Support Engineer

Unlimit

Belgrade, RS

On-siteCareer-pivot friendly

Who this role is best for

Best suited to mid-level engineers with 1-2 years in payment processing systems who thrive in a fintech environment requiring API and log analysis skills.

Best fit for

Candidates with hands-on experience in card processing systems and API tools will align well.
— “Experience in supporting card processing systems at least 1 year”
Those comfortable with system log analysis and routine task automation fit naturally.
— “Analysis of system events - system logs, etc.”
Engineers familiar with financial systems and AI automation tools have an edge.
— “Performing and automation of routine procedures (including AI automation tools)”

Things to consider

Role involves direct client communication via Slack, requiring strong interpersonal skills.
— “Communication with client's support representatives in Slack chats”
Expect to handle reverse tasks from internal teams, adding to workload variety.
— “Reception and processing of reverse tasks from internal teams”

How to stand out

Highlight specific instances where you automated processes in payment systems.
— “Performing and automation of routine procedures”
Demonstrate expertise with Core Banking Systems or Temenos to differentiate.
— “Experience with Core Banking System, (experience with Temenos would be your benifit)”
Showcase hands-on experience with logging tools like Splunk or DataDog.
— “Hands-on experience with any logging system (Splunk, CloudWatch, DataDog, etc.)”

Pace · Fast PacedCollaboration · HighAutonomy · MediumDecision Impact · TeamLevel · Mid Level

Derived from job-description analysis by Serendipath's career intelligence engine.

What success looks like

supporting card processing systems
escalating tickets
online monitoring

Typical background

1-2 years of experience in payment processing systems

Skills & requirements

Required

Card Processing Systems SupportLogging SystemsHTTP ProtocolApi-browsersPl/sql

Preferred

Core Banking System ExperienceKyc/kyb ExperienceSmartvista ExperienceSalesforce Experience

Stack & domain

Card Processing SystemsCard Processing OperationsAuthorization And ClearingLogging SystemsHttp ProtocolApi-browsersPl/sqlCrud QueriesCore Banking SystemKyc/kybSmartvistaBaasSalesforceCommunicationTeamworkProblem-solvingAttention To DetailFintechPayment ProcessingMulti-currency Business AccountsCrypto GatewaysAi-native Financial Infrastructure

About the role

Original posting from Unlimit via Lever

About Unlimit
Unlimit is a global fintech ecosystem built to eliminate financial borders holding businesses back. The company provides the extensive infrastructure needed to scale globally, integrating payment processing, multi-currency business accounts, BaaS and crypto gateways into a single, intelligent platform.
Across 17 offices globally, Unlimit bridges hyper-local expertise with a high-capacity financial network, giving companies the agility to expand across regions with operational confidence and speed. Driving the evolution of payments, Unlimit is transforming its infrastructure from human-operated fintech into AI-native financial infrastructure — where APIs are consumed by machines, integrations are negotiated by agents, and systems evolve continuously through intelligent automation. Our next users are not only humans. They are AI agents acting on behalf of humans and businesses.
Unlimit serves more than the needs of businesses today; we are building the nervous system for a borderless global economy.
Requirements:
Experience in supporting card processing systems at least 1 year or 2 years of any payment processing systems
Knowledge of the principles of Card Processing Operations of the authorization and clearing part
Hands-on experience with any logging system (Splunk, CloudWatch, DataDog, etc.)
Knowledge of the HTTP protocol of the application layer, experience with the API-browsers (Postman, Swagger, etc.)
PL/SQL - writing simple CRUD queries
Nice to have:
Experience with Core Banking System, (experience with Temenos would be your benifit)
Experience with KYC/KYB (like SumSub, etc.)
Experience with SmartVista
Any experience with Banking as a Service products
Hands-on with SalesForce
Responsibilities:
Communication with client's support representatives in Slack chats
Escalation of tickets to Engineers of the Card Processing Team
Online monitoring of the in-house card-processing system
Analysis of system events - system logs, etc.
Reception and processing of reverse tasks from internal teams
Performing and automation of routine procedures (including AI automation tools): file exchange, running of system scheduled tasks
Setting up emulators of payment systems (setting up test/pre-prod environments)

Source: Unlimit careers (Lever)