Jobs Java

• Project Description:

  For the world most global bank we are building the platform, which supports various information gathering and processing across the organization and providing access to this data

   

• Responsibilities:

  Candidate will be responsible for building out the firm's strategic reference data platforms to serve businesses within client company. The successful applicant will take ownership of key projects and components and will be responsible for all phases of SDLC including analysis and design, development, testing and deployment. As a developer, the candidate will be responsible for developing & deploying technical solution following engineering excellence standards. A potential candidate will need to understand system and enterprise architecture concepts and will be expected to understand how all components fir together and impact one another. They will work with a global and diverse team of peers as well as liaise closely with Business Analyst, Production Support, and infrastructure teams.
  
  Responsibilities:
  - Deliver assigned development projects withing agreed schedule, quality and scope expectations
  - Participate in all stages of SDLC within an agile Scrum environment
  - Form partnership with technology vendors and gain deep understanding of products
  - Enhance/Re-architect existing components to satisfy new requirements in terms of performance and scalability
  - Provide level 3 (escalation) support for the application

   

• Mandatory Skills Description:

  - At least 7+ years of experience with Java
  - Experience/understanding with the following technologies:
  - Java (Core, JDBC, MT, Collections, I/O), Spring Boot
  - SQL.PL-SQL on Oracle DB
  - Container platform based on Kubernetes
  - REST web services, Kafka, Redis
  - Unix Commands and shell scripting.
  - Familiarity with standard data structures and algorithms.
  - Experience using the following tools - JIRA, Harness/uDeploy, SonarQube, TeamCity, Artifactory, Git (GHE & Bitbucket)
  - Logical thinking, strong analytical and problem-solving skills; innovate and solutions oriented
  - Effective time management skills to manage multiple priorities with flexibility on time zones and timelines
  - Excellent verbal and written communication skills
  - Bachelor's degree in computer science or equivalent work experience

   

• Nice-to-Have Skills Description:

  - Master's degree in computer science or equivalent work experience
  - Experience working with the Scrum methodology
  - Experience working with a NoSQL database
  - Experience designing and implementing microservices
  - Financial services technology experience preferably in reference data domain
  - Physical and logical data modeling

   

• Languages:
  • English: C1 Advanced

• Recruitment process:
  1) CV Review — the project team reviews your experience and its relevance to the position.
  2) Technical Interview — a technical discussion with our interviewer.
  3) Project Management Interview (PMI) — a discussion about your experience, communication, and project fit.
  4) Karat Interview — the first technical interview with the client.
  5) Client Interview — the final interview with the client’s project team.

Job Description

• Readiness to work in shifted working hours: till 12 AM Kyiv time (2 PM PST time)
• 4+ years of professional software development experience
• Proficiency in server-side programming languages, especially Java
• Professional experience with Java based web services and RESTful framework, and both relational and non-relational database platforms
• Experience with large scale distributed system architecture
• Ability to trace through various services and determine root cause when issues occur
• Knowledge of Software Development Lifecycle and Agile Development/Testing practices and methodologies
• Familiarity with CI/CD methodologies
• Experince with Cloud Services (AWS) is a plus
• Excellent communication and collaboration skills
• Strong teamwork ethic, with demonstrated ability to work independently as well as a team-focused approach towards software development
• Ability to lead small projects and platform initiatives

Job Responsibilities

• Work as part of the Client team
• Participate in stand-ups and other sprint meetings
• Design and implement new solutions
• Optimize and enhance existing services
• Document changes and new features
• Perform code reviews
• Deliver code with thorough automated testing
• Drive releases to production

Department/Project Description

About Project:

Comprised of the Company’s international business units and various direct-to-consumer streaming services, Media & Entertainment Distribution department aligns technology, media distribution and advertising sales into a single business segment to create and deliver personalized entertainment experiences to consumers around the world.

GL team will be concentrated on building AdTech platform for our customer.

About Company:

Leading diversified international family entertainment and media enterprise with the following business segments: media networks, parks and resorts, studio entertainment, consumer products and interactive media.

Project Description

Harmonic is the worldwide leader in virtualized broadband solutions. We revolutionized broadband networking via the industry’s first virtualized broadband solution, enabling cable operators to more flexibly deploy gigabit internet service to consumers’ homes and mobile devices.

