Jobs

WebSpellChecker is a product company that builds AI-powered text quality solutions used by engineers, businesses, and individual users worldwide. Our products help people communicate more clearly by providing spelling, grammar, and style correction across different platforms and environments. The core product is WProofreader, available as a software development kit (SDK) and browser extension that can be used as SaaS and on-premise solution.

We are looking for a Product Designer to own the end-to-end visual and user experience across our entire product ecosystem. As the sole designer in the company, you will have full ownership of product interfaces, websites, as well as pitch decks, brand assets, and other marketing graphics. 

If you thrive in a data-driven environment, enjoy elegant solutions, and want to help shape our brand evolution, this role is for you.

What you will do

• Design UI and UX for our core application, browser extension, client portal, and admin panel.
• Drive data-driven UX improvements based on analytics rather than gut feel by conducting competitor analysis, customer interviews, and A/B tests.
• Create sales and marketing graphics, including pitch decks, presentations, social media content and merch. 
• Implement company rebranding across all resources in collaboration with an external design agency. 

• Establish AI visual guidelines, creating prompt rules and design instructions to help team members generate consistent, on-brand visual graphics. 

   

Knowledge and skills required

• 3+ years designing SaaS or complex web products in a startup or agency setting.
• Intermediate+ English level.
• Proficiency in Figma, Adobe Suite, and Google Workspace, basic HTML/CSS skills.
• Solid knowledge of web accessibility principles.
• A data-driven product mindset, with hands-on experience running competitor research and A/B tests.
• Experience with Webflow or similar site builders. 
• Practical experience with AI tools.

• High autonomy, feeling confident and comfortable operating as the sole designer in a remote, fast-paced environment. 

   

Would be a plus

• Experience with corporate rebranding or brand repositioning. 

   

We offer you

• Flexible schedule.
• Long-term employment.
• Assistance in professional growth through educational programs and conferences.
• Everything you need to set up a modern workstation/laptop.
• Generous number of paid days off and sick leaves.

Client

Our client is an international SaaS company developing tools that empower businesses to create highly engaging digital experiences. Their solutions are trusted by thousands of organizations worldwide to collect, analyze, and act on user data effectively.

Project overview

The project is an interactive form builder designed for marketers, researchers, HR, sales, and customer experience teams to create engaging, conversational online forms, surveys, and quizzes.

Key features:
Visually appealing conversational design optimized for high completion rates
AI-powered data interpretation
Workflow and logic builders for personalized experiences
Brand customization options
Seamless integrations with various tools to automate data collection and streamline workflows

Position overview

We are seeking a Full Stack Engineer who builds with AI in the loop — both as a daily development practice and as a product capability. You are fluent with coding agents (Claude Code, Cursor, Copilot) and ship faster because of them, not despite them. You understand how to design, prompt, evaluate, and operate LLM-backed features in production — including model selection, context engineering, evals, guardrails, and cost and latency tradeoffs.

Beyond AI, you have deep Golang and React/TypeScript expertise and own features end-to-end: from understanding business requirements, through writing and testing code, to deployment and production monitoring. This role requires strong autonomy, proactive communication, and the ability to deliver reliable, scalable solutions in a modern cloud environment.

This position operates according to the CET time zone.

Responsibilities

• Design and ship LLM-powered product features: prompt design, retrieval, tool and function calling, structured outputs, streaming, evaluation harnesses, and guardrails.
• Operate AI features in production: monitor quality, latency, cost, and failure modes; iterate on prompts, models, and architectures based on real usage.
• Use AI coding tools (Claude Code, Cursor, Copilot) as a core part of your workflow to accelerate delivery without compromising code quality.
• Design, develop, and maintain backend services using Golang and frontend applications using React/TypeScript.
• Collaborate with product managers, designers, and other engineers to translate business requirements into technical solutions.
• Implement event-driven architectures leveraging Kafka for real-time data processing.
• Manage and optimize AWS environments, ensuring scalability and reliability.
• Define and maintain infrastructure using Terraform and deploy services in Kubernetes clusters.
• Build and maintain CI/CD pipelines in Jenkins for automated deployments.
• Ensure high-quality code through comprehensive testing and code reviews.
• Monitor application performance and troubleshoot issues in production environments.
• Contribute to UI/UX improvements and ensure seamless integration between frontend and backend.

