CrawlJobs Logo

Senior Software Engineer, Backend (Java)

smartrecruiters.com Logo

SmartRecruiters

Location Icon

Location:
Poland

Category Icon

Job Type Icon

Contract Type:
Not provided

Salary Icon

Salary:

Not provided

Job Description:

Our engineering team solves one of the most important problems of the modern economy - connecting great people with great jobs. We believe this problem can only be solved with technology, and we developed a software platform that has supported over 100M job seekers to date (with 5M joining every month). We are looking for a backend engineer to help us build the next chapter of that vision. We designed our R&D structure based on the empowered product teams model. It means our teams are responsible for business outcomes and have autonomy in solving problems in the way that “customers love yet work for the business”. Our technology platform is a SaaS product hosted on AWS. Our system is composed of hundreds of independent services orchestrated by Kubernetes. We build most of our services in Java, Javascript (Node.js), and Python. We have a strong CI/CD culture, and we currently run 40 production deployments per engineer per month.

Job Responsibility:

  • Contribute to a full life-cycle of the product (including problem discovery, prototyping, design, implementation, and measuring adoption)
  • Build services with Java / Node.js (Express, Nest.js) on top of Kubernetes/AWS infrastructure
  • Build developer-friendly RESTful APIs
  • Design and connect to our persistence layer (PostgreSQL, ElasticSearch)
  • Collaborate with other teams

Requirements:

  • Proven experience in designing, developing, and operating distributed systems
  • Experience in supporting end-to-end product lifecycle (from product discovery, solutioning, system design, implementation, production rollout, and optimization)
  • While not strictly required, we see that most of our Senior Engineers have 5+ years of professional experience
  • Deep command of the Java programming language
  • Hands-on experience with TDD, clean code, clean architecture principles, and effective code reviews
  • Strong domain modeling skills, including refactoring existing domains
  • Good understanding of persistence layer and RESTful API design
  • Solid understanding of distributed systems design (design for failure, eventual consistency, asynchronous communication, circuit breaking, timeouts, etc.)
  • Strong command of the English language, both written and verbal

Nice to have:

  • Experience with CI/CD pipelines and frequent deployments
  • Familiarity with AWS/GCP and Kubernetes/Docker
  • Proven ability to accelerate development using AI coding assistants
  • Hands-on experience building with modern LLM architectures such as Retrieval-Augmented Generation (RAG)
  • Ability to coach and mentor other engineers
  • Excellent collaboration and communication skills
What we offer:
  • Remote-friendly culture
  • Competitive salaries
  • Strong internal mobility
  • Meaningful growth opportunities
  • Inclusive work environment

Additional Information:

Job Posted:
January 10, 2026

Job Link Share:

Looking for more opportunities? Search for other job offers that match your skills and interests.

Briefcase Icon

Similar Jobs for Senior Software Engineer, Backend (Java)

Senior Backend Software Engineer

Atlassians can choose where they work – whether in an office, from home, or a co...
Location
Location
India , Bengaluru
Salary
Salary:
Not provided
https://www.atlassian.com Logo
Atlassian
Expiration Date
Until further notice
Flip Icon
Requirements
Requirements
  • 6+ years of experience building and developing backend applications
  • Bachelor's or Master's degree with a preference for Computer Science degree
  • Experience crafting and implementing highly scalable and performant RESTful micro-services
  • Proficiency in any modern object-oriented programming language (e.g., Java, Kotlin, Go, Scala, Python, etc.)
  • Fluency in any one database technology (e.g. RDBMS like Oracle or Postgres and/or NoSQL like DynamoDB or Cassandra)
  • Real passion for collaboration and strong interpersonal and communication skills
  • Broad knowledge and understanding of SaaS, PaaS, IaaS industry with hands-on experience of public cloud offerings (AWS, GAE, Azure)
  • Familiarity with cloud architecture patterns and an engineering discipline to produce software with quality
Job Responsibility
Job Responsibility
  • Build and ship features and capabilities daily in highly scalable, cross-geo distributed environment
  • Be part of an amazing open and collaborative work environment with other experienced engineers, architects, product managers, and designers
  • Review code with best practices of readability, testing patterns, documentation, reliability, security, and performance considerations in mind
  • Mentor and level up the skills of your teammates by sharing your expertise in formal and informal knowledge sharing sessions
  • Ensure full visibility, error reporting, and monitoring of high performing backend services
  • Participate in Agile software development including daily stand-ups, sprint planning, team retrospectives, show and tell demo sessions
What we offer
What we offer
  • health coverage
  • paid volunteer days
  • wellness resources
Read More
Arrow Right

