Jobs

We are expanding the delivery team and hiring a Product Owner for a large-scale energy project that is already in the active delivery phase. This is not a greenfield or discovery-only role. The project is live, complex, and business-critical, and its results will directly influence the future of the Ukrainian energy sector, including its digital and green energy transformation.

If you enjoy working close to delivery, stakeholders, and сlients - this role is for you.

Responsibilities:

• Liaise with stakeholders and perform ongoing prioritization, publishing and refinement of the overall backlog in a project team and according to the project scope of deliverables;
• Analysis and solution design with the team to transform scope into sprint backlogs;
• Lead planning and the breakdown of the backlog into items, providing their definitions, acceptance criteria and estimates.
• Collaboratively develop, present the functionality and collect feedback from end customers;
• Report and escalate on the use of budget and expected due dates;
• Document functional solutions designs and prepare delivery documentation.

Required skills:

• 5+ years of proven experience as a product owner working in IT;
• At least one enterprise project delivered end-to-end;
• Knowledge of Agile frameworks;
• Strong organizational and leadership abilities;
• Analytical thinking and problem-solving;
• Requirements engineering;
• Excellent soft skills;
• Mandatory: Ukrainian - native; English -Upper Intermediate 
• BSc/BA Bachelor’s Degree in Computer Science, Engineering or related for understanding of product solution architecture.

The big advantage will be:

• Previous experience with customer management, billing, and financial solutions;
• Previous revenue management with one of the following industries – energy, utility, telсo.

Working with MaxBill you will get:

• 20 working days of annual leave per year, plus paid public holidays.
• Sick/personal leave provision.
• Paid training, conferences, workshops, and certification courses, English classes.
• The possibility of remote work and a flexible schedule.

We are constantly growing and now looking for DB Internals & Query Execution Specialist (C++/Java) deep expertise in database engine internals, query planning, and execution architecture to join Mixed Remote Development Team collaborating with a top storage company based in Tel Aviv with investors such as Dell Capital and NVIDIA. The role involves developing (C++/Java) and optimizing core components of a SQL or analytical database engine with a strong focus on performance, concurrency, and resource efficiency.

Requirements:

• Expertise in database core development, including storage engines, query planners, execution engines, and transaction processing.
• Strong understanding of storage engines: row vs column layouts, heap files, LSM trees, B-Trees
• Experience with index structures: B-trees, LSM indexes, hash and inverted indexes
• Knowledge of buffer pool and cache management mechanisms
• Solid grasp of transactions and concurrency: MVCC, locking, isolation levels
• Familiarity with durability and recovery: WAL, replication, crash recovery
• Understanding of low-level performance factors: memory layout, disk I/O, CPU cache behavior
• English, sufficient for interviews and participation in meetings (B2)
•  

We offer:

• Remote work, mixed international team, cutting-edge technologies, and flexible working hours.
• The project that you are not ashamed to write about in your resume.
• High salaries and bonuses.
• Business trips to Israel (beach hotel, rented car).
• A friendly team with experienced mentors instead of bosses.

About the Company
 

Digis is a European IT company with 200+ specialists delivering high-load SaaS platforms, enterprise solutions, and cloud-native products for clients worldwide. We build long-term engineering teams and ensure transparency, stability, and professional growth for every talent.
 

About the Client & Project

You will join a fast-growing logistics technology platform focused on automating freight operations and digital document exchange between carriers, brokers, and shippers. The system is designed to process high volumes of structured business documents, integrate with multiple external partners, and ensure reliable, real-time data exchange across the supply chain ecosystem.

You will be involved in developing and scaling a modern EDI platform, enhancing integrations, and improving system performance and reliability.
 

Tech Stack

Backend: C#, .NET Core, ASP.NET Core
Integration: EDI (X12, EDIFACT), REST APIs
Data & Messaging: SQL Server, RabbitMQ / Azure Service Bus
 

Requirements

• 5+ years of experience with .NET (C#)
• 3+ years with ASP.NET Core
• 1+ year of experience with EDI 
• English level: Upper-Intermediate+
   

Responsibilities

• Design and develop backend services for EDI processing and integrations
• Build and maintain APIs for external partner communication
• Work with structured data formats (X12, EDIFACT, JSON, XML)
• Improve system scalability and reliability
• Collaborate with CTO, Product Manager, and engineering team
• Participate in code reviews and technical discussions
   

Why this project is exciting

• Work on a high-load platform in the logistics domain with real business impact
• Opportunity to build and scale a modern EDI ecosystem
• Direct collaboration with experienced CTO and Product team
• Long-term project with stable roadmap and continuous growth
   