Job Description

- B.Sc. in Industrial Engineering, Information Systems, Computer Science, Engineering, or equivalent.
- 5+ years of experience as an Atlassian expert (full-time support of Jira, Confluence and Bitbucket DC/Cloud) in large organizations.
- Understanding of system administration principles (Monitoring, Network, Storage, Scripting).
- Strong and confident experience with ScriptRunner for Jira, including extensive use of Listeners, Scripted Fields, Behaviors, and Fragments at an advanced level (working with all kinds of Jira Software, Issues, Issue Links, Directory, APIs, etc.).
- Extensive knowledge of project management/administration, permissions, workflows complex customizations, UI elements.
- Advantage: Extensive knowledge of eazyBI Reports and Charts for Jira, with the ability to develop new MDX queries, provide a wide range of new formulas to develop KPI, SLA, Agile, productivity, and prediction reports, and manage several eazyBI accounts with different permission ranges.
- Ability to work independently and solve problems with speed and efficiency, taking responsibility for the results.
- Ability to balance user requests and business needs against established best practices.
- Ability to collaborate with technical and non-technical teams to optimize workflows.
- Strong communication skills (verbal and written), time management skills, fast learner, and self-motivated.
- Advanced verbal and written English skills – Mandatory.

Job Responsibilities

- Maintain and administer various Atlassian tools used by the organization (Jira DC and Cloud, JSM Cloud, Confluence Cloud, Bitbucket DC, and OpsGenie).
- Maintain the AWS infrastructure for our DC Atlassian products.
- Provide support and advanced troubleshooting for the entire user base.
- Partner with cross-functional teams to design and implement solutions that empower their day-to-day work while adhering to industry best practices.
- Manage user permissions according to the needs of spaces and teams.
- Serve as a trusted escalation point for our services team and customers.
- Design, document, and implement advanced scripts (Groovy/Java, ScriptRunner, Automation for Jira, etc.) and perform meaningful code reviews for your peers.
- Develop new ScriptRunner scripts or update/optimize/fix existing ones.

🎰 Senior Java Engineer: Build the Wallet Behind Millions of Players

Adaptiq × a major online gaming operator

The challenge:

Picture a platform where millions of players hit "play" at the same moment, every action moves real money, and the answer must come back in under a second. Now picture building it from scratch.

That's the PAM (Player Account Management) platform: real-time financial transactions, strict regulation, zero tolerance for lost cents, and traffic spikes that would make most systems sweat. No legacy code to inherit. Just a blank page and hard problems.

Your role:

You'll design and build the core backend of the platform and own your features end-to-end: from RFC to production monitoring. You'll work side by side with Principal Engineers, with real autonomy and real influence on the architecture.

What you'll do:

• Build services in Java 17+ / Spring Boot for wallets, ledger, payments, bonuses, and account state
• Create REST APIs and Kafka-based event flows for frontends, ops tools, and partners
• Make correctness non-negotiable: idempotency, clear transaction boundaries, failure handling, solid testing
• Bake in compliance: KYC/AML, responsible gaming, audit trails
• Keep production healthy with metrics, tracing, alerts, and on-call
• Shape the platform through RFCs and code reviews, and mentor teammates
• Work with AI-assisted tools daily

• Help migrate live from the existing third-party platform (parity testing, data validation, cutover)

   

What you bring:

• 5+ years in backend engineering, with strong Java 17+ and Spring Boot
• Experience with high-integrity transactional systems: payments, wallets, billing, banking, e-commerce, or gaming
• Deep PostgreSQL (or similar) knowledge: schema design, ACID, locking, tuning
• Event-driven architecture experience (Kafka, RabbitMQ), including idempotency and retries
• Automated testing as a habit: unit, integration, contract
• Hands-on production experience with containers, CI/CD, observability, and incident troubleshooting
• Solid grasp of multi-threading and fault-tolerant design

• Good English and comfort working across time zones

   

Bonus points:

✦ iGaming, betting, or fintech background
✦ Kubernetes and AWS (VPC, IAM, EKS, auto-scaling)
✦ Compliance-driven development experience
✦ Agentic development workflows
 

If you want your code to handle real money, real scale, and real responsibility, let's talk.

