Lista ofert pracy

• Design, develop, and maintain scalable finance-focused backend solutions using Python and Django
• Integrate external systems and third-party APIs
• Work closely with Product Managers and Tech Leads to define, size, and solve real-world telecom customer problems
• Write high-quality, well-tested code ensuring reliable daily deployments to production
• Participate in peer reviews, refinements, and continuous feedback loops across a multi-disciplinary team
• Maintain a developer-first quality ...

Must have:

• Strong Python engineering skills, ideally with production Django experience on complex, large-scale applications (not just small web apps)
• Good understanding of integration patterns, API development (REST / GraphQL), and third-party system interoperability
• Solid experience in building automated tests: unit, integration, and E2E tests
• Passion for clean code, peer reviews, and high code quality standards
• Familiarity with scaling large systems — vertical scaling, ...

• Udział w tworzeniu API dla aplikacji Moje Siepomaga, która umożliwia zarządzanie kontem przez podopiecznego - każde Twoje rozwiązanie bezpośrednio wpływa na tysiące użytkowników.
• Rozwiązywanie problemów technicznych, które dotyczą skali (obsługujemy dziesiątki tysięcy aktywnych zbiórek).
• Projektowanie rozwiązań - nie tylko implementujesz gotowe zadania, ale aktywnie uczestniczysz w dyskusjach architektonicznych i proponujesz własne pomysły.
• Ścisła współpraca z ...

• Min. 6 lat doświadczenia z Ruby on Rails lub Grape.
• Swobodne poruszanie się w MySQL/PostgreSQL, SQL, optymalizacji zapytań.
• Znajomość Sentry, cache'owania (Memcached, Redis), CI/CD (Github Actions).
• Pisanie testów jednostkowych jako naturalna część procesu.
• Praca na macOS.
• Czytanie dokumentacji technicznej w języku angielskim (B1).
• Chęć posiadania realnego wpływu na produkt i architekturę systemu.
• Umiejętność dyskutowania o rozwiązaniach i bronienia swoich ...

• Implement and advocate for best-in-class reliability, observability, and scalability practices across the platform.
• Develop automated solutions for system reliability, capacity planning, and incident response to minimize manual intervention.
• Participate in improving Service Level Objectives (SLOs), Service Level Indicators (SLIs), and error budgets to enhance system reliability.
• Contribute to CI/CD pipeline improvements and DevOps practices.
• Support root cause analysis (RCA) ...

• 5 years of experience in software engineering, site reliability engineering, or cloud infrastructure roles.
• Experience with DevOps tooling and practices.
• Proficient in building service-oriented architectures and cloud-native distributed systems.
• Proficiency in programming languages such as Python, Go, Java, or C# or .Net.
• In-depth technical understanding and experience with at least two of the following DevOps platforms: GitHub, Azure DevOps, GitLab, or Jenkins.
• Hands-on experience ...

• Collaborate with fraud specialists, data scientists, and risk managers to understand new fraud typologies and business challenges.
• Translate complex business rules and legal requirements (GDPR, PSD3) into clear, unambiguous User Stories, functional specifications, and process flows (BPMN/UML).
• Analyze data and systems tracing transaction flows, validate hypotheses, and identify data gaps across our on-premise and cloud data lakes.
• Design & Document system integrations, mapping data flows...

• Experience as an IT Analyst, Technical Business Analyst, or Systems Analyst.
• Understanding of relational databases with ability to run queries necessary for analytical purposes.
• Data mapping creation/analysis experience, data models understanding.
• Proven experience in the banking or payments industry, with understanding of payment flows (Cards, SWIFT, SEPA, nonmon).
• Domain knowledge of financial crime prevention.
• Exceptional communication skills with the ability to explain complex ...

As a Senior Software Developer, you will:

• Contribute as a Sr. Individual Contributor within a team of top engineers using Agile methodology.
• Analyze, design, develop, test, and debug large and complex software enhancements and solutions within Charles River’s business and technical problem domains, including modifications to core frameworks and other primary facilities critical to system operation.
• Collaborate with Business Analysts and Product Managers to create simple and sustainable ...

Desired skills and competencies:

• 4-8 years of experience in Java development, preferably in the FinTech (financial markets) area.
• B.S. degree (or foreign education equivalent) in Computer Science, Engineering, or other technical course of study require

• Owning the 'App Review' Process: Managing the complete verification cycle with Meta (including creating required screencasts and writing scope justifications) to ensure the app is approved for Live access.
• Meta Ecosystem Configuration: Correctly setting up the application environment in the Meta for Developers console (identified by the client as the primary risk area).
• OAuth Strategy & Implementation: Implementing the 'Login with Instagram' flow to securely fetch specific influencer data ...