We offer:

• Paid 20 vacation days per year
• Paid 5 sick leaves per year with no medical documents needed
• Personalized development plan and career growth support
• Compensation for professional trainings
• Work equipment and home office setup support
• English courses compensation
• Transparent and horizontal communication
• Accounting support
• Free corporate psychologist services

Our client is a global integrated Shipping Services company, recognized for its independent and innovative approach. As a niche carrier, they operate select trades where they provide superior service, ensuring stability, reliability, and flexibility for their customers worldwide. By maintaining strategic partnerships with major carriers and offering alternative line structures, they stand out in a market dominated by alliances.
We are seeking a Senior Java Full Stack Engineer to join our dynamic development team. This is a hands-on role involving the full development cycle—from design and architecture to development and deployment—with a focus on innovative applications. You will work in an XP environment, collaborating remotely with pairing practices to deliver high-quality solutions.

Responsibilities:

• Full stack development of innovative applications using Java, Spring, and React.
• Own the entire development lifecycle, including design, architecture, development, and DevOps.
• Work in an XP environment with remote pairing.
• Develop reactive UIs and modern front-end experiences.
• Implement and maintain microservices-based architectures.
• Contribute to TDD/BDD development using frameworks such as JUnit, Jasmine, Mockito, Protractor/Selenium.
• Deploy and manage cloud/hybrid solutions and containerized applications (Kubernetes, Cloud Foundry).
• Apply design principles like service discovery, circuit breakers, and scalable microservices.
• Switch effectively between different technologies and tasks in a fast-paced environment.

Requirements:

• BS degree in Computer Science or equivalent experience.
• 5–6+ years of full stack development experience.
• 5–6+ years of Java and Spring development; experience with Kotlin is an advantage.
• 2+ years of front-end development with React (or other modern JS frameworks).
• Experience with functional programming and Java Streams.
• 2+ years of experience in TDD/BDD using JUnit, Jasmine, Mockito, Protractor/Selenium.
• 2+ years of experience with microservices, Spring Boot/Cloud, and DevOps practices including Jenkins.
• Experience designing, developing, and deploying cloud/hybrid-based solutions.
• Experience with container-based environments (Kubernetes, Cloud Foundry).
• Familiarity with modern design patterns and architecture principles: microservices, service discovery, circuit breaker.
• Strong problem-solving skills, critical thinking, and ability to assess a broad range of information solutions.
• Excellent English communication skills (verbal and written).

Nice-to-Have:

• Experience in Kotlin development.
• Experience in developing reactive UIs (Reactive JS).

We offer*:

• Flexible working format - remote, office-based or flexible
• A competitive salary and good compensation package
• Personalized career growth
• Professional development tools (mentorship program, tech talks and trainings, centers of excellence, and more)
• Active tech communities with regular knowledge sharing
• Education reimbursement
• Memorable anniversary presents
• Corporate events and team buildings
• Other location-specific benefits

*not applicable for freelancers

Onicore is a FinTech company specializing in developing products for cryptocurrency operations. We strive to make crypto convenient and understandable for everyone.
 
And now we are looking for a talented and experienced Java Team Lead to join our team. If you’re passionate about working with the latest technologies, contributing to exciting product developments, and collaborating with an awesome team, we want to hear from you!
 
Your Key Duties:

• Design, develop, and maintain high-performance, scalable Java-based applications in the FinTech domain.
• Implement and optimize multithreaded and concurrent solutions, ensuring thread safety and system reliability.
• Build and maintain microservices using the Spring ecosystem.
• Ensure database efficiency, including query optimization, proper indexing, and transaction handling.
• Evaluate and improve application performance, conduct profiling sessions, and resolve bottlenecks.
• Design and implement synchronous and asynchronous integrations with internal and external systems.
• Participate in architectural discussions, propose improvements, and drive technical initiatives.
• Collaborate closely with product managers, architects, and QA engineers to deliver business-critical solutions.
• Write clean, maintainable, and well-tested code following best practices.
   