About Our Client:

Our client is a leading enterprise data platform company building an open, high-performance data lakehouse for AI and analytical workloads. The platform combines an intelligent SQL query engine, an AI-ready semantic layer, and an open catalog built on Apache Iceberg — enabling Fortune 500 companies across finance, energy, manufacturing, and logistics to unify, query, and govern data at massive scale across cloud and on-premise sources.

About the Role:

We are looking for a Senior Software Engineer for the team that owns the reliability and operational excellence of a large-scale data platform, delivered both as a cloud service and as self-managed software. You will work across the full platform — observability, security, control plane, and core services — diagnosing complex issues and delivering durable fixes across cloud, hybrid, and on-premises environments, in close collaboration with product engineering, SRE, support, and field teams.

This is a backend platform engineering role focused on distributed systems reliability — not application development or CRUD services.

Responsibilities:

• Investigate, diagnose, and resolve complex issues across cloud and self-managed deployments — distributed systems failures, performance degradation, and reliability incidents
• Own bug fixes and targeted improvements across core services, control plane, security, and observability infrastructure
• Support automated deployment and integration frameworks that enable consistent, repeatable delivery across cloud, hybrid, and on-premises environments
• Contribute to cluster lifecycle management, observability, and operational supportability capabilities
• Partner with SRE, support, and field teams to triage and resolve escalated customer issues
• Build runbooks, root cause analyses, and internal tooling that reduce time-to-resolution over time
• Collaborate with product engineering so that fixes are integrated back into the main codebase effectively.

Required Qualifications:

• Bachelor's or Master's degree in Computer Science or a related field, or equivalent experience
• 5+ years of software engineering experience with strong hands-on Java development at production scale
• Proficiency in Python and Bash for scripting, automation, and tooling
• Solid foundation in data structures, algorithms, and multi-threaded / asynchronous programming models
• Experience designing, debugging, and operating large-scale distributed systems or microservices
• Hands-on experience with Kubernetes and Docker across cloud, hybrid, or on-premises deployments
• Cloud-native development experience on one or more of AWS, Azure, or GCP
• Strong understanding of networking fundamentals (TCP/IP, DNS, HTTP)
• Clear communicator — able to explain problems, root causes, and solutions to technical and non-technical audiences
• Comfortable with AI-assisted development workflows — using modern AI tools productively while critically validating their output
• English Upper-Intermediate or higher (B2+) — daily written and verbal communication with a US-based engineering team
• Availability to work EU business hours shifted 2–3 hours later for daily overlap with US West Coast mornings.

Desired Skills:

• Observability platforms: OpenTelemetry, distributed tracing, metrics, logging
• Background in data processing, data warehouse, data lake, or analytics systems
• Distributed file and object storage: S3, ADLS, or HDFS
• Infrastructure-as-code (Helm, Terraform) and CI/CD tooling (Jenkins, ArgoCD)
• Identity, authentication, and authorization systems: SSO, OAuth, SAML, RBAC
• NoSQL databases (MongoDB, RocksDB), Redis, or partner/OEM integration patterns
• Query processing, concurrency control, data replication, or storage systems.

Details:

• Engagement: Long-term contract
• Location: Europe (EU / EEA / UK), remote
• Working hours: EU business hours, shifted 2–3 hours later for daily overlap with the US West Coast team

About B2Spin
We are B2Spin, and we are dedicated to delivering the best Free-to-Play Social Casino and gaming experiences by creating captivating, engaging, and unique products that are accessible to everyone. We have built a team of talented professionals from all over the globe, who are working to continually improve the experiences of our players. We are not looking to just be part of the industry, but to revolutionize it.

AI-Driven Engineering Culture
We are actively building an AI-driven engineering organization with a clear and deliberate stance: artificial intelligence is a core part of how we build and deliver software — not an experiment, not a trend, and not an optional add-on.
AI is embedded into our engineering workflows, from system design and prototyping to refactoring, testing, and code review. We expect engineers to be fully comfortable working in AI-driven environments and to treat AI as a primary productivity multiplier. Strong engineering judgment, architectural ownership, and accountability remain essential—AI amplifies our engineers, it doesn’t replace responsibility for technical decisions.

The Role
You’ll be building and maintaining mission-critical payment systems that handle massive scale and directly impact millions of users worldwide.

