Job VC
Senior Support Engineer
Technologies
Description
Our company
6-Systems
is a Kyiv’s based development office of the SIXT Company, one of the biggest global car rental providers. Our web and mobile app solutions allow millions of customers around the globe to easily rent a car anywhere in the world.
We’re looking for a Senior or Middle-to-Senior Support Engineer to join one of the multiple teams of SIXT Tech.
In this role you will be supporting operations of financial systems for our 100-year-old international group. As significant part of software development team you will work closely with internal business departments, handle their requests, identify problems and find solutions.
Joining SIXT Tech you are joining one of the future tech giants.
Responsibilities
• Monitor and triage financial system health using automated alerts and observability tools (Kibana, Instana, Grafana, Camunda/Temporal); detect abnormalities in payment processing, invoicing, settlement, and accounting reporting flows
• Investigate Camunda BPM workflows to identify stuck or failed process instances across payment and reconciliation pipelines, including RPA-driven processes (e.g. bank balance control, chargeback handling, statement reconciliation)
• Support POS device operations — monitor the health and connectivity of payment terminals across rental branches, investigate device-level transaction failures, coordinate with on-site teams and device vendors for firmware, configuration, and replacement issues
• Respond to support requests within agreed SLAs — from internal business stakeholders and external payment partners alike
• Communicate with external partners (PSPs, acquiring banks, card networks, POS vendors) to investigate and resolve integration issues, transaction failures, and service disruptions
• Perform root-cause analysis (RCA) and coordinate resolution across IT and business teams; drive post-incident reviews and initiate solution improvements
• Create and maintain incident reports with clear timelines, impact assessments, and corrective actions
• Use and improve support tooling for system configuration, manual interventions, and operational fixes; actively suggest improvements to monitoring/alerting and support workflows
• Leverage AI-assisted tools
(LLM-based
log analysis, internal AI assistants) to accelerate issue diagnosis and reduce mean time to resolution (MTTR)
• Build internal AI workflows that reduce repetitive support work — from automated triage and log summarization to incident report drafting and partner-communication templates
Essential Requirements
• Strong analytical and problem-solving skills — comfortable forming and testing hypotheses under pressure
• Experience in payments or banking — understanding of payment flows (authorisation, capture, refund, chargeback, dispute resolution, settlement)
• Advanced written and verbal English — for cross-border communication with business teams, partners, and third-party vendors
• Experience supporting enterprise solutions in a product company
• Hands-on experience with log analysis and observability tools — Kibana, Instana, Grafana, Datadog, or equivalent; comfortable reading and interpreting logs, metrics, and traces
• Experience with issue tracking systems — Jira or equivalent; structured thinking in tickets, epics, and SLA tracking
• Familiarity with Camunda BPM — ability to navigate, inspect, and troubleshoot process instances and incident queues
• Hands-on experience using AI tools in a professional context — prompt crafting, validating outputs, and the judgment to know when not to trust them (critical when working with financial data)
Nice to Have’s
• Understanding of payment reconciliation, bank balance control, settlement file processing, and chargeback lifecycle
• Familiarity with PCI DSS requirements and general payment security principles
• Experience with POS / card-present payment flows, terminal integrations, and EMV transaction troubleshooting
• Hands-on experience with SQL — ability to query databases independently to investigate data issues
• Basic scripting ability (Python, Bash, or similar) for ad-hoc data investigation or log parsing
• Experience building internal AI automations or workflows — e.g. MCP servers, n8n / Zapier / Make, LangChain, custom GPTs, or scripting against LLM APIs to automate triage, log summarization, or report generation
• Familiarity with AI-assisted coding tools (Cursor, Claude Code, GitHub Copilot) for writing small support scripts and ad-hoc queries
We offer:
• High salary (settlement to euro)
• Full time employment as internal employee of Sixt TECH Ukraine
• Relocation compensaton
• People-oriented management without bureaucracy
• A challenging job where you can learn and grow
• Paid vacation — 25 calendar days
• Educational budget
• Medical insurance
• Both, gym and foreign language study — the half expenses compensation
6-Systems
is a Kyiv’s based development office of the SIXT Company, one of the biggest global car rental providers. Our web and mobile app solutions allow millions of customers around the globe to easily rent a car anywhere in the world.
