AffirmHiring

Software Engineer II, Backend (Card Integrations and Payments Experience)

  • Remote, Poland
  • Mid-level
  • Posted 13 days ago
Apply with Keywordise AI

or apply from Claude / ChatGPT / Muse

In one line

Backend engineer for the card checkout team, building payment flows in the app; office-based role in Poland with equity on top of base pay.

About the role

Someone who likes turning a simple business problem into a solution spread across several services will fit here. The team owns the in-app experience of the card products and works with product, design and analytics.

At a glance

Pay
Not stated in the posting
Remote scope
Remote, Poland
Seniority
Mid-level
Skills
Python, Kotlin, AWS, MySQL, Kubernetes, Distributed systems
Posted
16 Oct 2026
Last checked
28 Oct 2026

What you will do

  • Break bigger projects into tasks with support from the tech lead and manager, delivering in phases
  • Work with product, design and analytics through ideation, technical constraints and trade-offs
  • Create and watch metrics, escalate when needed and help keep services running
  • Join team growth work such as the interview process

What they look for

  • Two or more years of software engineering experience
  • Backend systems designed, built and launched, with Python or Kotlin
  • Knowledge of distributed systems basics and tools like AWS, MySQL and Kubernetes
  • Good written and spoken communication for a global team

Benefits

  • Base pay plus equity from the parent company and a benefits package

How Keywordise applies for you

  1. 1Upload your CVAdd your CV once. It takes about a minute.
  2. 2Tailored to this jobKeywordise writes a CV and a cover letter for this job from your real experience.
  3. 3The form fills itselfName, email, experience and screening questions, field by field.
  4. 4Application sentYou get a receipt and follow it in your dashboard.

Apply with Keywordise AI7-day free trial, no card.

Apply from your AI assistant

Connect Keywordise to your assistant once, then send it the prompt. It applies for you.

ClaudeConnectorChatGPTConnectorMuseby Meta

Claude

  1. In Claude, open Settings, then Connectors, and choose Add custom connector.
  2. Name it Keywordise and paste the connector URL.
  3. Click Connect, log in to Keywordise and approve. Then send the prompt in a new chat.
Connector URL
https://keywordise.com/mcp

Disconnect any time in your Keywordise settings.

ChatGPT

  1. In ChatGPT, open Settings, then Connectors. On plans that need it, turn on developer mode first.
  2. Add a new connector with the connector URL and choose OAuth. Leave the client ID and secret empty.
  3. Log in to Keywordise and approve. Then send the prompt in a new chat.
Connector URL
https://keywordise.com/mcp

Disconnect any time in your Keywordise settings.

Muse

  1. Open Muse (muse.ai or the app) and send it the message below.
  2. If Muse asks how to sign in, answer OAuth. Open the sign-in link it sends, log in to Keywordise and approve.
  3. Send the prompt. Muse asks before it sends anything.
Message for Muse
Add a custom connector called Keywordise. It is a remote MCP server at https://keywordise.com/mcp and uses OAuth. Give me the sign-in link.

Muse is available in the US only for now.

Prompt
Apply to Keywordise job vjvhe6chwn
How to connect

Questions about this job

Is this a remote job, and where can I work from?

Yes. The posting lists Software Engineer II, Backend (Card Integrations and Payments Experience) as a remote role for candidates in Poland.

What does this job pay?

No pay range is stated in the posting.

What experience is needed?

It is a mid-level role. The posting asks for: two or more years of software engineering experience; backend systems designed, built and launched, with Python or Kotlin; knowledge of distributed systems basics and tools like AWS, MySQL and Kubernetes. Skills it names include Python, Kotlin, AWS, MySQL.

How do I apply with Keywordise AI?

Click Apply with Keywordise AI, create an account and upload your CV. Your CV and cover letter are written for this job from what you have really done, then Keywordise applies for you. Trial: 7 days, no card.

More remote IT and software jobs

All remote IT and software jobs
AffirmRemote, Poland
Apply with Keywordise AI