Requirements

• Demonstrable production experience shipping LLM-powered features. Be ready to walk through a feature you built: prompts, evaluation approach, failure modes you fixed, and how you measured success.
• Hands-on with at least one major LLM provider's API (Anthropic, OpenAI, AWS Bedrock, or equivalent), including streaming, tool use, and structured outputs.
• Daily use of AI coding assistants in your workflow; able to articulate where they help, where they hurt, and how you maintain code quality.
• Strong, in-depth knowledge of Golang.
• Experience delivering complex backend systems from design to production.
• Solid background with Kafka and event-driven architectures.
• Hands-on experience managing AWS environments.
• Proficiency with Terraform for infrastructure-as-code.
• Experience deploying and operating services in Kubernetes.
• Building CI/CD pipelines in Jenkins.
• Proven ability to ensure quality through comprehensive testing.
• Strong proficiency in React and TypeScript.
• Experience contributing to front-end features, UI components, and client-side logic.
• Ability to seamlessly integrate frontend with backend services.
• Excellent English communication skills, written and spoken.
• Self-driven and able to work independently while managing workload effectively.

Nice to have

• Experience with agent frameworks, multi-step tool-use loops, or RAG systems at scale.
• Built or maintained an evaluation pipeline (offline evals, LLM-as-judge, human review loops).
• Open-source contributions, published writing, or talks on applied AI engineering.

Join us to develop SLAM, Visual-Inertial Odometry (VIO), and state estimation solutions for real-world robotics and navigation systems.

We're looking for an engineer with a strong mathematical background and extensive experience in classical and geometric computer vision. You'll independently design, prototype, and optimize computer vision algorithms, quickly turn research ideas into working solutions, and contribute to technical decisions across the development process.

Responsibilities:

• Design, develop, and optimize classical and geometric computer vision algorithms
• Work with feature tracking, matching, and geometric processing
• Develop and improve SLAM / VIO and state estimation pipeline components
• Integrate and test multi-sensor fusion systems (camera + IMU)
• Design and run experiments, evaluate algorithm performance
• Translate research papers into practical implementations
• Collaborate with cross-functional engineering teams

Required Qualifications:

• 5+ years of professional experience in computer vision, robotics, or a related field
• Deep understanding of linear algebra, statistics, and optimization methods
• Strong hands-on experience with classical and geometric computer vision
• Strong understanding of camera models, feature detection and tracking, geometry, and state estimation
• Proven experience developing SLAM, Visual-Inertial Odometry (VIO), or related localization systems
• Strong C++ development skills and experience with Linux
• Experience designing, implementing, and optimizing production-ready computer vision algorithms
• Ability to independently investigate research papers and implement state-of-the-art methods
• Experience working on R&D projects
• Degree in Computer Science, Mathematics, Physics, Engineering, or related STEM field

Nice to Have:

• Experience with Python
• Knowledge of neural networks and CV libraries/frameworks (OpenCV, NumPy, PyTorch, ONNX, Eigen, etc.)
• Experience with sensor fusion techniques
• Familiarity with embedded or real-time systems
• Robotics or navigation background

We are looking for a Computer Vision Engineer with strong experience in deep learning and production computer vision systems.

The role involves developing and bringing computer vision models into production, covering the full lifecycle from training and evaluation to deployment and system integration.

Responsibilities:

• Develop and improve Computer Vision and Machine Learning models
• Design and implement solutions for object detection, classification, segmentation, and tracking
• Work with large-scale image, video, and telemetry datasets
• Prepare, process, and maintain datasets for model training and evaluation
• Manage model training, validation, and testing workflows
• Optimize models for production deployment and real-time performance
• Integrate ML models into software services, applications, and APIs
• Analyze model performance and identify opportunities for quality improvement
• Participate in the design and architecture of AI components within the product ecosystem
• Collaborate closely with Backend, Infrastructure, Data, and Product Engineering teams
• Contribute to the development of MLOps practices and the end-to-end machine learning lifecycle.

Requirements:

• 3+ years of experience in computer vision
• High proficiency in Python
• Strong experience with deep learning and the PyTorch framework for computer vision tasks
• Research experience in computer vision with a focus on delivering results
• Experience working with thermal imaging data (thermal cameras, infrared imagery) would be an advantage
• Ability to work independently or within a small team, with a strong sense of ownership over results

Nice to Have:

• Experience with deep learning solutions for detection, tracking, image retrieval, and segmentation tasks
• Understanding of geometric computer vision principles
• Model optimization: quantization, pruning, neural network compilers
• Hands-on experience implementing low-level CV algorithms
• Experience with sensor fusion (IMU, magnetometer, GNSS, camera)
• Knowledge of C++

We are looking for a Functional Analyst for the Microsoft Dynamics 365 Finance and Operations platform to help transform the company’s financial and operational processes using modern technologies. You will join a cross-functional team working on the implementation and optimization of business solutions in the field of finance, logistics, and resource management. If you have experience working with D365 F&O and strive to influence strategic processes, this role is for you.
 