What you will be doing
• Write well-designed, testable and scalable code in a timely manner
• Take part in the full development cycle from sprint planning to release cycles
• Ensure smooth development and cooperation between dev teams and product owners
• Build and maintain high-load systems that handle massive scale
• Troubleshoot production issues using metrics, alerts, monitoring and profiling
• Contribute to seamless scaling and automation initiatives

What we are looking for
• Strong Java Core expertise (Java 8+) with proven track record in enterprise environments
• Deep expertise in multithreading and high-load systems architecture
• Solid SQL knowledge and database optimization skills
• Strong experience with Docker and containerization ecosystem
• Excellent troubleshooting skills with production monitoring tools
• Strong English communication skills in speaking and writing

Bonus points for: Experience with Clickhouse, GCP, Kafka ecosystem, ElasticSearch, Ebean, Protobuf, InfluxDB/Grafana, Google Services integration, SPA and modern mobile/web technologies, or fintech experience.

Main technologies: Java, Spring, Spring Boot, Ebean-ORM, Quartz, Maven, Resteasy, Flyway, PostgreSQL 15, HTTP/Websockets, Netty, K8S/Docker, GCP, Jenkins, ELK, Grafana

Why you will love it
You’ll be at the forefront of AI-driven engineering in a fast-scaling environment where your code directly impacts millions of users. Work with cutting-edge technology (latest Java, Spring Boot, GCP, Kubernetes) while enjoying full remote flexibility, generous leave, and real opportunities for growth. Join a team that treats AI as a core engineering tool—not an experiment—and where engineering excellence, speed, and meaningful impact are part of everyday work.

Project Responsibilities

Design, develop, and maintain backend services and APIs for integrations with external partners. 
Develop reliable and scalable integration solutions using Java and Spring Boot. 
Integrate third-party APIs and services, including authentication, data transformation, validation, and error handling. 
Participate in the design of microservice-based integration architecture and contribute to technical decisions. 
Implement monitoring, logging, exception handling, and mechanisms for ensuring integration reliability. 
Write unit and integration tests and participate in code reviews to maintain high development standards. 
Collaborate with mobile developers, QA engineers, DevOps specialists, product teams, and external partners. 
Investigate and resolve integration issues, production incidents, and performance problems.

Must-haves

Commercial experience in Java development, with strong knowledge of object-oriented programming. 
Strong experience with Spring Boot, Spring Framework, and development of RESTful APIs and backend services. 
Solid understanding of microservices architecture, distributed systems, and integration patterns. 
Practical experience with SQL databases such as PostgreSQL, Oracle, or MySQL, including query optimization. 
Experience working with external APIs and third-party integrations, including REST, JSON, authentication, and data mapping. 
Good knowledge of messaging technologies such as Kafka, RabbitMQ, or similar solutions. 
Experience with Git, CI/CD pipelines, Docker, and modern development practices. 
Understanding of software development best practices, clean code, design patterns, unit testing, and code review processes.

We are looking for a Senior Java Full Stack Engineer with React to join our team!

Our client is one of the world's largest fashion retailers, selling in 215 markets through its online platform or its 6,477 stores in 95 markets. We work closely together as a single company globally focused on the key elements of fashion production – design, manufacture, distribution, and retail. All production is founded on three pillars – flexibility, digital integration, and sustainability.

Responsibilities:

• Participate actively and constantly in the design and development of APIs
• Ensure the availability and resilience of services that help the development of the company’s business.
• Ensure the quality of development and code cleanliness (Clean Code)
• Continuously perfect our style guides, design, and code patterns as well as our React component library
• Implement the scripts for the automation of the test cases.
• Automatic and manual exploratory execution during development to verify that the acceptance criteria are covered.
• Maintain and evolve automated test cases with QA.
• Work in close contact with the Product Owner and support the technical definition of product backlog items
• Guarantee continuous deployment; write qualitative, maintainable code with extensive test coverage in a fast-paced professional software engineering environment
• Suggest technical and functional improvements to add value to the product

Requirements:

• 5+ years of extensive Java development experience, Maven
• 2-3 years of Spring Framework and building Spring web applications
• Understanding and experience developing and deploying microservices
• Experience developing REST interfaces, OpenAPI
• Frontend testing and performance optimization
• CSS3/SCSS/HTML5, modern responsive design techniques
• Extensive experience with ES6, React, Redux, Redux-Saga, TypeScript, CSS, RESTful APIs
• Excellent design, coding, and debugging skills
• OOP, OOD, DDD. Proficient in design patterns
• Working knowledge of relational databases, NoSQL technologies – MongoDB
• Working knowledge of Kafka, Kafka streaming (can be optional)
• Experience with different clouds – AWS, Azure
• Working knowledge of OpenShift, Kubernetes
• Familiar with Graylog, Grafana
• Working experience in an Agile environment, a clear understanding of the Agile methodology mindset, and development practices applicable to it
• Excellent communication, organizational, and facilitation skills, product-oriented mindset, focus on team results, willingness to continuous personal and team improvements, leadership qualities, and resilience.
• Upper-Intermediate/Advanced English level (there will be a lot of communication with the client)

We offer:

• Flexible working format - remote, office-based or flexible
• A competitive salary and good compensation package
• Personalized career growth
• Professional development tools (mentorship program, tech talks and trainings, centers of excellence, and more)
• Active tech communities with regular knowledge sharing
• Education reimbursement
• Memorable anniversary presents
• Corporate events and team-building

We build a payment-orchestration platform (PSP hub) that connects merchants to dozens of payment providers. You'll join one of two small backend teams (5 developers each — seniors, a Tech Lead, and an Architect) building and maintaining integration services that process real financial transactions in production.

You'll work alongside experienced engineers and strong QA, but we’re looking for someone who can already work independently on well-defined Java backend tasks and take ownership of their code from implementation through testing and review.

• Format: Remote · Full-time
• Level: Junior+ — 1–2 years of recent commercial Java development experience

• English: B1+ (tooling, documentation, and some partner communication are in English)

   

What you'll be working with

• Java 25, Spring Boot, Apache Camel
• REST APIs, SQS, Redis, PostgreSQL
• Cloud & DevOps: AWS, EKS, Terragrunt, Helm, Flux
• Monitoring: OpenSearch, VictoriaMetrics, Grafana

• GitLab & CI/CD

   

What we're looking for — essentials

• 1+ year of recent commercial Java development experience
• Strong Java Core fundamentals and OOP
• Hands-on commercial experience with Spring / Spring Boot
• Practical experience with REST APIs
• Experience working with SQL / PostgreSQL
• Ability to read, understand, debug, and modify an existing Java codebase
• Experience writing unit and/or integration tests
• Understanding of the standard development flow: task → implementation → code review → testing → release
• Ability to work independently on well-defined tasks, ask the right questions, and take ownership of the result

• Good communication and ability to work effectively within a development team

   

Nice to have

• External API / third-party integrations
• Payment / fintech / PSP experience
• Apache Camel
• SQS, RabbitMQ, Kafka or other message queues
• Docker / Kubernetes / Helm
• AWS
• GitLab or other CI/CD tools
• Redis

• Keycloak 26

   

What you'll do

• Build and maintain Java backend services and provider integrations
• Work with and extend an existing production codebase
• Develop and integrate REST APIs and external services
• Write clean, tested, maintainable code
• Debug production issues and improve service stability
• Participate actively in code reviews
• Take ownership of assigned tasks from implementation through testing and release
• Collaborate with Backend, QA, DevOps, Product, and Architecture

How we work / what we offer

• Flexible remote schedule
• Paid sick leave and vacation
• All the equipment you need
• Internal events: open discussions, product meetups, soft-skills training
• Flat structure, no micromanagement, fast decisions

• Experienced engineers around you for code reviews, technical discussions, and mentorship

   

Hiring process

1. Intro call (~30 min)
2. Technical interview
3. Live coding / code-reading & modification session

4. Offer

    

Ready to work on real production systems, take ownership of your code, and grow into a strong Java backend engineer? Join us.

We are looking for a Senior Full Stack Engineer with a strong frontend focus (React + Java) for our partner, a growing software company based in Spain.

Our partner combines product development with client-facing engineering work, delivering software solutions for enterprise customers.

You will join a team working on a live production product for a large US healthcare enterprise. The platform is currently undergoing a significant architectural modernization: an existing Ruby middleware layer is being removed, allowing the React frontend to communicate directly with the core Java APIs, while the system is also moving toward a more secure access architecture.