We’re looking for a Senior or Middle-to-Senior Support Engineer to join one of the multiple teams of SIXT Tech.
In this role you will be supporting operations of financial systems for our 100-year-old international group. As significant part of software development team you will work closely with internal business departments, handle their requests, identify problems and find solutions.
Joining SIXT Tech you are joining one of the future tech giants.
Responsibilities
• Monitor and triage financial system health using automated alerts and observability tools (Kibana, Instana, Grafana, Camunda/Temporal); detect abnormalities in payment processing, invoicing, settlement, and accounting reporting flows
• Investigate Camunda BPM workflows to identify stuck or failed process instances across payment and reconciliation pipelines, including RPA-driven processes (e.g. bank balance control, chargeback handling, statement reconciliation)
• Support POS device operations — monitor the health and connectivity of payment terminals across rental branches, investigate device-level transaction failures, coordinate with on-site teams and device vendors for firmware, configuration, and replacement issues
• Respond to support requests within agreed SLAs — from internal business stakeholders and external payment partners alike
• Communicate with external partners (PSPs, acquiring banks, card networks, POS vendors) to investigate and resolve integration issues, transaction failures, and service disruptions
• Perform root-cause analysis (RCA) and coordinate resolution across IT and business teams; drive post-incident reviews and initiate solution improvements
• Create and maintain incident reports with clear timelines, impact assessments, and corrective actions
• Use and improve support tooling for system configuration, manual interventions, and operational fixes; actively suggest improvements to monitoring/alerting and support workflows
• Leverage AI-assisted tools
(LLM-based
log analysis, internal AI assistants) to accelerate issue diagnosis and reduce mean time to resolution (MTTR)
• Build internal AI workflows that reduce repetitive support work — from automated triage and log summarization to incident report drafting and partner-communication templates
Essential Requirements
• Strong analytical and problem-solving skills — comfortable forming and testing hypotheses under pressure
• Experience in payments or banking — understanding of payment flows (authorisation, capture, refund, chargeback, dispute resolution, settlement)
• Advanced written and verbal English — for cross-border communication with business teams, partners, and third-party vendors
• Experience supporting enterprise solutions in a product company
• Hands-on experience with log analysis and observability tools — Kibana, Instana, Grafana, Datadog, or equivalent; comfortable reading and interpreting logs, metrics, and traces
• Experience with issue tracking systems — Jira or equivalent; structured thinking in tickets, epics, and SLA tracking
• Familiarity with Camunda BPM — ability to navigate, inspect, and troubleshoot process instances and incident queues
• Hands-on experience using AI tools in a professional context — prompt crafting, validating outputs, and the judgment to know when not to trust them (critical when working with financial data)
Nice to Have’s
• Understanding of payment reconciliation, bank balance control, settlement file processing, and chargeback lifecycle
• Familiarity with PCI DSS requirements and general payment security principles
• Experience with POS / card-present payment flows, terminal integrations, and EMV transaction troubleshooting
• Hands-on experience with SQL — ability to query databases independently to investigate data issues
• Basic scripting ability (Python, Bash, or similar) for ad-hoc data investigation or log parsing
• Experience building internal AI automations or workflows — e.g. MCP servers, n8n / Zapier / Make, LangChain, custom GPTs, or scripting against LLM APIs to automate triage, log summarization, or report generation
• Familiarity with AI-assisted coding tools (Cursor, Claude Code, GitHub Copilot) for writing small support scripts and ad-hoc queries
We offer:
• High salary (settlement to euro)
• Full time employment as internal employee of Sixt TECH Ukraine
• Relocation compensaton
• People-oriented management without bureaucracy
• A challenging job where you can learn and grow
• Paid vacation — 25 calendar days
• Educational budget
• Medical insurance
• Both, gym and foreign language study — the half expenses compensation