What you will do

• Gather information from and collaborate with different types of stakeholders (finance, procurement, warehouse, IT)
• Understand strategic business needs and plans for growth
• Gather and document detailed business requirements and transform them into user stories, including acceptance criteria
• Create, document, and maintain solution designs
• Execute standard and advanced configuration of the system, giving demos/prototypes to business users
• Prepare functional gap design documents
• Test new configurations and customizations — ensuring the provided functionality is in line with existing flows and satisfies stakeholders’ needs and requirements
• Organize key user validation process, support for end-to-end user acceptance testing
• Users’ consultancy and support; handle tickets as a second-level support engineer
• Follow the Change and Release management process
• Prepare release notes
• Manage tasks (AzureDevOps/Jira)
   

Your profile

• Upper-intermediate English
• >3 years’ experience with Microsoft Dynamics 365 Finance&Operations implementation and support
• Extensive experience in Microsoft Dynamics 365 Finance&Operations implementation projects
• Strong knowledge of standard D365 functionalities and most of the business processes listed below: 
  • Accounting policy (General Ledger, account structure, period close, etc.)
  • Accounts payable
  • Accounts receivable
  • Manufacturing accounting
  • Inventory accounting (closing and adjustment, inventory revaluation, inventory counting, inventory posting etc.)
  • Cost accounting
  • Tax accounting (understanding of business process flows)
  • Subscription billing (nice to have)
  • Electronic reporting
  • Experience in supply chain management flows is a plus
• Experience working in an integrated environment (and understanding of the approach of working with it)
• Experience with AzureDevops/Jira
• UML/BPMN knowledge is a plus
• Experience in preparing user stories, user manuals, and release notes
• Able to adapt requirements to both technical and business languages
• Experience with the preparation of different types of products and project documentation
• Experience with organizing validation activities (user acceptance testing)
• A technical background is an advantage
• Logical and analytical thinking 
• Independent research on solutions
• A critical thinker, detail-oriented, and self-organized

Workload — Full-time
Duration — A couple of months to start with, and it has some extension potential.
Location — EU

Working in a staff augmentation model for a US-based AI-native marketing intelligence platform (connected marketing platform).

The client expects a couple of hours of overlap until 11:30 EST (5:30 PM CET). 

Bachelor's degree in Computer Science or related field 5+ years of professional backend software development experience Strong Python development experience Experience building REST APIs using FastAPI, Flask, or similar frameworks Strong understanding of HTTP, REST, authentication, and API design Experience integrating with relational databases and cloud data platforms Experience building secure, scalable backend applications Familiarity with AWS cloud services Experience using Git and modern CI/CD workflows Strong debugging and problem-solving skills Excellent written and verbal communication skills Preferred Qualifications Experience building AI-enabled applications Experience developing platform services or internal developer platforms Familiarity with MCP (Model Context Protocol) or AI tool integration patterns Experience with Snowflake or Databricks Experience working with event-driven architectures Familiarity with Redis or distributed caching Experience integrating with third-party SaaS platforms Experience working in media, advertising, or marketing technology Familiarity with agentic AI development workflows

Primary

Python 

FastAPI 

REST APIs 

PostgreSQL 

Redis 

AWS 

Docker 

Git 

Nice to Have

Snowflake 

Databricks 

OpenAI APIs 

MCP 

LangGraph / LangChain 

Kubernetes 

Terraform

Senior Back-end (Python) developer

We are looking for a Python Engineer in our team for a permanent position (NOT only for a project).
 

Who are we?
Software Engineering company with expertise in FinTech and Blockchain. Strong software engineering culture. Fast development pace. We do things long-term. We build trust and relationships with employees and customers.
 

Who are we looking for? 

A Python developer who has

• Experience in Python on a microservice architecture 6+ years
• Experience with SQLAlchemy or Django - 5+ years
• Experience with GraphQL - 6 months+
• Experience with FastAPI / aiohttp 
• Experience with PostgreSQL
• Experience with FinTech domain 3+ years (Banking, Crypto)

Soft skills:

• English - B2
• Ability to decompose tasks
• Ability to be a part of team

What is important to us? 