The role is primarily focused on React and frontend engineering, while requiring the ability to work across the stack with Java and Spring Boot when needed.

The project has an important upcoming release, so we are looking for an experienced engineer who can understand an existing production system and become productive quickly.

This is a full-time remote contract position with an initial commitment of at least six months and the possibility of long-term extension.

Responsibilities

* Design, develop, and maintain production frontend applications using React and TypeScript.

* Build scalable, reusable, and maintainable frontend components and application architecture.

* Contribute to the migration away from the existing middleware layer and integrate the React application directly with Java APIs.

* Deliver end-to-end product features across the React frontend and Java/Spring Boot backend when required.

* Work with REST APIs and complex backend integrations.

* Participate in the platform’s migration toward a more secure and modern access architecture.

* Contribute to frontend architecture, technical design, performance, and code quality decisions.

* Understand and improve an existing production codebase while maintaining stability.

* Work with AWS-based production environments.

* Collaborate closely with backend engineers, QA, and other members of the product team.

* Participate in Agile ceremonies and planning activities.

* Use AI-assisted development tools as an integral part of the engineering workflow.

Requirements

Technical Skills

* 6+ years of professional software engineering experience.

* Strong hands-on experience with React and TypeScript.

* Strong understanding of modern frontend architecture, component design, state management, performance optimization, and API integration.

* Professional experience with Java and Spring Boot and the ability to contribute to backend development.

* Proven experience building and maintaining production-grade web applications.

* Strong experience integrating frontend applications with REST APIs and backend services.

* Experience working with existing production systems and complex codebases.

* Hands-on experience with AWS and cloud-based production environments.

* Experience with Docker, CI/CD pipelines, and modern cloud-native development practices.

* Solid understanding of software architecture and system design.

* Ability to ramp up quickly and work effectively within an established engineering environment.

AI & Modern Engineering Expectations

* Strong hands-on experience using AI-powered development tools such as Claude Code or similar as part of the day-to-day engineering workflow.

* Up-to-date understanding of modern AI capabilities and their practical application in software development.

* Ability to use AI tools to accelerate development, improve code quality, support technical decisions, and increase engineering productivity.

* Experience with Spec-Driven Development (SDD) or similar methodologies that enable AI-native development workflows.

* Ability to identify opportunities where AI can add meaningful value to the product and its users.

* Comfortable working in an engineering environment where AI-assisted development is an integral part of the software development lifecycle.

Communication

* English level B2 or higher.

* Ability to communicate technical concepts clearly to both technical and non-technical stakeholders.

* Strong written communication and documentation skills.

* Comfortable working within distributed international teams.

Personal Qualities

* Strong ownership mentality and proactive approach.

* Ability to understand an existing system and become productive quickly.

* Ability to identify issues early and drive solutions independently.

* Open-minded and adaptable when evaluating technologies and approaches.

* Focus on code quality, maintainability, and long-term sustainability.

* Collaborative attitude and strong teamwork skills.

About Our Client:

Our client is a leading enterprise data platform company building an open, high-performance data lakehouse for AI and analytical workloads. The platform combines an intelligent SQL query engine, an AI-ready semantic layer, and an open catalog built on Apache Iceberg — enabling Fortune 500 companies across finance, energy, manufacturing, and logistics to unify, query, and govern data at massive scale across cloud and on-premise sources.

About the Role:

We are looking for a Middle-level Software Engineer to work on the core query engine of a large-scale distributed data platform. You will develop features across query planning, optimization, and execution, contribute to performance-critical components, and help investigate and fix production issues reported by real enterprise customers.

This is a systems-level, backend engineering role focused on distributed data processing internals — not application development or CRUD services.

Responsibilities:

• Develop and maintain features across the query engine — planning, optimization, execution, and data access layers
• Write performance-conscious code in Java and/or C++
• Investigate and fix production and customer-reported issues under the guidance of senior engineers, including fixes delivered across multiple supported release lines
• Work with SQL semantics, query plans, and execution operators over large-scale distributed data
• Integrate with columnar formats, open table formats, and connectivity drivers
• Contribute to CI/CD and automated testing in Jenkins
• Deploy and validate changes on Kubernetes (GKE/EKS/AKS) across GCP, AWS, or Azure with Docker
• Debug issues across query planning, distributed execution, memory management, and I/O; collaborate with US-based teams on design and code reviews.