Senior Backend Software Engineer

Location
Location
India , Bengaluru
Salary
Salary:
Not provided
https://www.atlassian.com Logo
Atlassian
Expiration Date
Until further notice
Flip Icon
Requirements
Requirements
  • 6+ years of experience building and developing backend applications
  • Bachelor's or Master's degree with a preference for Computer Science degree
  • Experience crafting and implementing highly scalable and performant RESTful micro-services
  • Proficiency in any modern object-oriented programming language (e.g., Java, Kotlin, Go, Scala, Python, etc.)
  • Fluency in any one database technology (e.g., RDBMS like Oracle or Postgres and/or NoSQL like DynamoDB or Cassandra)
  • Demonstrated ability to design and operate systems that deliver high availability and unwavering reliability for our customers
  • Real passion for collaboration and strong interpersonal and communication skills
  • Broad knowledge and understanding of SaaS, PaaS, IaaS industry with hands-on experience of public cloud offerings (AWS, GCP, Azure)
  • Familiarity with cloud architecture patterns and an engineering discipline to produce software with quality
Job Responsibility
Job Responsibility
  • Design, develop, and maintain robust backend systems and components focused on proactive and reactive incident management and post-incident management
  • Be part of an amazing open and collaborative work environment with other experienced engineers, process engineers, architects, and TPMs
  • Review code with best practices of readability, testing patterns, documentation, reliability, security, and performance considerations in mind
  • Leverage data to generate actionable insights that drive continuous improvements in backend performance and incident management processes
  • Mentor and level up the skills of your teammates by sharing your expertise in formal and informal knowledge sharing sessions
  • Ensure full visibility, error reporting, and monitoring of high performing backend services
  • Participate in Agile software development including daily stand-ups, sprint planning, team retrospectives, show and tell demo sessions
  • Fulltime
Read More
Arrow Right

Senior Backend Software Engineer

We're looking for a Senior Backend Software Engineer to join our team, focused o...
Location
Location
Poland , Gdańsk
Salary
Salary:
Not provided
https://www.atlassian.com Logo
Atlassian
Expiration Date
Until further notice
Flip Icon
Requirements
Requirements
  • 7+ years experience building and developing backend applications.
  • Senior-level experience with one or more prominent languages such as Java, Python, Kotlin, Go, or Scala is nice to have.
  • Understanding of SaaS, PaaS, IaaS industry with hands-on experience with public cloud offerings (e.g., AWS, GCP, Azure).
  • Fluency in any one database technology (e.g., RDBMS like Oracle or Postgres and/or NoSQL like DynamoDB or Cassandra).
  • Experience crafting and implementing well-tested, highly scalable and performant micro-services and/or other distributed systems.
  • Practical knowledge of agile software development methodologies (e.g., XP, scrum).
  • Knowledge to evaluate trade-offs between correctness, robustness, performance, space and time.
  • Practice in mentoring other engineers and influencing decision makers throughout the organization.
  • Considers the customer impact when making technical decisions.
Job Responsibility
Job Responsibility
  • Drive complex projects autonomously, from technical design to launch.
  • Solve complex architecture challenges, apply architectural standards and start using them on new projects.
  • Lead code reviews and documentation, and take on complex bug fixes, especially on high-risk problems.
  • Be an example for thorough, meaningful code reviews.
  • Partner across engineering teams to handle company-wide initiatives spanning multiple projects.
  • Transfer your depth of knowledge from your current language to excel as a Java developer.
  • Mentor junior members of the team.
What we offer
What we offer
  • Health coverage
  • Paid volunteer days
  • Wellness resources
Read More
Arrow Right

