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JOB DETAILS

Senior Calypso Developer

CompanyTalan
LocationPoznan
Work ModeOn Site
PostedOctober 2, 2026
About The Company
Founded in France, Talan has grown into an international group that supports our clients in their end-to-end Data & AI transformation by combining management consulting with technological expertise. With over 6,000 employees across five continents, we accelerate our clients' transformations through long-term partnerships, creating measurable and sustainable impact. Our value proposition is built on a structured innovation ecosystem: 2,500 Data & AI experts, proprietary solutions built on advanced models, and an applied research, experimental development, and innovation laboratory. For more than 20 years, we have been translating technological innovation into competitive advantages across vital sectors: banking and financial services, energy, transport and mobility, luxury and retail, and healthcare. Driven by our promise of "Positive Innovation," we have established ourselves as a leading player in addressing the growing complexity of economic, technological, and regulatory environments.
About the Role

Company Description

Talan – Positive Innovation

Talan is an international consulting group specializing in innovation and business transformation through technology. With over 7,200 consultants in 21 countries and a turnover of €850M, we are committed to delivering impactful, future-ready solutions.

Talan at a Glance

Headquartered in Paris and operating globally, Talan combines technology, innovation, and empowerment to deliver measurable results for our clients. Over the past 22 years, we’ve built a strong presence in the IT and consulting landscape, and we’re on track to reach €1 billion in revenue this year.

Our Core Areas of Expertise

  • Data & Technologies: We design and implement large-scale, end-to-end architecture and data solutions, including data integration, data science, visualization, Big Data, AI, and Generative AI.
  • Cloud & Application Services: We integrate leading platforms such as SAP, Salesforce, Oracle, Microsoft, AWS, and IBM Maximo, helping clients transition to the cloud and improve operational efficiency.
  • Management & Innovation Consulting: We lead business and digital transformation initiatives through project and change management best practices (PM, PMO, Agile, Scrum, Product Ownership), and support domains such as Supply Chain, Cybersecurity, and ESG/Low-Carbon strategies.

We work with major global clients across diverse sectors, including Transport & Logistics, Financial Services, Energy & Utilities, Retail, and Media & Telecommunications.

Job Description

 

Location: Wrocław, Poland (On-site)
Relocation: Candidates located elsewhere in Poland are welcome to apply and should be open to relocating to Wrocław.

About the Opportunity

We are looking for a Senior Calypso Developer to join a newly formed technology team supporting the Capital Markets operations of a leading European banking organization.

This is a unique opportunity to help build a team from the ground up and play a key role in the evolution, support, customization, and enhancement of a large-scale Calypso environment used across Front Office, Middle Office, Risk, and Back Office functions.

The role also offers long-term project stability, exposure to complex financial products, and the possibility of future internalization with the client after a certain period of collaboration.

Responsibilities

  • Design, develop, and maintain Calypso customizations and integrations.
  • Support production and business-critical Capital Markets activities.
  • Collaborate with business stakeholders, analysts, support teams, and architects.
  • Develop Java-based solutions within the Calypso ecosystem.
  • Optimize performance, troubleshoot incidents, and implement enhancements.
  • Mentor junior team members and contribute to technical best practices.
  • Participate in system upgrades and strategic platform initiatives.

Qualifications

Requirements

  • 6+ years of software development experience.
  • Strong hands-on experience with Calypso.
  • Solid Java development background.
  • Experience with Oracle/SQL databases.
  • Understanding of Capital Markets and financial products.
  • Experience with integrations, APIs, messaging systems, or event-driven architectures.
  • Ability to work directly with business and technical stakeholders.
  • Fluent English: C1

Nice to Have

  • Experience in investment banking environments.
  • Calypso upgrade or migration projects.
  • Linux/Unix administration knowledge.
  • Exposure to DevOps and CI/CD practices.

Additional Information

What do we offer you?

  • Onsite set up in Wroclaw, Poland
  • Training and career development 
  • Benefits and perks such as private medical insurance, lunch pass card, MultiSport Plus card
  • Possibility to be part of a multicultural team and work on international projects 

If you are passionate about data, development & tech, we want to meet you!

Talan Spain’s commitment to non-discrimination based on gender, race, ideology, or any other reason, in accordance with the company’s "Equality Plan" and the current regulations on gender equality between women and men (Royal Decree-Law 6/2019).

  • Contract Type: Long term contract
  • Key Skills
    CalypsoJavaOracleSQLCapital MarketsFinancial productsIntegrationsAPIsMessaging systemsEvent-driven architecturesFront OfficeMiddle OfficeBack OfficeRisk managementMentoringSystem upgrades
    Categories
    TechnologySoftwareFinance & AccountingConsulting
    Benefits
    Private medical insuranceLunch pass cardMultiSport Plus cardTraining and career development
    Job Information
    📋Core Responsibilities
    The Senior Calypso Developer will design, develop, and maintain customizations and integrations within the Calypso environment for Capital Markets operations. They will also support production activities, troubleshoot incidents, and mentor junior team members to ensure system performance and stability.
    📋Job Type
    full time
    📊Experience Level
    5-10
    💼Company Size
    4684
    📊Visa Sponsorship
    No
    💼Language
    English
    🏢Working Hours
    40 hours
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