• Teamwork and mutual assistance 
• Good communication skills 
• Responsibility for the team’s results 
• Ability to meet deadlines 

About us:

• Full remote
• Outsourcing and own products
• No micromanagement and no timetracking
• Comfort: work full remote with flexible hours (from 9 -11 till 17-19)
• Work-life balance: vacation 24 days + 12 days off
• Transparency: get news at monthly appointments with CEO
• Don't work with russia and support Ukraine

Just send your CV and wait for an answer

🌍 Adaptiq, on behalf of AppsFlyer, is looking for a Data Engineer

🧩 About AppsFlyer:

AppsFlyer provides a SaaS marketing analytics platform that measures and optimizes marketing activities across mobile, web, CTV, PC, and console applications. AppsFlyer is known for its massive backend production. At any given moment, thousands of servers are consuming 150+ billion mobile app events, crunching our users’ data, serving requests, and communicating on a massive scale.

To maintain the universe we call AppsFlyer, we practice modern production operations with a complete self-serve CI/CD platform, a highly integrated observability stack for our micro-services, backends, and infrastructure, a culture of ownership and eagerness for quality.

The Analytics group is responsible for showing our clients the stories their data is telling. Through complex aggregation, mission-tailored analytical databases, and carefully crafted APIs we are able to provide slice-and-dice analysis in our beautiful dashboards and through the use of external integrations.

🌟 About the Role:

As a Data Engineer within the Analytics group at AppsFlyer, you will own the end-to-end journey of event data - from ingestion and processing to storage, modeling, and API delivery. 

You will design and implement data pipelines using Apache Airflow and Spark, choose and optimize analytical databases, and integrate new components in our hybrid microservices environment. You will collaborate with product managers and cross-functional teams, troubleshoot production incidents, and influence our migration toward Google Cloud and BigQuery. This role offers autonomy over feature design, real impact on a platform handling billions of events daily, and the chance to contribute to open-source projects or speak at industry forums.

📈 Key Responsibilities:

• Develop and maintain data processing pipelines using Apache Airflow, Scala Spark or PySpark.
• Select, model and optimize analytical databases for high-throughput, low-latency queries.
• Design and implement backend services and APIs for data ingestion, aggregation and client consumption.
• Monitor system performance and stability; diagnose and resolve production issues.
• Collaborate with product managers and engineers to plan and deliver complex features.
• Drive migration efforts to Google Cloud Platform, BigQuery and modern data tooling.
• Participate in on-call rotations, alerting via PagerDuty and incident response procedures.
• Document system architecture and data flows; maintain code quality and tests.

💻 Required Competence and Skills:

• 3+ years of software development experience with a focus on data engineering.
• Practical experience with Apache Spark (Scala or PySpark) and Apache Airflow.
• Experience building and maintaining high-throughput, low-latency distributed data systems.
• Strong SQL skills and experience with data modeling for analytics workloads.
• Familiarity with JVM languages (Scala, Java, Clojure) or Python for backend development.
• Experience with cloud platforms - preferably GCP - and data warehouses such as BigQuery.
• Proven ownership of production systems and on-call incident management.
• Excellent communication skills in English for distributed teamwork.
• B.Sc. in Computer Science or equivalent practical experience.

➕ Nice to Have:

• Production experience with large-scale databases and ETL tooling.
• Hands-on background in Go or Clojure backend services.
• Experience with production-grade BigQuery ETL and data pipelines.
• Contribution to open-source projects or public speaking at meetups/conferences.
• An “AI mindset” - familiarity with tools like GitHub Copilot and emerging AI workflows.

🚀 Benefits Package includes:

• Health Insurance
• Paid Unlimited Vacation Days + all national holidays + additional recharge days
• Meals Reimbursement
• Sport Reimbursement
• Breakfast in the office
• Mental health program
• Team building, happy hours, and other team activities
• Paid sick days
• Snacks, fruits & ice-cold beer
• All new team members are provided with a brand-new Mac laptop with 2 monitors and a Starter package

Meet the YozmaTech

YozmaTech isn’t just another tech company - we’re a global team of go-getters, innovators, and A-players helping startups and product companies scale smarter and faster. We build dedicated development teams across 10+ countries, creating strong, long-term partnerships based on trust, transparency, and real impact. Here, every idea counts. We value people who are proactive, open-minded, and ready to grow. If you’re passionate about building meaningful products and want to join a team that feels like family - you’ll feel right at home with us.