Scala Backend Software Engineer, Senior / Lead

To sustain the company's growth, Ledger is looking for new talents. You will sta...
Location
Location
France , Paris
Salary
Salary:
Not provided
https://www.ledger.com Logo
Ledger
Expiration Date
Until further notice
Flip Icon
Requirements
Requirements
  • Experienced engineer and continuous learner with 6+ years of relevant engineering experience
  • 2+ years of technical leadership experience, including effective communication of complex concepts and cross-team coordination to ship critical products
  • Advanced Scala proficiency
  • expert-level proficiency, and advanced mastery of a second backend language (e.g., Rust, Java, Python, PHP) is a plus
  • Excellent collaboration and communication skills
  • Experience collaborating closely with QA, product management, and key stakeholders to develop and deliver on a shared vision
  • Led development of complex, high-performance interactive browser applications, including architecture, infrastructure, and optimization
  • Experience with various web architecture patterns (e.g., Microservices, Event-Driven, P2P)
  • Ability to apply and adapt software engineering best practices to the engineering environment
  • Experience in the Web3 ecosystem and in a project involving blockchain fundamentals
Job Responsibility
Job Responsibility
  • Develop and maintain high-performance, resilient microservices and APIs to power Ledger's products, including integrations with staking, yield, DeFi services, and blockchain explorers
  • Contribute to the architecture, design, and implementation of scalable solutions, proactively identifying and addressing technical challenges
  • Ensure software quality through testing, documentation, and performance optimization, including monitoring and alerting systems
  • Enhance and maintain CI/CD pipelines to secure and streamline deployment workflows
  • Provide technical leadership and mentorship, collaborating across teams to deliver impactful projects and improve engineering standards
  • Drive innovation by identifying opportunities for improvement, contributing to a shared knowledge base, and participating in technical outreach
  • Manage projects effectively, respecting deadlines, priorities, and deliverables.
What we offer
What we offer
  • Equity: Employees are the foundation of our success, and we award stock options so you can share in that success as we grow
  • Flexibility: A hybrid work policy
  • Social: Annual company outing for Ledgerdary Days, plus frequent social events, snacks and drinks
  • Medical: Comprehensive health insurance policy offering extensive medical, dental and vision care coverage
  • Well-being: Personal development, coaching & fitness with our dedicated partners
  • Vacation: Five weeks of paid leave per year, in addition to national holidays and rest & relaxation (RTT) days
  • High tech: Access to high performance office equipment and gadgets
  • Transport: Ledger reimburses part of your preferred means of transportation
  • Discounts: Employee discount on all our products.
  • Fulltime
Read More
Arrow Right

Senior Backend Engineer (Java)

Endor Labs is on a mission to enhance developer productivity and accelerate open...
Location
Location
India , Bengaluru
Salary
Salary:
Not provided
https://www.endorlabs.com Logo
Endor Labs
Expiration Date
Until further notice
Flip Icon
Requirements
Requirements
  • Bachelor's degree in engineering with at least 6-8 years of experience in building scalable backends for product/SaaS companies
  • At least 4-years experience in Java programming
  • Proficiency with Maven and Gradle build tools
  • Familiarity with common Java frameworks, especially Spring Framework (Spring Boot, Spring Security, Spring Data etc.)
  • Strong understanding and experience with common unit testing and integration testing frameworks in the Java ecosystem (e.g., JUnit, Mockito, etc.)
  • Ability to discuss tradeoffs between architecture's choice to influence groups to move to the right direction
  • Able to enjoy working in a fast moving environment with evolving requirements
  • Ability to solve problems creatively and independently when in uncharted or unfamiliar territory
  • Practical experience in troubleshooting build/test failures and ability to solve root cause
  • Comfortable with performing and receiving code reviews, providing constructive feedback, and maintaining code quality
Job Responsibility
Job Responsibility
  • Be part of an engineering product team working on a distributed, monorepo-based system
  • Be directly involved in Endor Labs next major project endeavor
  • Address challenges by scaling and understanding the building, testing and releasing of thousands of Java legacy open-source software
  • Develop tools to streamline the automation of build, testing and release instructions of thousands of Java legacy open-source software
  • Provide expertise and implement reproducible, hermetic builds for Java
What we offer
What we offer
  • Strive for excellence in everything we do, prioritizing quality, speed, and impactful outcomes
  • Engage in first principles thinking to debate ideas, test assumptions, and make decisions
  • Put data above opinions, seeking truth and clarity in all our endeavors
  • Embrace a culture of feedback and continuous improvement, assuming good intent in all interactions
  • Celebrate wins as a team, understanding that our collective success is intertwined with the success of our customers
  • Fulltime
Read More
Arrow Right

