Senior Back-End Developer

Talan Group; Warszawa; Hybrid; PLN 180,000 - 320,000; Full time

Benefits offered by this job

Smart Office Pack

Training and career development

Private medical insurance

Life insurance

Training and career development

Multicultural international projects

Job summary

A leading consulting firm in Poland is seeking a Senior Backend Developer to support and lead technological initiatives. The role involves designing and maintaining backend systems, mentoring junior developers, and applying best practices in software development. Candidates should have extensive experience in backend development within financial services and a strong command of modern architectures. The position is hybrid with competitive perks including private medical insurance and career development opportunities.

Qualifications

• 7+ years of experience in backend development with a focus on scalable solutions.
• Strong background in financial services and investment banking technology.
• Experience leading teams and implementing software development best practices.

Responsibilities

• Design, develop, and maintain backend systems for critical applications.
• Implement best practices in code quality and performance optimization.
• Mentor junior developers and foster high-performing teams.
• Collaborate with technical leads on modern backend architecture adoption.
• Accountable for execution teams inside the product: software delivery and best practices.

Skills

Backend development

Agile methodologies

DevOps practices

Cloud-native solutions

Data streaming technologies

Interpersonal communication

English proficiency

Investment banking domain

Education

Bachelor's degree in computer science or related field

Master's degree in finance, business, or data science

Fluent English, C2 desirable; Spanish or Polish proficiency asset

Tools

Kafka

Java

MongoDB

Elastic

Job description

Talan is an international consulting group specializing in innovation and business transformation through technology. With over 7,200 consultantsin 21 countriesand 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 empowermentto 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 revenuethis 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 initiativesthrough 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

As a Senior Backend Developer give support to the Technical Lead & Junior developers, you will be a trusted partner to the business in developing a roadmap to ensure the delivery of technology solutions. You will contribute to the transformation and growth by building high performing IT teams and continuously evolving the platforms that support our business.

We need somebody like you to help us in different fronts:

• Design, develop, and maintain backend systems and services to support mission-critical applications.
• Implement and enforce best practices in code quality, testing, CI/CD, and performance optimization.
• Mentor junior developers, fostering high-performing agile and DevOps teams.
• Work together our “technical leads” helping them in the adoption of modern backend architecture.
• You will be Accountable for execution teams inside the product: Software delivery, best practices

WHAT WE ARE LOOKING FOR

• Highly experienced Backend Developer with more than 7 years in IT, specializing in designing and implementing scalable backend solutions, optimizing technical processes, and leading development teams.
• Strong background in financial services and investment banking technology, with hands‑on expertise in modern backend architectures, data streaming, and cloud‑native solutions.
• Adept at translating business requirements into robust, secure, and efficient software systems.

Qualifications

EDUCATION

• Bachelor's degree in computer science, information systems, engineering, mathematics, or similar.
• Master's degree in finance, business or data science would be an asset.
• Fluent English, C2 desirable (work is largely in English) and fluency on Spanish or Polish would be an asset.

REQUIRED SKILLS:

• Experience working with Agile and DevOps delivery teams.
• Experience managing developers and implementing strategies on code review, pull requests, ....
• Knowledge of latest software architecture (e.g., public cloud, hybrid cloud, microservice architecture).
• Hands‑on experience with streaming big data technologies (Kafka streams, Java, MongoDB, Elastic).
• Strong interpersonal and proactive communication skills, ensuring transparency and alignment.

DESIRED SKILLS:

• Knowledge of Investment Banking Products and Wholesale Banking.
• Ability to organize team and prioritize tasks within the sprint.

Additional Information

What do we offer you?

• Full‑time contract.
• Smart Office Pack so that you can work comfortably from home.
• Training and career development.
• Benefits and perks such as private medical insurance, life insurance.
• Possibility to be part of a multicultural team and work on international projects.
• This is a hybrid position based in Warsaw, Poland.
• Possibility to manage work‑permits.

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

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