Your Skills:

• 5+ years of professional experience in Java development.
• Strong expertise in Java 17+ (knowledge of modern language features, streams, lambdas, functional programming concepts).
• Deep understanding of core Java:
• Collections Framework, Generics, Streams, Functional Interfaces
• Concurrency utilities (Executors, CompletableFuture, Fork/Join, Locks, Atomics, etc.)
• Proven experience with the Spring ecosystem: Spring Boot, Spring Data (JPA/Hibernate), Spring Security, Spring Cloud (microservices).
• Solid understanding of databases (SQL and/or NoSQL), including:
• Transactions, isolation levels, and locking mechanisms
• Query optimization and indexing strategies
• Hands-on experience with multithreading and concurrency, including race conditions, deadlocks, synchronization, and strategies to avoid them.
• Proficiency in synchronous and asynchronous communication: REST, messaging systems (Kafka, RabbitMQ, etc.), event-driven architectures.
• Experience working on FinTech or financial services projects.
• Strong focus on performance evaluation, scalability, and reliability.
• Strong problem-solving skills, ability to work independently, take initiative, and drive solutions proactively.
• Self-driven and responsible, capable of working with minimal supervision.
• Proactive, solution-oriented mindset.
• Team player with a collaborative attitude.
   

Nice to have:

• Experience with Kubernetes, Docker, and cloud-native environments.
• Experience with application profiling and performance tuning:
• Tools such as VisualVM, JFR (Java Flight Recorder), JMC (Java Mission Control)
• Identifying and resolving performance bottlenecks
• Analyzing complexity of SQL queries and optimizing execution plans
• Familiarity with CI/CD pipelines and DevOps practices.
• Knowledge of distributed systems, event sourcing, or CQRS.
   

What’s on us:

— Competitive salary and benefits package.

— Opportunities for professional development and career growth.

— Health insurance.

— Remote work with the possibility to visit our office in Kyiv.

— Space to share your ideas and bring them to life.

Is this all about you? Send us your CV!

The family-style company is looking for a talented .NET Developer to join our team. If you are looking for an awesome team, send us your CV!

The Project

You will join a project for a large, well-known company in the insurance sector, working on a B2B corporate SaaS solution. The platform serves a wide user base and is deployed on Kubernetes in Azure.

Your primary focus will be on application development: building new features, improving existing functionality, and contributing to the evolution of a scalable product.

Tech Stack:

• Backend: C#, ASP.NET Core
• Frontend: Angular
• Database: PostgreSQL
• Infrastructure: Kubernetes, Microsoft Azure

• Other: REST APIs, SaaS architecture

   

Nice to have:

• Rust

• Experience with geospatial data and related libraries

   

What You'll Do

• Develop and maintain full-stack features using ASP.NET Core, Angular, and PostgreSQL
• Extend and improve the SaaS platform based on the product backlog
• Collaborate closely with the team and client in English
• Take ownership of tasks and contribute to technical decisions

• Share ideas and continuously improve both the product and development process

   

What We're Looking For

• Experience with (or strong willingness to learn) ASP.NET Core, Angular, C#, and PostgreSQL
• Understanding of modern web application development practices
• Proactive mindset - curiosity, ownership, and eagerness to learn
• Ability to work independently while being a strong team player
• Good communication skills in English (day-to-day project language)

What we offer

• Sane and polite, but effective management
• The best corporate culture (according to our teammates' opinions)
• Competitive salary and other stuff
• Remote work, full time

• Becoming not just another developer, but a part of UKAD with unique value and long-term relationships.

   

Some facts about UKAD to help you make a decision:

During 2022-2025, we only increased cooperation with our foreign partners

UKAD combines benefits of family-sized companies, like no bureaucracy, easy access to the executives, with sustainable growth and vast opportunities

Our company is strong enough to be not just a vendor but a tech partner. We can afford to choose customers that respect developers

UKAD is one of the leading employers in Kharkiv, according to DOU

We never hire people for projects, but to build the team, so if the project ends, you remain a part of UKAD.

Aren't we the company you're looking for?

Technical skills needed:

• 4+ years of experience in a role Business or System or Functional Analyst;
• Proficient in writing User Stories, Use Cases, Functional and Non-Functional requirements, system diagrams, wireframes;
• Experience of working with Restful APIs (writing requirements, API usage);
• Experience in Microservices architecture;
• Experience of working with Agile methodologies (Scrum, Kanban);
• Solid knowledge in DB and SQL;
• Knowledge of UML, BPMN;
• Understanding of key UX/UI practices and processes;
• Understanding of software development lifecycle;
• Understanding of architecture of WEB-based application;
• English Upper-Intermediate or higher.

Soft Skills:

• Excellent communication and presentation skills;
• Proactiveness;
• Organized, detail-oriented with ability to keep overall solution in mind;
• Comfort working in a fast-paced environment, running concurrent projects and manage BA work with multiple stakeholders;
• Good time-management skills, ability to handle multitasking activities.

