend (React, JavaScript) and Mobile (React Native, Flutter) development.
- Proven track record in Solution Architect, CTO, or Project Lead roles.
- Hands-on experience in designing complex, scalable architectures.
- Solid understanding of cloud infrastructure (AWS, GCP, or Azure) and microservices architecture.
- Experience with DevOps practices, CI/CD pipelines, and containerization (Docker, Kubernetes).
- Strong knowledge of API development (REST, GraphQL) and database design.
- Ability to manage teams and development processes, ensuring smooth project execution.
- Excellent communication skills for working with business stakeholders.
- Proactive leadership, independence, and the ability to take full ownership of technical decisions.
- Strong problem-solving mindset, with a focus on delivering results.
Довідкова інформація
| Компанія: | 28software |
|---|---|
| Адреса: | 04112, м. Київ, вул. Дорогожицька, 3 |
| Юридична назва: | ТОВ "28СОФТВАРЕ" |
| Телефон: | +38 067 363 46 88 |
| E-mail: | info@28software.com |
| Офіційний сайт 28software: | 28.software |
Телефон, контакти компанії
- м. Київ, вул. Дорогожицька, 3;
- +38 067 363 46 88;
- info@28software.com
* Інформацію взято з офіційного сайту компанії "28software" 28.software та інших відкритих джерел.