Required Qualifications:

• B.S. or M.S. in Computer Science, Computer Engineering, or a related field
• 3+ years in backend / systems software engineering
• Strong proficiency in Java or C++ with solid OOP and software design fundamentals, including concurrency and asynchronous programming (comfort with both languages is especially valued)
• Strong SQL and understanding of relational and analytical data systems, including query execution concepts
• Hands-on experience with data processing systems: query engines, distributed databases, ETL/ELT, or analytical platforms
• Experience with Jenkins pipelines and modern development workflows
• Docker and basic Kubernetes (running workloads, debugging pods, kubectl fluency)
• Hands-on experience with at least one major cloud (GCP, AWS, or Azure)
• Confident Git/GitHub workflows
• Comfortable with AI-assisted development workflows — using modern AI tools for code comprehension, debugging, and test generation, and critically validating their output
• English Upper-Intermediate or higher (B2+) — daily written and verbal communication with a US-based engineering team
• Availability to work EU business hours shifted 2–3 hours later for daily overlap with US West Coast mornings.

Desired Skills:

• Apache Arrow (columnar in-memory format) and SQL planner/optimizer frameworks such as Apache Calcite
• LLVM-based runtime expression compilation
• Open table formats — Apache Iceberg, Delta Lake, or Hudi — and columnar file formats such as Parquet, Avro, or ORC
• MPP query engines (Presto, Trino, or similar); exposure to distributed data platforms such as Spark, Snowflake, or Databricks
• Messaging systems: Kafka, NATS, or cloud pub/sub services
• Query planning, optimization, and execution internals
• Connectivity drivers: JDBC, ODBC, Arrow Flight
• Managed Kubernetes (GKE/EKS/AKS), multi-cloud exposure; Terraform
• Performance profiling of latency-sensitive systems.

Details:

• Engagement: Long-term contract
• Location: Europe (EU / EEA / UK), remote
• Working hours: EU business hours, shifted 2–3 hours later for daily overlap with the US West Coast team

About the Project

You'll join our client's team working on a live, production B2B SaaS platform in the sales/revenue operations space — including pipeline management, sales process configuration, risk alerting, and role-based analytics.

The client's product is fully launched and actively used in production. It runs on AWS, uses enterprise SSO (OAuth2/OIDC), and integrates with an external data platform.

This is not a greenfield project — you'll be working with an established codebase and existing engineering practices, including automated testing, pre-commit hooks, and CI enforcement. Your focus will be on extending backend functionality, improving architecture, and further strengthening the platform.

Responsibilities

• Build, maintain, and extend backend functionality using Java and Spring Boot
• Design and develop REST APIs and backend integrations
• Work within and help enforce a hexagonal / DDD-oriented architecture, keeping domain logic decoupled from framework and persistence concerns
• Raise automated test coverage across domain and application layers and maintain a strong testing culture
• Help introduce architecture-conformance checks, such as ArchUnit, to enforce dependency boundaries
• Contribute to migrating backend dependencies from early-access or milestone releases to stable GA versions as part of ongoing platform hardening
• Maintain and extend OAuth2/OIDC-based authentication and role-based access control
• Work with PostgreSQL, database schema evolution, and Flyway migrations
• Maintain integrations with external data platforms, including Databricks
• Strengthen secrets and credentials management across the codebase and CI/CD

• Participate in code reviews, technical design discussions, troubleshooting, and production incident response

   

Requirements

• 5+ years of professional backend development experience
• Strong production experience with Java and Spring Boot
• Strong understanding of REST API design and backend architecture
• Hands-on experience with Spring Security and OAuth2/OIDC flows
• Strong PostgreSQL experience and knowledge of schema migration tooling such as Flyway
• Experience with AWS
• Strong testing discipline with JUnit 5 and Testcontainers
• Experience with Docker and container-based deployment, ideally AWS ECS/Fargate or equivalent
• Comfortable working with or refactoring toward hexagonal, clean, or DDD-oriented architecture
• Understanding of CI/CD and production engineering practices
• English — Upper-Intermediate or higher

Nice to Have

• Experience with AWS Secrets Manager and cloud secrets management
• Experience integrating with data platforms such as Databricks
• Experience with ArchUnit or similar architecture-enforcement tooling
• Experience modernizing or hardening mature production codebases
• Experience migrating framework or library dependencies from early-access versions to stable GA releases
• Experience with monitoring and observability tools such as Datadog

We are looking for a Senior Software Developer to join a long-term project for one of our enterprise clients. You will work on building and scaling monitoring applications for critical energy infrastructure.