As a plus

• Experience in writing requirements for reporting system, dashboards, DWH, ETL, etc
• Experience in enterprise software development or finance domain;
• Experience in delivery of desktop and web-applications;
• Experience of successful system integration project.

Responsibilities:

• Participation in discovery phases and workshops with Customer, covering key business and product requirements;
• Manage project scope, requirements management and their impact on existing requirements, defining dependencies on other teams;
• Creating business requirements, user stories, mockups, functional specifications and technical requirements (incl. flow diagrams, data mappings, examples);
• Close collaboration with development team (requirements presentation, backlog grooming, requirements change management, technical solution design together with Tech Lead, etc.);
• Regular communication with internal (Product, Account management, Business teams) and external stakeholders (Partners, Customers); 
• Preparing UAT scenarios, validation cases;
• User Acceptance Testing;
• Demo for internal stakeholders;
• Creating documentation (user guides, technical guides, presentations).
   

Project Description:

Wireless Standard POS (Point-Of-Sales) (www.b2bsoft.com) is our retail management solution for the Telecom Market.

It provides thousands of retailers with features and functionalities they need to run their businesses effectively with full visibility and control into every aspect of sales and operations. 

It is simple to learn, easy to use and as operation grows, more features can be added on.

Our system can optimize and simplify all processes related to retail in this business area. 
 

Few things that our product can do:

• Robust Online Reporting
• Repair Management Software
• 3rd Party Integrations
• Customer Connect Marketing
• Time and Attendance
• Carrier Commission Reconciliation

 As a Business Analyst/ System Analyst, you will be the liaison between the lines of business and the Development team, have the opportunity to work on a very complex product with microservice architecture (50+ for now) and communicate with Product, QA, Developers, Architecture and Customer Support teams to help improve product quality.
 

We are looking for a C++ Developer to build and optimize high-performance, low-latency systems for large-scale financial platforms.

The company is a product fintech organization working with leading banks and investment funds, founded in 2011. It specializes in building low-latency financial systems for key players in the global market. The company combines stability with continuous growth, actively launching new projects and expanding its technology landscape.

Responsibilities:

- Own and maintain a specific module or domain
- Support other modules when needed, ensuring overall system stability
- Participate in the full development cycle: from requirements to design, implementation, and testing

Requirements:

- Experience in server-side development using C++ (Linux)

- Multithreading 

- Experience with large-scale systems (not small applications)

- Spoken English

Nice to Have:

- Experience with high-load systems 

- Experience in the financial industry

What they offer:

- Fully remote work

- 15 days of annual leave + public holidays

- 10 sick days 

- Medical insurance

- Company-provided equipment

Ajax Systems is a full-cycle company working from idea generation and R&D to mass production and sales. We create security solutions for residential and commercial properties, with a portfolio of 280+ devices across intrusion protection, video surveillance, fire safety, and automation. The whole team is in one office in Lviv, all technical and product decisions are made locally.

We’re looking for an Java Developer to join us and continue the evolution of a product that we love: someone who takes pride in their work to ensure that user experience and development quality are superb. You will be able to develop the apps in the best hardware company of Ukraine with around 300M active users around the world. Moreover, very soon you will have a chance to start several new products from scratch.

Required skills:

• 5+ years of commercial experience in backend development with Java in an enterprise environment;
• Strong understanding of Java Concurrency and hands-on experience with concurrent programming in production systems;
• Solid understanding of SOA, microservices, and event-driven architecture;
• Practical experience with cloud computing platforms;
• Experience building and supporting high-load, scalable, and highly available systems;
• Hands-on experience with messaging brokers;
• Strong understanding of modern backend infrastructure, NoSQL, key-value databases, and in-memory storage solutions;
• Practical experience with Docker or Kubernetes;
• Experience with Git, Gradle or othet CI/CD tools;
• Strong knowledge of unit testing and automated testing approaches.

Would be a plus:

• Experience with some of technologies: Redis, Netty, Akka, NATS, AWS, MQTT, Kafka, MongoDB, gRPC.
• Practical experience with Kotlin.

What you will do:

• Design and develop core backend services and data pipelines for the product line;
• Build clean, maintainable, and production-ready code with a strong focus on quality;
• Contribute to backend architecture, drive technical decisions, and document solutions for reliable deployment and operations;
• Ensure proper test coverage with unit and integration tests;
• Take ownership of performance, scalability, and cost efficiency within your domain;
• Maintain production reliability through monitoring, alerting, dashboards, and runbooks;
• Investigate and resolve production issues, including deep-dive analysis of complex cases;
• Work in a strong engineering culture with testing, continuous delivery, and DevOps practices;
• Collaborate closely with product and engineering teams to deliver new features and improve existing services.

