L2 Application Support Engineer for UK FinTech Startup

Poland, 100% Remote
Up to 3000 EUR/month on B2B
  • B2B
  • ,
  • Full-time

Itentio IT Recruitment

We are partnered with a rapidly growing UK-based fintech company building next-generation digital solutions for trade and supply chain finance. Their mission is to close the global trade finance gap by enabling mid-market businesses in emerging markets to access transparent, secure, and efficient cross-border funding. They are now seeking an L2 Application Support Engineer to strengthen their technical operations and ensure the stability and reliability of core fintech systems used by customers worldwide.

Whom are we looking for – L2 Application Support Engineer

Location: Kraków / Remote (Poland-based)

About the Company and the Position

Our client is a UK-based fintech innovating in digital trade and supply chain finance. Their platforms help mid-sized companies access global funding opportunities while ensuring compliance, transparency, and operational resilience. With strong momentum across Europe, MENA, and emerging markets, the company continues to expand its engineering and support teams to meet growing international demand.

You will join a small, fast-moving engineering organization where support, product, and development teams work closely together. Expect deep technical exposure across backend services, databases, observability, API integrations, and incident management. You’ll work with senior engineers, gain hands-on experience, and help shape scalable support processes for a globally used fintech platform.

This role will also partially support a client in Qatar, requiring coverage from Sunday to Thursday, 7:00 AM – 4:00 PM CET (Central European Time), including a lunch break. On Sundays, you will additionally assist with L1-level triage, prioritizing high-urgency tickets, filtering them for the week ahead, and escalating potential bugs as needed.

Why is it worth joining this company?

  1. Work on real production systems powering high-value financial operations.
  2. Direct collaboration with senior engineers in an environment that values curiosity, ownership, and autonomy.
  3. Exposure to modern observability, cloud practices, and incident management workflows.
  4. Competitive salary with long-term development opportunities.

L2 Application Support Engineer – Key Responsibilities

  • Own incidents end-to-end – from triage to resolution – ensuring timely stakeholder updates and adherence to SLAs.
  • Reproduce and analyze issues by inspecting logs (structured/unstructured), metrics, and traces to pinpoint root causes.
  • Query and validate data in SQL databases (PostgreSQL/MySQL), perform safe checks, and propose approved data fixes.
  • Navigate system architecture (services, modules, integrations) and interpret stack traces/code paths to isolate faults.
  • Debug issues in lower environments, verify fixes, and lead post-incident reviews with clear RCAs and preventive measures.
  • Write high-quality bug reports including reproduction steps, impact analysis, logs, queries, environment details, and regression windows.
  • Prioritize defects based on business impact, frequency, and regulatory risk, while pushing back on low-value escalations.
    Maintain documentation such as runbooks, KB articles, and queries to improve future resolution times.
  • Enhance observability by proposing new alerts, dashboards, and reducing noise from false alarms.
  • Collaborate cross-functionally:
 With L1 Support to refine playbooks and handle urgent issues; With L3 Engineering to drive durable code-level fixes and minimize recurrences.
  • Participate in on-call rotation and ensure smooth handoffs with clear context.

L2 Application Support Engineer – Main requirements

  • 3+ years in L2/L3 application support, SRE, or backend QA roles supporting production systems.
  • Strong SQL skills (joins, window functions, query optimization) and experience with at least one major RDBMS (PostgreSQL/MySQL).
  • Basic knowledge of networking concepts (HTTP, TLS, DNS).
  • Excellent written and verbal communication – clear, concise incident updates and detailed, actionable bug reports.

Nice-to-Have:

  • Familiarity with cloud platforms (AWS, GCP, or Azure) or on-prem operations.
  • Experience in FinTech or other regulated environments — understanding SLAs/SLOs, auditability, PII handling, and change control.
  • Scripting/automation experience (Python, Bash) and comfort with API tools (Postman, cURL).

L2 Application Support Engineer – What is in it for you?

  • Competitive salary: Up to 3000 EUR/month on B2B contract.
  • 30 days of paid vacations per year.
  • Unlimited paid sick leave (used responsibly).
  • Flexible working hours.
  • 100% remote setup.
  • Budget for courses, conferences, and self-development.
  • Opportunity to receive work devices if needed.

The Next Step for you:

Is it a new challenge for you? If you want to become a valuable part of this project, please apply via the contact form below.

Itentio IT Recruitment privacy and equal opportunity statements:

By submitting the recruitment application, you consent to the processing of your personal data contained therein. The controller of your personal data is Vladyslav Muzhylivskyi operating under the business name Vladyslav Muzhylivskyi Itentio with its registered office in Kraków (Tax ID: 6751522794). Personal data will be processed in order to carry out the recruitment process for the position specified in the job offer, including for the purpose of assessing the qualifications for work in this position. You can withdraw your consent at any time, which, however, does not affect the legality of the processing that was carried out on its basis before its withdrawal. You have the right to request access to your data, to rectify it, delete it or limit its processing, as well as the right to transfer your personal data, the right to object to data processing and the right to lodge a complaint with the supervisory authority for the protection of personal data. Additional information on the processing of personal data is in our Privacy Policy available at https://itentio.com/privacy-policy/.

Please note that all applications are treated with strict confidence. Itentio IT Recruitment will never share your data outside our organization without your written consent. Itentio is an equal-opportunity recruitment company and values diversity at our company. We do not discriminate based on race, religion, colour, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status.

Enjoy all new opportunities by subscribing to our LinkedIn and Facebook pages.

Stages of the recruitment process

01 step

Intro call with Itentio recruiters

An online interview on phone/online with our recruiter to discuss this position and talk about your experience (30 minutes).

02 step

Intro call with the company

The culture fit conversation with the Manager (30 minutes).

03 step

Home Task

A short home assignment. You may use AI tools to speed it up and make the results faster, but must explain your approach during the next interview round.

04 step

Technical Interview

An online call with the CTO and Department Lead (1–1.5h). Includes technical and soft-skill questions.

05 step

Final Round

A meeting with the CEO & co-founder (30 minutes). After this stage the company will send you the offer letter. Congratulations and welcome on board!

Are you a talented IT professional looking for exciting career opportunities?

Take the first step towards your dream job by contacting Itentio IT Recruitment today!

Fill out this contact form and upload your CV to get started. Our team will review your information and get in touch with you.

We can't wait to hear from you and help you advance your IT career!

    Scroll to top