Our client is a leading provider of comprehensive software solutions and support services tailored for arts education centers worldwide. Our modular platform streamlines operations by integrating class scheduling, memberships, facility management, events, ticketing, and more into a single, customizable system. By centralizing essential data, we empower organizations to focus on their mission, enhance patron engagement, and increase membership retention.

Our commitment to the arts community drives us to deliver innovative solutions that meet the unique needs of arts education

Key Requirements:
🔹 5+ years of experience as a Full-Stack Developer;
🔹 Strong proficiency in Vue.js (frontend);
🔹 Experience working with Node.js (backend);
🔹 Experience working with SQL, including complex query optimization;
🔹 Ability to work with legacy Java systems and collaborate with a Java developer for support;
🔹 Familiarity with Vercel, Digital Ocean, and Remo Hosting for deployment and infrastructure;
🔹 Experience creating custom SQL reports for clients;
🔹 Strong problem-solving skills and the ability to work with minimal documentation and testing;
🔹 Excellent communication skills to interact with clients and understand their needs;
🔹 English – Upper-Intermediate or higher.

Will be plus:
🔹 Experience with API proxy development;
🔹 Background in database performance tuning;
🔹 Prior experience working with legacy codebases.

What you will do:
🔹 Develop and maintain the Node.js backend, ensuring stability and performance;
🔹 Work with Vue.js to enhance the front-end functionality and user experience;
🔹 Support and optimize a legacy Java-based system, collaborating with a separate developer;
🔹 Analyze and work with a non-standard SQL database, creating custom reports and queries;
🔹 Deploy and manage applications using Vercel (for frontend), Digital Ocean (for API proxy), and Remo Hosting (backend for clients);
🔹 Communicate effectively with clients to gather requirements, suggest improvements, and implement changes;
🔹 Work with legacy code, addressing issues without comprehensive documentation or testing.

Interview stages:
🔹 HR Interview;
🔹 Pro-Interview;
🔹 Technical Interview;
🔹 Final Interview;
🔹 References;
🔹 Offer.

Why Join Us?
At YozmaTech, we’re self-starters who grow together. Every day, we tackle real challenges for real products - and have fun doing it. We work globally, think entrepreneurially, and support each other like family. We invest in your growth and care about your voice. With us, you’ll always know what you’re working on and why it matters.

From day one, you’ll get:
🔹 Direct access to clients and meaningful products;
🔹 Flexibility to work remotely or from our offices;
🔹 A-team colleagues and a zero-bureaucracy culture;
🔹 Opportunities to grow, lead, and make your mark.

After you apply

We’ll keep it respectful, clear, and personal from start to offer.
You’ll always know what project you’re joining - and how you can grow with us.

Everyone’s welcome

Diversity makes us better. We create a space where you can thrive as you are.

Ready to build something meaningful?

Let’s talk. Your next big adventure might just start here.

Our Customer:

Our customer is an international technology company developing a security-focused enterprise platform used by organizations with high requirements for device protection and user authentication. As part of its product ecosystem, the company is building a desktop application for macOS that integrates deeply with operating system capabilities to deliver secure authentication, device management, and identity-related functionality.

Your Tasks:

• Design, develop, and maintain low-level macOS application components that interact with system frameworks and operating system services.
• Build and enhance integrations with macOS security, authentication, and credential management capabilities.
• Ensure compatibility with new macOS releases by evaluating platform changes, API updates, and system behavior across OS versions.
• Research and implement modern Apple platform capabilities related to identity, authentication, and device security.
• Develop reliable background services, inter-process communication mechanisms, and secure application workflows.
• Improve software quality through secure build and release processes, diagnostics, logging, and issue investigation.
• Troubleshoot complex platform-specific issues and collaborate with cross-functional teams to deliver robust solutions.
• Contribute to technical design discussions and continuously improve the architecture of macOS platform components.

Required Experience and Skills:

• 8+ years of commercial software development experience.
• At least 4 years of hands-on experience developing applications for macOS with a strong focus on system-level functionality.
• Strong proficiency with Swift and/or Objective-C.
• Along with practical experience using C/C++.
• Solid experience working with macOS system frameworks, background services, inter-process communication, security mechanisms,
• and application permissions.
• Good understanding of Unix/Linux operating system concepts, including processes, permissions, IPC, and system services.
• Experience building security-sensitive software, including secure data storage, authentication flows, and cryptographic principles.
• Strong debugging and troubleshooting skills, particularly for platform-level issues and complex system interactions.
• Ability to independently drive technical investigations and deliver solutions for complex engineering challenges.
• Bachelor’s degree in Computer Science, Engineering, Mathematics, or a related technical field.
• English level Upper-Intermediate or higher.