Why this role is interesting:

• Opportunity to work on high-load backend systems and distributed architecture;
• Real impact on core product development and architectural decisions;
• Modern technology stack and engineering-driven environment;
• Close collaboration with experienced engineers in a culture that values quality, ownership, and technical excellence;
• Challenging tasks where performance, reliability, and scalability truly matter.

We offer:

• The opportunity to share and implement your own ideas that could impact products and production;
• Work with a motivated team and an environment with a zero-bullshit culture;
• Competitive salary;
• Medical insurance;
• Corporate English classes;
• Compensation for professional training;
• The chance to take part in beta testing of Ajax security systems — receive and test new devices before their release.

Ajax Systems is a Ukrainian success story, a place of incredible strength and energy.
Join us in making Made in Ukraine 🇺🇦 synonymous with reliability.

What is your Day to Day Mission:

• Design, develop, and optimize real-time object detection and tracking models for aerial video from UAVs (EO/IR cameras)
• Implement inference pipelines optimized for edge hardware (e.g., NVIDIA Jetson, Orin)
• Conduct model training, testing, benchmarking, and validation in real flight environments
• Integrate AI models into onboard systems
• Collaborate with other software and hardware teams to ensure robust end-to-end performance

• Research and apply state-of-the-art deep learning methods in computer vision

   

What you bring to the team:

• 3+ years of experience in AI/ML, with a strong focus on computer vision
• Proven experience in object detection/tracking using models like YOLO, SSD, or custom CNNs
• Proficiency in Python, C++, PyTorch or TensorFlow
• Experience with real-time video processing and optimization techniques (e.g., TensorRT, ONNX, pruning, quantization)
• Solid understanding of data annotation, augmentation, and training workflows
• Familiarity with embedded/edge AI deployments (e.g., Jetson Xavier, Orin)
• Experience working with aerial/surveillance imagery or geospatial data is a strong plus

• Bachelor’s or Master’s degree in Computer Science, Robotics, or related field

   

Nice to Have:

• Knowledge of GStreamer, OpenCV, or similar real-time streaming frameworks
• Familiarity with UAVs, drone flight control, or defense technologies

• Understanding of object re-identification or multi-target tracking

   

Why Quantum-Systems:

• We Stand with Ukraine!
• We believe in the power of combined efforts: straightforward tech expertise paired with a customer-centric focus.
• We are industry pioneers who are ambitious, bold, and visionary.
• We push limits, think outside the box, and strive for technological excellence to shape the future of aerial data.

• We promise to be your runway for individual and professional growth.

   

About us:

Quantum Systems specialises in the development, design, and production of small Unmanned Aerial Systems (sUAS). The company’s range of electric vertical take-off and landing (eVTOL) sUAS are built to maximize range and versatility and to provide operators with a seamless user experience. By integrating cutting-edge software capabilities, like edge computing and real-time AI-powered data processing, Quantum Systems is building next-generation UAS for clients in defence, security, public sectors.

The family-style company is looking for a talented .NET Developer to join our team. If you are looking for an awesome team, send us your CV!

The Project

You will join a project for a large, well-known company in the insurance sector, working on a B2B corporate SaaS solution. The platform serves a wide user base and is deployed on Kubernetes in Azure.

Your primary focus will be on application development: building new features, improving existing functionality, and contributing to the evolution of a scalable product.

Tech Stack:

• Backend: C#, ASP.NET Core
• Frontend: Angular
• Database: PostgreSQL
• Infrastructure: Kubernetes, Microsoft Azure
• Other: REST APIs, SaaS architecture

Nice to have:

• Rust
• Experience with geospatial data and related libraries
   

What You'll Do
 

• Develop and maintain full-stack features using ASP.NET Core, Angular, and PostgreSQL
• Extend and improve the SaaS platform based on the product backlog
• Collaborate closely with the team and client in English
• Take ownership of tasks and contribute to technical decisions
• Share ideas and continuously improve both the product and development process
   

What We're Looking For
 

• Experience with (or strong willingness to learn) ASP.NET Core, Angular, C#, and PostgreSQL
• Understanding of modern web application development practices
• Proactive mindset - curiosity, ownership, and eagerness to learn
• Ability to work independently while being a strong team player
• Good communication skills in English (day-to-day project language)

What we offer
 

• Sane and polite, but effective management
• The best corporate culture (according to our teammates' opinions)
• Competitive salary and other stuff
• Remote work, full time
• Becoming not just another developer, but a part of UKAD with unique value and long-term relationships.
   

