This role is a client‑facing technical position at the intersection of product, engineering, and customer success, focused on supporting B2B clients integrating with complex payment gateway systems. You will act as the main technical partner for clients throughout the integration lifecycle, ensuring smooth onboarding, stable production launches, and continuous performance optimization. The position requires strong analytical skills to investigate transaction flows, logs, and API behaviours in order to quickly identify and resolve issues. You will collaborate closely with developers, QA, and product teams to ensure reliable system performance and continuous improvement. Beyond troubleshooting, you will play a key role in optimizing client configurations to maximise operational efficiency and success. This is a highly dynamic role in a fast‑scaling tech environment where ownership, problem‑solving, and proactive communication are essential.
Accountabilities
In this role, you will be responsible for supporting B2B clients through technical integration and ensuring stable, high‑performing payment system operations:
- Support B2B clients throughout the full integration lifecycle with a payment gateway, from initial request to production launch
- Analyse and troubleshoot technical issues related to payments, transaction flows, callbacks, statuses, and system errors
- Work with logs, transaction data, and system behaviour to identify root causes and propose effective solutions
- Configure client‑specific payment setups, including routing rules, cascades, payment methods, and operational logic
- Optimise client performance by improving configurations and reducing reliance on engineering escalations
- Collaborate with developers and QA teams to resolve complex technical incidents and integration challenges
- Provide post‑launch support, ensuring quick response and resolution of production incidents
- Identify process inefficiencies in client interactions and propose improvements to internal workflows
- Collect structured client feedback and relay it to product teams to support continuous platform improvement
Requirements
The ideal candidate has strong technical understanding combined with experience in B2B client‑facing or integration‑focused roles:
- 2+ years of experience working with B2B clients in technical support, account management, or integration‑related roles
- Solid understanding of payment systems, transaction flows (deposit/payout), statuses, and callback mechanisms
- Basic knowledge of APIs, including request/response structures, HTTP status codes, and webhooks
- Ability to read and apply API documentation in real‑world integration scenarios
- Experience working with logs and debugging technical issues independently
- Strong problem‑solving skills with the ability to handle multiple integrations and maintain context
- Ability to work autonomously without heavy reliance on developers for first‑level troubleshooting
- Intermediate English level or higher for communication with international partners
- Nice to have: experience with payment gateways, routing logic, Postman/Swagger, monitoring tools (e.g., Sentry, Grafana), or backend system understanding
Benefits
- Versátil work set‑up with remote or office‑based options
- Official employment in Ukraine or Poland with full administrative support
- 20 paid vacation days plus public holidays and sick leave
- Comprehensive health insurance and psychological support coverage
- Monthly Benefit Cafe allowance for personal interests, hobbies, or sports
- Regular team events, workshops, and corporate activities
- Learning and development budget, including courses, mentoring, and English classes
- Strong focus on work‑life balance and minimal bureaucracy
- Collaborative, fast‑paced environment with a culture of openness, initiative, and continuous growth
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