Would Be a Plus:

• Experience with identity and access management technologies or enterprise authentication solutions.
• Familiarity with modern authentication standards and security protocols.
• Experience integrating applications with enterprise device management solutions.
• Knowledge of macOS endpoint security technologies or other advanced Apple platform capabilities.
• Previous experience working on enterprise desktop software deployed at scale.
• Exposure to low-level operating system development or performance optimization.

Quantum is a global technology partner delivering high-end software products that address real-world problems. 

We advance emerging technologies for outside-the-box solutions. We focus on Machine Learning, Computer Vision, Deep Learning, GIS, MLOps, Blockchain, and more.

Here at Quantum, we are dedicated to creating state-of-the-art solutions that effectively address the pressing issues faced by businesses and the world. To date, our team of exceptional people has already helped many organisations globally attain technological leadership.

We constantly discover new ways to solve never-ending business challenges by adopting new technologies, even when there isn't yet a best practice. If you share our passion for problem-solving and making an impact, join us and enjoy getting to know our wealth of experience!

About the position

Quantum is expanding its team in Central Europe and is looking for talented Data Science Engineers to join us. Our projects span multiple domains, including data analysis, fintech, computer vision, image processing, edge-device solutions, Large Language Models (LLMs), and classical Machine Learning applications. We build custom Data Science solutions for clients across various industries, combining strong engineering practices with a research-driven mindset.

Joining Quantum means becoming part of a team that values solid technical fundamentals, continuous learning, and practical problem-solving. You'll collaborate on impactful products, work with cutting-edge technologies, and contribute to projects that turn complex ideas into real-world solutions.

Must have skills:

• 3+ years of commercial DS/ML experience
• Solid foundation in linear algebra, statistics, and probability
• Strong Python, including NumPy, Pandas, and scikit-learn
• Hands-on experience with PyTorch (or TensorFlow)
• Deep experience in at least one of: 
  • Computer Vision (modern DL: detection, segmentation, classification - ViT, YOLO, SAM); 
  • LLMs / NLP (fine-tuning, RAG, prompt engineering, embeddings, evaluation); 
  • Classical ML at scale (tabular, time series, recommender systems)
• Working knowledge of Transformers and attention; familiarity with CNNs
• Experience deploying models to production (Docker, REST/gRPC serving, basic monitoring)
• Experience with at least one cloud platform (AWS, GCP, or Azure)
• Clean code and Git workflow
• Experience with SQL
• Upper-Intermediate English (B2+) - you'll communicate directly with clients

Nice to have skills:

• Cross-domain exposure: if your main strength is CV, some LLM exposure is a plus (and vice versa)
• Edge deployment: TensorRT, OpenVINO, ONNX, quantisation, model distillation, mobile/embedded inference
• LLM tooling: LangChain/LlamaIndex, vector databases (pgvector, Pinecone, Weaviate, Qdrant), LoRA/QLoRA fine-tuning, agentic frameworks
• MLOps & model monitoring: MLflow, DVC, Weights & Biases, CI/CD for ML
• Classical CV with OpenCV (still relevant for hybrid pipelines and edge work)
• Ability to read recent papers and implement methods in new domains
• Experience working with external clients
• Participation in Kaggle competitions

Your tasks will include:

• Own full-cycle DS projects: scoping with the client, data prep, modelling, evaluation, deployment
• Build solutions across CV, LLM/NLP, and classical ML depending on the project pipeline
• Deploy models to production - cloud, edge, or hybrid, depending on client needs
• Read recent research and adapt methods to client problems
• Communicate technical decisions and trade-offs directly to clients

We offer:

• Delivering high-end software projects that address real-world problems
• Surrounding experts who are ready to move forward professionally
• Professional growth plan and team leader support
• Taking ownership of R&D and socially significant projects
• Participation in worldwide tech conferences and competitions
• Taking part in regular educational activities
• Being a part of a multicultural company with a fun and lighthearted atmosphere
• Working from anywhere with flexible working hours
• Paid vacation and sick leave days

Join Quantum and take a step toward your data-driven future.