Some facts about UKAD to help you make a decision
 

During 2022-2025, we only increased cooperation with our foreign partners.

UKAD combines benefits of family-sized companies, like no bureaucracy, easy access to the executives, with sustainable growth and vast opportunities.

Our company is strong enough to be not just a vendor but a tech partner. We can afford to choose customers that respect developers

UKAD is one of the leading employers in Kharkiv, according to DOU.

We never hire people for projects, but to build the team, so if the project ends, you remain a part of UKAD.
 

Aren't we the company you're looking for?

We’re building next-generation payment infrastructure for high-volume, high-risk merchants - fast, intelligent, and built for scale.
As our Lead Payments Engineer, you’ll own the architecture behind mission-critical payment flows, deep processor integrations, and the systems that power merchant success.

Your mission is to design, scale, and evolve a payment ecosystem that can outperform legacy processors in both speed and intelligence.
You’ll lead the development of our gateway integrations (with a major focus on RocketGate), build merchant-facing dashboards, and create resilient systems that handle disputes, fraud controls, and high-volume settlement pipelines - all while shaping the engineering culture of a rapidly growing fintech startup.

What You’ll Do

• Lead the architecture and development of advanced payment processing systems and APIs
• Integrate multiple acquirers, processors, and alternative payment methods
• Build merchant dashboards, reporting tools, and real-time monitoring systems
• Implement fraud, dispute, and chargeback workflows (VAMP, TC40, CE3.0, Ethoca, RDR)
• Ensure PCI DSS compliance and best-in-class data security
• Design high-availability, high-throughput backend systems built for scale
• Define and own the technical roadmap
• Mentor and grow an engineering team focused on speed, precision, and accountability
• Collaborate with operations, compliance, and commercial teams to deliver features merchants rely on
   

You’re a Strong Fit If

• You bring deep experience in payments — especially card-not-present and high-risk environments
• You’ve built or scaled transactional systems handling heavy throughput
• You naturally take ownership and thrive in fast, high-trust environments
• You communicate clearly, think strategically, and enjoy solving complex system challenges
• You enjoy leading teams while staying hands-on with architecture and development

Required Skills

• Payments Expertise (MUST):
  Deep understanding of acquiring, gateway architecture, CNP payments, and high-risk processing
• Backend Engineering (MUST):
  Strong proficiency in PHP/Laravel and modern backend patterns
• Integrations:
  Proven experience integrating processors, acquirers, and risk tooling
• Security:
  Solid knowledge of PCI DSS, tokenization, encryption, and secure coding practices
• Scalability:
  Experience designing high-availability, high-volume systems
• Leadership:
  Track record of managing engineering teams and owning technical strategy

Nice to Have

• Crypto payment processing experience
• Machine-learning or rules-based fraud detection systems
• Exposure to offshore acquiring and multi-geo merchant onboarding
• Experience in ISO/MSP environments

With Us You’ll Have

 • Fully remote setup with a flexible schedule

• Fast-moving environment where decisions are quick and clear
• Direct collaboration with founders & tech leadership — your work has real impact
• Competitive compensation based on experience
• A team that values ownership, clarity, and healthy communication

About the Mission

We are building an AI-driven payments ecosystem designed to transform a $50B industry still dominated by slow, legacy processors. As Head of ISO, your mission is to architect, lead, and scale our merchant acquisition engine. You will set the commercial direction, build high-performing processes, and drive measurable revenue impact - first through hands-on execution, and then by leading automated, scalable systems you help define.

What You’ll Do

• Architect and launch the ISO function end-to-end: strategy, operating model, tooling, and execution;
• Own the full merchant pipeline: prospecting → qualification → underwriting coordination → negotiation → closing → onboarding/activation;
• Define and refine commercial fundamentals: pricing strategy, merchant segmentation, and offer frameworks aligned with risk and margins;
• Build scalable operational workflows and enforce portfolio health ratios (chargebacks, fraud, dispute rates), in close coordination with Risk/Compliance and Processing partners;
• Map and manage banking/acquiring coverage (“bank mapping”) and route merchants to the right partners based on vertical, geography, and risk profile;
• Build and maintain relationships with PSPs, acquirers, and key commercial partners to unlock approvals, improve conversion, and expand capacity;
• Standardize playbooks, scripts, and governance, ensuring every opportunity is tracked, advanced, and optimized for conversion;
• Drive process automation with Product & Engineering: convert manual tasks into AI-powered workflows across outreach, qualification, CRM hygiene, and reporting;
• Recruit, develop, and lead the ISO team, creating a high-performance culture centered on consistency, accountability, and results;
• Deliver advanced reporting, forecasting, and KPIs to leadership; act as a senior commercial partner shaping revenue strategy and growth targets.

