Senior Java Developer

Job Location:

Prague - Czech Republic

Monthly Salary: Not Disclosed

Posted on: 27 days ago

Vacancies: 1 Vacancy

Job Summary

Location: Praha Czechia

Thales people architect identity management and data protection solutions at the heart of digital security. Business and governments rely on us to bring trust to the billons of digital interactions they have with people. Our technologies and services help banks exchange funds people cross borders energy become smarter and much more. More than 30000 organizations already rely on us to verify the identities of people and things grant access to digital services analyze vast quantities of information and encrypt data to make the connected world more secure.

Thales in the Czech Republic employs over 400 people from 45 different nationalities. A total of 15 teams work on projects for government agencies banking mobile services and the Internet Of Things (IoT) technology. At the core of our business is the development of software which we configure and embed in a multitude of different devices and form factors. These include many kinds of payment cards SIM cards travel passes secure eBanking devices authentication tokens machine identification modules (MIM) and secure ID documents including ePassports eID and eHealth cards as well as eDriving licenses. Because of the international environment surrounding us every day it comes as no surprise that English is our official corporate language.

Build security-critical backend system that millions of users rely on - with modern Java modern Spring and a team that ships owns and continuously improves the platform.

Were a product company in the cybersecurity/identity space. That means real engineering problems (security scale correctness reliability) real ownership (you build it you run it) and real influence (strong partnership with Product not ticket-taking).

Why this role is different

Modern stack by design: We stay on the newest Java LTS and the newest Spring Framework (security expectations make this non-negotiable - and its a great side effect for engineers).
Pragmatic testing: We value confidence over coverage. Integration-first where it matters. Minimal mocking. Tests that catch real issues.
Strong CI/CD culture: Automated pipelines multiple test layers fast feedback high signal.
True ownership: We deploy to production ourselves and own the full lifecycle.
AI-enabled engineering (for real): Company-backed initiative with tooling guidelines and people driving adoption - great opportunity to level up how you use AI effectively.
Voice and influence: Engineers are expected to speak up challenge solutions and improve the platform even beyond our team boundaries.

What youll do

Design and deliver backend services where security correctness and maintainability are first-class requirements.
Break down ambiguous high-impact problems into a clear plan and ship iteratively.
Collaborate closely with Product to craft solutions that are both technically sound and user-aware.
Improve platform-wide concerns: reliability observability performance developer experience and deployment safety.
Raise the bar through thoughtful code reviews pragmatic architecture decisions and knowledge sharing.

Our tech stack (high-level)

Java (latest LTS) Spring Framework (latest)
Kubernetes Helm Skaffold GitOps
AWS
CI/CD with extensive automated testing
Strong automation mindset across build deploy and operations

What were looking for

Must-haves

8 years of professional software engineering experience
Deep expertise in Java and strong hands-on experience with Spring
Excellent communication and collaboration skills
Fluent English (spoken and written)
Ability to work autonomously: you can take a big problem de-risk it and drive it to completion while pulling others in when needed
Strong engineering intuition: you challenge weak solutions avoid bare minimum and care about long-term quality

How you work

You like clarity but youre not blocked by ambiguity
You optimize for outcomes not just activity
You enjoy improving shared foundations (platform tooling patterns) not only your service

Bonus points (nice to have not required)

If you dont have these yet - curiosity and the willingness to learn matter more. Well help you grow through hands-on work with experienced engineers.

AuthN/AuthZ flows: OIDC OAuth2 MFA WebAuthn SAML SCIM
Interest in CIAM/IAM concepts: consent identity lifecycle federation credential management RBAC token-based security
Distributed systems / event-driven experience where scale availability and consistency matter
Observability & performance tuning: metrics/tracing JVM optimization load testing
Cryptography fundamentals: key management secure hashing TLS JWT signing
Multi-tenant architectures data isolation secure configuration management
IaC / DevOps: Terraform CloudFormation GitOps workflows
Balanced testing strategy: contract tests integration-first minimal mocking maintainable test suites

At Thales we provide CAREERS and not only jobs. With Thales employing 80000 employees in 68 countries our mobility policy enables thousands of employees each year to develop their careers at home and abroad in their existing areas of expertise or by branching out into new fields. Together we believe that embracing flexibility is a smarter way of working. Great journeys start here apply now!

Required Experience:

Senior IC

Location: Praha CzechiaThales people architect identity management and data protection solutions at the heart of digital security. Business and governments rely on us to bring trust to the billons of digital interactions they have with people. Our technologies and services help banks exchange funds ...

Location: Praha Czechia

Build security-critical backend system that millions of users rely on - with modern Java modern Spring and a team that ships owns and continuously improves the platform.

Why this role is different

Modern stack by design: We stay on the newest Java LTS and the newest Spring Framework (security expectations make this non-negotiable - and its a great side effect for engineers).
Pragmatic testing: We value confidence over coverage. Integration-first where it matters. Minimal mocking. Tests that catch real issues.
Strong CI/CD culture: Automated pipelines multiple test layers fast feedback high signal.
True ownership: We deploy to production ourselves and own the full lifecycle.
AI-enabled engineering (for real): Company-backed initiative with tooling guidelines and people driving adoption - great opportunity to level up how you use AI effectively.
Voice and influence: Engineers are expected to speak up challenge solutions and improve the platform even beyond our team boundaries.

What youll do

Design and deliver backend services where security correctness and maintainability are first-class requirements.
Break down ambiguous high-impact problems into a clear plan and ship iteratively.
Collaborate closely with Product to craft solutions that are both technically sound and user-aware.
Improve platform-wide concerns: reliability observability performance developer experience and deployment safety.
Raise the bar through thoughtful code reviews pragmatic architecture decisions and knowledge sharing.

Our tech stack (high-level)

Java (latest LTS) Spring Framework (latest)
Kubernetes Helm Skaffold GitOps
AWS
CI/CD with extensive automated testing
Strong automation mindset across build deploy and operations

What were looking for

Must-haves

8 years of professional software engineering experience
Deep expertise in Java and strong hands-on experience with Spring
Excellent communication and collaboration skills
Fluent English (spoken and written)
Ability to work autonomously: you can take a big problem de-risk it and drive it to completion while pulling others in when needed
Strong engineering intuition: you challenge weak solutions avoid bare minimum and care about long-term quality

How you work

You like clarity but youre not blocked by ambiguity
You optimize for outcomes not just activity
You enjoy improving shared foundations (platform tooling patterns) not only your service

Bonus points (nice to have not required)

If you dont have these yet - curiosity and the willingness to learn matter more. Well help you grow through hands-on work with experienced engineers.

AuthN/AuthZ flows: OIDC OAuth2 MFA WebAuthn SAML SCIM
Interest in CIAM/IAM concepts: consent identity lifecycle federation credential management RBAC token-based security
Distributed systems / event-driven experience where scale availability and consistency matter
Observability & performance tuning: metrics/tracing JVM optimization load testing
Cryptography fundamentals: key management secure hashing TLS JWT signing
Multi-tenant architectures data isolation secure configuration management
IaC / DevOps: Terraform CloudFormation GitOps workflows
Balanced testing strategy: contract tests integration-first minimal mocking maintainable test suites

Required Experience:

Senior IC

Apply Now

About Company

Thales

In all critical environments - air, land, sea, space and cyberspace - decision-makers, operators, crews and members of our armed services and security forces are faced with millions of important decisions every day. It is in supporting these people that Thales in the United States ha ... View more

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