We’re looking for an experienced Performance Marketing Lead to take ownership of one of our fastest-growing performance marketing initiatives.

You’ll lead the development and scaling of our Native Advertising capabilities across Taboola, Microsoft Ads, LiveIntent, and Newsbreak, working alongside Creative, CRO, and Analytics teams to build a high-performing media buying organization.

This isn’t a role for someone who simply wants to manage campaigns.

It’s an opportunity to build a platform.

You’ll initially lead a team of three Media Buyers while helping us recruit and develop additional specialists. As the business grows, you’ll play a key role in shaping the future of our Native Advertising organization, with a clear opportunity to grow into Head of Native Pod.

If you’re passionate about experimentation, building teams, and solving difficult performance marketing challenges at scale, we’d love to talk.

Key Responsibilities:

Lead the Native Advertising Function

• Own the overall performance and strategic direction of our Native Advertising channels, including Taboola, Microsoft Ads Native, LiveIntent, and Newsbreak.
• Develop platform-specific strategies that support sustainable client growth while maintaining profitability and operational efficiency.
• Continuously identify new opportunities to improve campaign performance, testing velocity, and scalability.

Build and Develop a High-Performing Team

• Lead, mentor, and support an initial team of three Media Buyers.
• Recruit and onboard additional Media Buyers as the team expands.
• Create an environment focused on accountability, collaboration, continuous learning, and high performance.
• Provide regular coaching, campaign reviews, and performance feedback to help team members grow professionally.

Drive Performance Excellence

• Ensure campaigns are executed and optimized according to clearly defined performance standards.
• Monitor key business metrics, including lead volume and quality, cost efficiency, and profitability.
• Support Media Buyers in identifying scaling opportunities, troubleshooting performance issues, and making data-driven optimization decisions.
• Maintain a strong understanding of platform updates, industry trends, and competitive activity.

Own Testing Strategy

• Develop structured testing frameworks across targeting, bidding, placements, creatives, and campaign optimization.
• Promote a culture of experimentation where decisions are driven by data rather than assumptions.
• Ensure testing results are documented, shared, and incorporated into operational best practices.

Collaborate Across Functions

• Partner closely with Design, CRO, Analytics, and Operations teams to improve campaign quality and execution speed.
• Translate business objectives into clear testing priorities and cross-functional initiatives.
• Help improve workflows that enable faster experimentation and more efficient campaign launches.

Build Scalable Systems

• Establish platform standards, documentation, playbooks, and operational processes that enable consistent execution across the team.
• Identify operational bottlenecks and implement solutions that improve quality, efficiency, and scalability.
• Contribute to the long-term development of our performance marketing organization by continuously improving how the team operates.

Required

• 7+ years of hands-on experience in Performance Marketing or Media Buying.
• Previous experience managing, mentoring, or leading Media Buyers.
• Experience with one or more Native Advertising platforms, including Taboola, Outbrain, Microsoft Ads, LiveIntent, Newsbreak, MGID, or MediaGo.
• Experience managing campaigns targeting North American markets.
• Strong analytical skills and a data-driven approach to decision making.
• Proven experience optimizing campaigns at scale.
• Excellent communication and organizational skills.
• Fluent English.

Preferred

• Experience in lead generation and performance marketing.
• Experience working in agency or high-growth performance marketing environments.
• Familiarity with AI-powered marketing tools and workflow automation.

Numerical Technologies LTD is a provider of custom software solutions and services specializing in risk, limits, and regulatory capital. We are currently looking for a Senior Full Stack Developer to join our team.

Project: Modernization of the analytics and reporting platform, moving legacy applications to a responsive, cloud-aware architecture, replacing ad-hoc spreadsheets with auditable services, and building the data and tooling layer that supports the firm’s various lines of business.

What you will be doing:

As part of the team, you will join a client project focused on the modernization of a mission-critical analytics and reporting platform supporting credit, private credit, structured products, and CLO businesses. As part of a collaborative, cross-functional team, you will help design, build, and support the next generation of applications and services that enable investment decision-making, risk management, operations, and investor reporting. Working across the full technology stack, you will partner closely with portfolio managers, analysts, risk, operations, investor relations, and technology teams to deliver scalable, high-impact solutions. AI-powered development tools are integrated into the team's daily workflow, helping accelerate delivery while maintaining high standards of quality and ownership

What we are looking for:

• 5+ years of professional software engineering experience.
• Strong expertise in Python.
• Experience designing and developing RESTful APIs, microservices, and asynchronous integrations.
• Strong understanding of software architecture, design patterns, and scalable application development.
• Experience with React, JavaScript/TypeScript, HTML5, CSS.
• Deep understanding of responsive web design and modern UI development principles.
• Strong SQL expertise, including query optimization, performance tuning, and window functions.
• Experience with relational databases and data modeling.
• Experience deploying and supporting applications in Microsoft Azure and/or Amazon Web Services (AWS).
• Ability to leverage AI tools to improve productivity, accelerate delivery, and enhance code quality.
• Upper-Intermediate English proficiency or higher.
• Bachelor’s degree or higher.

