Middle Payment Technical Manager

GR8 Tech group; Polska; Hybrid; PLN 60,000 - 90,000; Full time

Benefits offered by this job

Remote-first

Learning budget

Team events

Career growth

Job summary

GR8_TECH is seeking a skilled professional to manage payment configuration and launches for its iGaming platform. You will coordinate integrations, review requirements, and use AI-assisted tools to prepare MID configurations, ensuring smooth production and post-launch validation across PSPs and merchant teams.

The role emphasizes technical troubleshooting, documentation, and cross-team collaboration to optimize payment workflows and reduce failure points in live environments.

Qualifications

• 1–1.5 years of experience in payment integration configuration or related role.
• Hands-on experience configuring payment methods and MIDs.
• Strong knowledge of JSON and XML payloads and provider schemas.
• Experience with REST APIs, API contracts, and Postman or similar tools.
• SQL/PostgreSQL knowledge for data validation.
• Understanding of webhooks, callbacks, and common payment flows (auth, capture, settlement).
• Familiarity with 3‑DS and SCA, and MID management.
• English at B2 level; Ukrainian or Russian at B1 level.
• Familiarity with Jira/Confluence and log analysis tools.

Responsibilities

• Configure projects, MIDs, payment methods and gateways per priorities.
• Review requirements and clarify missing information before config.
• Use AI-assisted tools to prepare MID configurations.
• Perform pre-production and production checks with checklists.
• Coordinate testing with PSPs and merchant teams.
• Execute production launches and verify transactions.

Skills

Payment integration

Payment methods

JSON/XML payloads

REST APIs

SQL/PostgreSQL

Webhooks & callbacks

3DS/SCA/MID mgmt

Jira/Confluence

CI/CD basics

English B2+

Ukrainian/Russian B1

Postman

Tools

Postman

Jira

Confluence

Job description

GR8_TECH builds B2B iGaming platforms for operators who play to lead.

We deliver full-cycle, high-impact tech designed to scale — from seamless integrations and expert consulting to long-term operational support. Our platform powers millions of active players and drives real business growth. Call it what it is: the iGaming Platform for Champions.

With 1000+ GR8 people across locations and time zones, we don't just ship technology — we help operators build success stories across brands, markets, and geos.

Our ambition drives us. Our people make it real.

If you're a challenger in spirit and a champion in action — join us.

What you'll drive

Payment configuration & launch management

• Configure projects, MIDs, payment methods, gateways, and client requests in Back Office according to agreed priorities;




• Review requirements and clarify missing information before starting configuration;




• Use AI-assisted tools, such as Kiro, to prepare MID configuration tasks based on client requirements and provider documentation;




• Perform pre-production and production checks using established checklists and attach supporting evidence to Jira tasks;




• Coordinate testing with PSPs, local testers, and merchant teams;




• Execute production launches and verify initial transactions after each launch.

Technical troubleshooting & support

• Provide L3 support for configuration‑related issues and resolve them within agreed SLAs;




• Investigate issues using logs, API responses, transaction records, and SQL queries;




• Validate API contracts, payloads, webhooks, and callbacks to identify configuration issues;




• Escalate blockers, dependencies, and delivery risks to the Team Lead;




• Support merchant teams in troubleshooting payment configuration issues.

Process improvement & documentation

• Maintain configuration records, setup instructions, and troubleshooting documentation;




• Develop a working knowledge of the 3API product, Payment Gateway adapters, and related configuration processes;




• Collaborate with Product and Analytics teams to simplify configuration in Back Office and the Merchant Dashboard;




• Identify recurring issues and propose improvements to configuration workflows;




• Use AI-assisted tools to improve configuration accuracy and reduce manual work.

Merchant enablement & collaboration

• Work closely with internal teams, PSPs, local testers, and merchant teams to ensure successful payment launches;




• Train merchant teams to configure MIDs and payment methods in Back Office using approved instructions;




• Communicate configuration requirements, testing results, and potential risks clearly;




• Ensure smooth handovers and consistent execution of established processes.

What makes you a GR8 fit

Must-have

• At least 1–1.5 years of experience in payment integration configuration, technical operations, or a similar role;




• Hands‑on experience configuring payment methods and Merchant IDs (MIDs);




• Strong understanding of JSON and XML, including payload structures and provider schemas;




• Experience with REST APIs, API contract validation, and Postman or equivalent tools;




• Working knowledge of SQL/PostgreSQL for data validation and troubleshooting;




• Understanding of webhooks, callbacks, and common payment flows, including authorization, capture, settlement, refunds, and voids;




• Knowledge of 3‑D Secure (3DS), Strong Customer Authentication (SCA), and MID management;




• Familiarity with Jira, Confluence, manual testing, and log analysis tools;




• Basic understanding of CI/CD and software development lifecycle processes;




• English at B2 level or above;




• Ukrainian or Russian at B1 level or above.

Nice to have

• Experience in the iGaming industry;




• Familiarity with KYC/AML requirements and fraud prevention controls relevant to payment configuration;




• Experience using AI-assisted tools for technical configuration or documentation;




• Experience supporting production launches and resolving payment‑related incidents.

Why you'll love working here:

Benefits Cafeteria — annual budget you allocate to:

Sports Medical Mental health Home office Languages.

Work-life & support

• Paid maternity/paternity leave + monthly childcare allowance.




• 20+ vacation days, unlimited sick leave, emergency time off.




• Remote-first + tech support + coworking compensation.




• Team events (online/offline/offsite).




• Learning culture with internal courses + growth programs.

Our culture & core values:

GR8_TECH culture is how we win — through trust, ownership, and a growth mindset. We move fast, stay curious, and keep it real, with open feedback, room to experiment, and a team that's got your back.

FUELLED BY TRUST: we're open, honest, and have each other's backs.

OWN YOUR GAME: we take initiative and own what we do.

ACCELER8: we move fast, focus smart, and keep it simple.

CHALLENGE ACCEPTED: we grow through challenges and stay curious.

BULLETPROOF: we're resilient, ready, and always have a plan.