• Fluency in Polish and English.
• Experience with OAuth 2.0.
• Familiarity with Instagram Graph API.
• Meta App Review experience.
• Nice to have:
• Passport.js / NextAuth.js / OmniAuth (depending on stack).
• JWT (JSON Web Tokens).
• OpenID Connect (OIDC).
• Facebook Login Kit.
• GDPR compliance basics.

• Designing, building, and deploying at-scale infrastructure with a focus on distributed systems
• Building and maintaining architecture patterns for data processing, workflow definitions, and system-to-system integrations using Big Data and Cloud technologies
• Translating technical designs into robust, maintainable code and technical specifications aligned with industry standards
• Driving the creation of reusable data and infrastructure artifacts
• Establishing scalable, efficient, and ...

Technical Requirements (Must Have)

• 3 years of hands-on experience with Azure Data Factory and Databricks
• 5 years of experience in Data Engineering or Backend / Fullstack Software Development
• Strong SQL skills
• Proficiency in Python scripting
• Experience with Databricks, Spark, and large-scale data transformations
• Experience in data modeling for both relational and non-relational databases
• Experience with CI/CD pipelines
• Working knowledge of Git

Nice to Have

• Experience with ...

• Work with multiple development teams to raise engineering quality, standards, and ways of working.
• Focus on mentoring, setting standards, and shaping engineering practices with real, organization-level impact.
• Key focus areas include:
• Quality gates in Pull Request workflows
• Code review and testing standards
• Static code analysis (SonarQube)
• BDD adoption (Gherkin, Cucumber, JUnit)
• Mentoring and upskilling developers
• Engineering excellence mindset

Technical

• Strong Java background (architecture, best practices, code quality)
• Proven experience with PR-based workflows and quality gates
• Solid knowledge of SonarQube, test automation, CI/CD
• Nice to have: Vaadin, Integris
• Banking domain experience – plus

Methodology

• Proven experience mentoring and upskilling development teams
• Real-world BDD implementation in large environments
• Ability to work across multiple teams simultaneously

Language

• Fluent English
• German – ...

• Design and develop system architectures supporting physical products and their integrations.
• Lead implementation of new engineering architectures and reliability-focused solutions.
• Act as a technical SME and take ownership of key engineering decisions.
• Solve complex system and reliability issues across multiple teams.
• Apply SRE practices to ensure scalability, stability, and performance.
• Collaborate with cross-functional teams to improve system integrations and efficiency.

• Strong experience with Python and object-oriented programming.
• Solid understanding of system design, microservices, and web architectures.
• Hands-on experience with AWS (EC2, EKS, VPC, serverless technologies).
• Strong knowledge of Kubernetes and Docker.
• Experience with Infrastructure as Code, CI/CD, Linux.
• AWS Solutions Architect certification is a plus.

• Design, develop, and maintain ETL/ELT data pipelines in an AWS environment
• Implement batch and incremental data processing workflows
• Build and maintain Change Data Capture (CDC) solutions using AWS DMS and Kafka
• Develop data transformations in dbt with a strong focus on data quality and consistency
• Deploy and manage cloud-based data infrastructure on AWS
• Configure, maintain, and optimize Snowflake data warehouse environments
• Implement Infrastructure as Code using Terraform
• Work ...

• Minimum 4 years of experience in a Data Engineer role
• Strong proficiency in Python and SQL
• Hands-on experience with AWS services, particularly AWS Glue and AWS DMS
• Experience with Snowflake and dbt, including performance optimization
• Working knowledge of relational databases (PostgreSQL, MySQL, MS SQL Server)
• Experience with real-time and streaming data processing using Kafka
• Proficiency in Terraform and Infrastructure as Code practices
• Solid experience in building ETL/ELT ...

• Developing complex digital platforms - from architecture decisions to implementation and deployment.
• Work in autonomous teams (3-9 people) delivering mission-critical systems.
• Collaborate directly with technology leaders, founders, and domain experts to shape solutions that drive real business outcomes.

• Extensive commercial experience in building web-based applications (5 years).
• Strong proficiency in at least one of Upside’s core technology stack: Ruby, Python, JavaScript or the willingness to learn based on your current skills.
• Solid understanding of software architecture principles: monoliths, microservices, asynchronous systems, messaging patterns, and scalability.
• Deep knowledge of relational databases (we mostly use PostgreSQL) and performance optimization.
• Working ...