What will be a plus:

• Experience within financial services, capital markets, investment management, hedge funds, banking, or fintech environments is strongly preferred.
• Exposure to NoSQL/document databases is a plus.
• Experience with SQL Server Reporting Services (SSRS) is advantageous.
• Experience developing Tableau dashboards.

What we offer:

• Competitive compensation depending on experience and skills.
• Regular performance assessments and salary reviews.
• Paid personal days.
• Mental health support program.
• Language classes.
• Flexible working schedule.

Numerical Technologies LTD is a provider of custom software solutions and services specializing in risk, limits, and regulatory capital. We are currently looking for a Senior Full Stack Developer to join our team.

Project: Modernization of the analytics and reporting platform, moving legacy applications to a responsive, cloud-aware architecture, replacing ad-hoc spreadsheets with auditable services, and building the data and tooling layer that supports the firm’s various lines of business.

What you will be doing:

As part of the team, you will join a client project focused on the modernization of a mission-critical analytics and reporting platform supporting credit, private credit, structured products, and CLO businesses. As part of a collaborative, cross-functional team, you will help design, build, and support the next generation of applications and services that enable investment decision-making, risk management, operations, and investor reporting. Working across the full technology stack, you will partner closely with portfolio managers, analysts, risk, operations, investor relations, and technology teams to deliver scalable, high-impact solutions. AI-powered development tools are integrated into the team's daily workflow, helping accelerate delivery while maintaining high standards of quality and ownership

What we are looking for:

• 5+ years of professional software engineering experience.
• Strong expertise in .NET / C#.
• Experience with React, JavaScript/TypeScript, HTML5, CSS.
• Experience designing and developing RESTful APIs, microservices, and asynchronous integrations.
• Strong understanding of software architecture, design patterns, and scalable application development.
• Deep understanding of responsive web design and modern UI development principles.
• Strong SQL expertise, including query optimization, performance tuning, and window functions.
• Experience with relational databases and data modeling.
• Experience deploying and supporting applications in Microsoft Azure and/or Amazon Web Services (AWS).
• Ability to leverage AI tools to improve productivity, accelerate delivery, and enhance code quality.
• Upper-Intermediate English proficiency or higher.
• Bachelor’s degree or higher.

What will be a plus:

• Experience within financial services, capital markets, investment management, hedge funds, banking, or fintech environments is strongly preferred.
• Exposure to NoSQL/document databases is a plus.
• Experience with SQL Server Reporting Services (SSRS) is advantageous.
• Experience developing Tableau dashboards.

What we offer:

• Competitive compensation depending on experience and skills.
• Regular performance assessments and salary reviews.
• Paid personal days.
• Mental health support program.
• Language classes.
• Flexible working schedule.

About the Project

We are looking for a Data Analyst to join an international project focused on large-scale data aggregation and operational support. This role combines data analysis with operational responsibilities, offering an opportunity to work closely with both internal teams and the client.

Responsibilities

• Analyze large datasets and provide actionable insights.
• Validate business hypotheses and support data-driven decision-making.
• Write, optimize, and maintain SQL queries.
• Investigate client-reported issues and perform data validation.
• Conduct root cause analysis and assist in resolving operational incidents.
• Support day-to-day operational processes and client requests.
• Collaborate with cross-functional teams and stakeholders.

Requirements

• Solid knowledge of SQL, Python, and Excel.
• Strong self-management and ability to work autonomously.
• Experience working in distributed or remote teams.
• Ability to operate effectively in a dynamic, operational environment.

• Flexibility to occasionally support business needs outside standard working hours.

   

Working Conditions

• Working schedule: Sunday–Thursday (Ukraine time zone).
• Strong focus on information security and data confidentiality.

Hiring process

1. HR interview
2. Logic assissment
3. Python assissment 
4. Technical interview
5. Client interview