You’re a Strong Fit If

• You’ve built or scaled an ISO/merchant services function and know what “from zero to repeatable engine” looks like;
• You have strong domain understanding of underwriting, processing economics, risk, and portfolio management;
• You are equally comfortable leading and executing - entrepreneurial, hands-on, and operationally rigorous;
• You thrive in fast-changing environments, build structure quickly, and drive predictable outcomes at scale;
• You operate with urgency, handle high-stakes initiatives, and take full ownership of results.

Required Skills

• Extensive experience in ISO / merchant services / payment processing, ideally with proven ISO build/launch exposure;
• Track record of closing complex merchant deals and managing merchant portfolios with strong risk awareness;
• Ability to define pricing/segmentation and align commercial execution with underwriting and partner constraints;
• Strong operational discipline: scalable workflows, CRM governance, forecasting, and KPI-driven management;
• Excellent communication, negotiation, and relationship management; leadership maturity and resilience.

Nice-to-Have

• Experience in fintech, SaaS, or payment technology environments;
• Familiarity with CRM systems, outbound engines, or automation workflows;
• Background in building or managing distributed commercial teams.

Why This Role Matters

• Shape the commercial backbone of a fast-moving, high-impact payments ecosystem.
• Direct access to founders and leadership, with zero bureaucracy and high decision velocity.
• Full ownership and autonomy: you build the system, the team, and the results from scratch.
• Competitive compensation with significant performance-based upside.
• A rare opportunity to lead innovation in one of the most lucrative and underserved segments of fintech.

🌟 About SelfInspection

SelfInspection is a fast-growing AI-driven vehicle inspection platform transforming how leasing companies, fleets, and financial institutions process vehicle damage assessments.

We combine computer vision, automation, and modern cloud architecture to deliver scalable and intelligent inspection workflows.

We are building a robust, event-driven backend system — and we’re looking for a strong Senior Backend Engineer to help us scale it properly.

🧠 What You’ll Do

• Design and build scalable microservices using NestJS (TypeScript)
• Architect and maintain event-driven systems using Kafka / RabbitMQ
• Design clean domain-driven services (inspection flows, reports, billing, notifications)
• Work with PostgreSQL (schema design, optimization, migrations)
• Improve system reliability, observability, and performance
• Participate in architectural decisions (modular monolith vs microservices boundaries)
• Collaborate closely with frontend, QA, and AI teams
• Write clean, testable, production-ready code
• Help improve CI/CD and deployment pipelines (AWS environment)

🏗 Tech Stack

• Backend: NestJS (TypeScript)
• Architecture: Microservices, Event-Driven
• Messaging: Kafka and/or RabbitMQ
• Database: PostgreSQL
• Cloud: AWS
• Containerization: Docker
• CI/CD: GitHub Actions (or similar)
• APIs: REST (future: gRPC)

✅ Requirements

• 5+ years of backend development experience
• Strong experience with microservices architecture
• Hands-on experience with event-driven systems (Kafka or RabbitMQ)
• Deep knowledge of NestJS or Node.js backend frameworks
• Strong experience with PostgreSQL (indexes, performance tuning, transactions)
• Understanding of distributed systems challenges (idempotency, retries, eventual consistency)
• Experience designing APIs and maintaining clean contracts
• Startup mindset: ownership, autonomy, speed

🎯 Nice to Have

• Experience with Domain-Driven Design (DDD)
• Experience with inspection, insurance, fintech, or fleet systems
• Familiarity with Kubernetes
• Experience building high-throughput systems
• Knowledge of AI/ML service integrations

💼 What We Offer

• Work on a real AI product with global customers
• Strong technical ownership
• Fast-paced startup culture
• Flexible work schedule
• Competitive compensation
• Opportunity to shape architecture decisions

💡 Who Will Thrive Here

Someone who:

• Thinks in systems, not just endpoints
• Cares about architecture quality
• Can balance speed and correctness
• Takes ownership instead of waiting for tickets

About Tie

Tie is building the next generation of identity resolution and marketing intelligence. Our platform connects hundreds of millions of consumers across devices, browsers, and channels—without relying on cookies—to power higher deliverability, smarter targeting, and measurable revenue lift for modern marketing teams.

