espeo
espeo~3d ago
New

Senior Fullstack Developer / Solution Architect

PolandPoland·Freelancesenior
EngineeringFullstack Developer
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Quick Summary

Requirements Summary

Extensive experience designing backend

Technical Tools
EngineeringFullstack Developer

We are a technology company that started its journey in 2008. Our main headquarters is located in the picturesque city of Poznań, nestled by the beautiful Malta lake. For more than 17 years, we have been assisting companies in developing and implementing innovative fintech solutions. Leveraging our expertise in areas such as blockchain, online payments, and more, our clients can invent and develop cutting-edge solutions and services that keep them at the forefront of innovation.

*We offer a hybrid work model, allowing you to balance office presence with remote work. However, it's important to note that the role emphasizes a stronger presence in the office to foster teamwork and effective communication.

Responsibilities

~1 min read
  • Defining and evolving the overall backend architecture of the platform

  • Designing scalable, secure services using Node. js + TypeScript

  • Establishing architecture standards, modular structure, and best practices

  • Leading technical design discussions and architecture decisions

  • Designing integration strategies for: KYC/AML providers, Identity verification services, Fintech APIs, Blockchain / digital asset infrastructure

  • Ensuring compliance, auditability, security, and regulatory requirements are embedded in system design

  • Designing API architecture (REST / GraphQL where applicable)

  • Defining authentication, authorization, and access control strategies

  • Supporting engineering teams via architecture reviews and technical mentoring

  • Collaborating with business stakeholders to translate requirements into technical solutions

  • Driving decisions around scalability, reliability, observability, and maintainability

  • Extensive experience designing backend / distributed systems architecture

  • Strong expertise in Node. js + TypeScript ecosystems

  • Experience with integration-heavy, service-based architectures

  • Strong understanding of API design, security, authentication, authorization

  • Experience with Prisma ORM or similar persistence layers

  • Strong knowledge of relational databases and data modeling

  • Experience working in regulated environments (fintech, banking, etc.)

  • Ability to balance business, compliance, and technical constraints

  • Strong communication and stakeholder management skills

  • English proficiency for direct technical and business collaboration

Nice to Have

~1 min read
  • Experience in capital markets, fintech, banking, or investment platforms

  • Knowledge of KYC/AML workflows and compliance frameworks

  • Experience with blockchain, wallets, tokenization, digital assets

  • Experience with GraphQL integrations

  • Familiarity with cloud-native architectures and DevOps practices

  • Previous experience as Lead Developer, Principal Engineer, or Architect

  • Opportunity to define architecture for a regulated fintech platform

  • High-impact role with real ownership over system design

  • Collaboration with senior engineering and business stakeholders

  • Work on complex fintech + blockchain + identity systems

  • Strong focus on scalability, compliance, and system design excellence

  1. HR Screening with Talent Acquisition Specialist (30 min)

  2. Technical Interview (60 min)

  3. Interview with Delivery Manager (30 min)

  4. Job Offer

Location & Eligibility

Where is the job
Freelance, Poland
On-site at the office
Who can apply
PL

Listing Details

First seen
June 10, 2026
Last seen
June 12, 2026

Posting Health

Days active
0
Repost count
0
Trust Level
51%
Scored at
June 10, 2026

Signal breakdown

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espeoSenior Fullstack Developer / Solution Architect