Senior Backend Engineer

We are on the lookout for an Senior Backend Engineer with an engineering mindset...
Location
Location
India , Mumbai
Salary
Salary:
Not provided
https://clevertap.com/ Logo
CleverTap
Expiration Date
Until further notice
Flip Icon
Requirements
Requirements
  • 3+ years of experience in software engineering or a related field, including exposure to designing, developing, testing, and deploying data applications using Java
  • Organizational and time-management skills to meet project deadlines and ensure minimal errors
  • Proficiency in data structures, object-oriented programming (OOP) concepts, and Java
Job Responsibility
Job Responsibility
  • Supporting the development and maintenance of data pipelines, data APIs, and data storage solutions to meet the data science team's requirements
  • Assisting in optimizing data infrastructure for performance and reliability, implementing data security measures, and supporting the creation of reusable data processing code libraries
  • Working closely with the data science and product teams to gather requirements, estimate delivery timelines for specific data-driven features, and document technical specifications for development
What we offer
What we offer
  • Be a part of a global growth stage startup
  • Work in a fast-paced, dynamic environment where your contribution matters
  • You are passionate about technology and its impact on the high-growth mobile technology space
  • Innovate at scale, with learning opportunities
  • Fulltime
Read More
Arrow Right

Senior Software Engineer - Java Backend

We are looking for an engineering mindset which brings fresh ideas from various ...
Location
Location
India , Mumbai
Salary
Salary:
Not provided
https://clevertap.com/ Logo
CleverTap
Expiration Date
Until further notice
Flip Icon
Requirements
Requirements
  • 4 to 6 years of experience in back-end development (Designing, developing, testing and deploying large scale applications with one of the JVM languages or other server side technologies)
  • Strong organisational and time-management skills
  • Large capacity for attention to detail
  • Ability to meet communicated deadlines and release project with minimal bugs
  • Good knowledge of data structure, OOPs concepts and Java
Job Responsibility
Job Responsibility
  • write server side scripts, API’s to be utilised by front side engineers and also other microservices
  • optimising servers for speed and stability, implementing security structures, generating reusable code libraries and generating data storage solutions
  • involved with the product team directly in deciding the requirements, estimating delivery date for a particular feature and documenting the technical details for developing it
What we offer
What we offer
  • Be a part of a global growth stage startup
  • Work in a fast-paced, dynamic environment where your contribution matters
  • You are passionate about technology and its impact on the high growth mobile technology space
  • Innovate at scale, with learning opportunities
  • Fulltime
Read More
Arrow Right

Senior Software Engineer

We are recruiting a Senior Software Engineer for a Portuguese start-up company b...
Location
Location
Portugal , Leiria
Salary
Salary:
Not provided
https://www.precisers.pt Logo
Precise
Expiration Date
Until further notice
Flip Icon
Requirements
Requirements
  • 8+ years of experience in SW development
  • Languages (C, C++, Go, Python, Java)
  • Container orchestration (K8S) and creation
  • Pipeline creation and automation (CI/CD)
  • REST API development and backend development
  • SOLID principles, BDD, and TDD
  • Experience with cloud (at least 3 years)
  • Automation freak
  • Likes to participate in SW conferences and writing articles about technology
  • Fulltime
Read More
Arrow Right