At Tie, AI is not a feature—it is a core execution advantage. We operate large-scale identity graphs, real-time scoring systems, and production ML pipelines that directly impact revenue, deliverability, and customer growth.

The Role

We are looking for a Senior AI / Machine Learning Engineer to design, build, and deploy production ML systems that sit at the heart of our identity graph and scoring platform. You will work at the intersection of machine learning, graph data, and real-time systems, owning models end to end—from feature engineering and training through deployment, monitoring, and iteration.

This role is highly hands-on and impact-driven. You will help define Tie’s ML architecture, ship models that operate at sub-second latency, and partner closely with platform engineering to ensure our AI systems scale reliably.

What You’ll Do

• Design and deploy production-grade ML models for identity resolution, propensity scoring, deliverability, and personalization
• Build and maintain feature pipelines across batch and real-time systems (BigQuery, streaming events, graph-derived features)
• Develop and optimize classification models (e.g., XGBoost, logistic regression) with strong handling of class imbalance and noisy labels
• Integrate ML models directly with graph databases to support real-time inference and identity scoring
• Own model lifecycle concerns: evaluation, monitoring, drift detection, retraining, and performance reporting
• Partner with engineering to expose models via low-latency APIs and scalable services
• Contribute to GPU-accelerated and large-scale data processing efforts as we push graph computation from hours to minutes
• Help shape ML best practices, tooling, and standards across the team

What You’ll Bring

Required Qualifications

• 5+ years of experience building and deploying machine learning systems in production
• Strong proficiency in Python for ML, data processing, and model serving
• Hands-on experience with feature engineering, model training, and evaluation for real-world datasets
• Ability to travel outside of Ukraine is a must
• Experience deploying ML models via APIs or services (e.g., FastAPI, containers, Kubernetes)
• Solid understanding of data modeling, SQL, and analytical workflows
• Experience working in a cloud environment (GCP, AWS, or equivalent)
• Experience with graph data, graph databases, or graph-based ML

• Familiarity with Neo4j, Cypher, or graph algorithms (community detection, entity resolution)

  Preferred / Bonus Experience

• Experience with XGBoost, tree-based models, or similar classical ML approaches
• Exposure to real-time or streaming systems (Kafka, Pub/Sub, event-driven architectures)
• Experience with MLOps tooling and practices (CI/CD for ML, monitoring, retraining pipelines)
• GPU or large-scale data processing experience (e.g., RAPIDS, CUDA, Spark, or similar)
• Domain experience in identity resolution, marketing technology, or email deliverability

Our Technology Stack

• ML & Data: Python, Pandas, Scikit-learn, XGBoost
• Graphs: Neo4j (Enterprise, GDS)
• Cloud: Google Cloud Platform (BigQuery, Vertex AI, Cloud Run, Pub/Sub)
• Infrastructure: Docker, Kubernetes, GitHub Actions
• APIs: FastAPI, REST-based inference services

What We Offer

• Competitive compensation, including salary, equity, and performance incentives
• Opportunity to work on core AI systems that directly impact revenue and product differentiation
• High ownership and autonomy in a senior, hands-on role
• Remote-first culture with a strong engineering and data focus
• Exposure to cutting-edge problems in identity resolution, graph ML, and real-time AI systems

• Clear growth path toward Staff / Principal IC roles

  What else:

• 4 weeks of paid vacation per year (flexible scheduling)
• Unlimited sick leave — we trust your judgment and care about your health
• US Bank Holidays off (American calendar)
• Remote-first culture and flexible working hours
• Flat structure, no micromanagement, and full ownership

• Opportunity to make a real impact during a critical growth phase

  Interview Process

• Recruitment Screening Call
• Initial call with Head of Data Science & AI and CTO  (30 min) in English
• Technical deep dive Interview (1,5h)  in English

• Optional test-task (paid)

  Why Join Us?

• High-impact delivery leadership role during a critical period
• Real ownership and autonomy
• Opportunity to shape delivery across the entire engineering organization
• Exposure to SaaS, data, integrations, automation, and platform work
• Collaboration with global teams and vendors
• A strong product with real scale and momentum

Why This Role Matters

At Tie, your work will not live in notebooks or experiments—it will power production systems used by real customers at scale. You will help define how AI is embedded into the company’s core platform and play a key role in making machine learning a durable competitive advantage.