• Start Date: October 26, 2026

• Duration: ~1 year (until October 30, 2027)

   

  What You Will Do

• Develop and maintain core backend logic for energy monitoring applications (approx. 80% Python / 20% Java).
• Build high-performance REST APIs and microservices using FastAPI and Spring Boot (JDK 21+).
• Implement asynchronous event streams and data messaging workflows with Apache Kafka.
• Configure and deploy application manifests using Helm Charts and containerization tools.
• Collaborate actively in an Agile environment (Scrum or Kanban) to ensure stable delivery.

     What We Are Looking For

Core Requirements:

• 5+ years of commercial experience in IT solution development.
• Python Expertise: Strong hands-on experience with FastAPI, Kafka, and Helm Charts.
• Java Competency: solid background with Spring Boot, JDK 21+, and Maven.
• Proven experience working in Agile software development teams (Scrum or Kanban).
• Upper-Intermediate+ English communication skills (written and spoken).

Nice to Have:

• DevOps & Tooling: Kubernetes, Argo CD, Protobuf, Pydantic, Grafana.

Domain Experience: Background in the Energy sector, SCADA, PMU, Power Quality, or critical infrastructure systems.

     Tech Stack

• Core: Python, FastAPI, Java, Spring Boot (JDK 21+), Kafka, Helm Charts, Maven
• Ecosystem / Infrastructure: Kubernetes, Argo CD, Protobuf, Pydantic, Grafana

     How to Apply / Submission Details

If you are interested, please submit the following details before the deadline:

1. CV in PDF or Word format.
2. Hourly rate (in EUR/USD).
3. Current location.
4. Earliest availability / notice period.

📌 Application Deadline: October 5, 2026 (inclusive)

Location: Remote, EU
Duration: Longterm
Workload: Fulltime 40 hrs
Start: ASAP
Languages: English (min. B2). German (min. C1)
Interview rounds: 2-3
Location: Remote, office possible

Responsibility for mission-critical banking systems: help build the next generation of cloud-native banking software.
You'll work with Spring, microservices and Kubernetes on systems that banks rely on, and actively shape both architecture and product.
Our client develops cloud-native banking software and is looking for a Software Developer to strengthen its development team.

Overview

• Location: Remote, office possible
• Working hours: Full-time, 40 hours per week, flexible scheduling
• Focus: Java, Spring, microservices, Kubernetes

Your responsibilities

• Further development of existing microservices, plus analysis, design and implementation of new features together with product management
• Making and justifying architecture decisions as a team
• Code reviews and technical onboarding of new team members
• Creating and maintaining automated tests
• Active support in the deployment process

Your profile

• Professional experience as a software developer in product development
• Very good knowledge of Java and the Spring Framework
• Understanding of banking processes
• Fluent German (C1) in speech and writing, as technical coordination within the team, with product management and with customers is usually conducted in German
• Experience with agile software development
• Experience with cloud-native environments

About Us

Smart Capital Center is an end-to-end, AI-powered platform for Commercial Real Estate (CRE) investment and financial management. We power real-time underwriting, asset management, and portfolio analytics through a combination of live data, workflow automation, and AI-driven insights.

Operating at the intersection of Generative AI, finance, and real estate, we are building systems that digitize and simplify complex financial workflows.

Our clients include leading institutions such as JLL, Pacific Life Insurance Company, and KeyBank. We are a lean, high-performance team building category-defining technology in a $17 trillion industry.

To learn more about our platform and vision, please visit our website.

The Role

We are looking for a Backend Software Engineer with strong experience in building scalable systems and a deep interest in AI-powered applications.

This is a high-impact, hands-on role where you will design and build backend services, integrate AI capabilities, and develop intelligent, agent-driven workflows used in real-world production environments.

You will work closely with product, AI, and engineering teams to deliver reliable, high-performance systems and automation features.

What You Will Do

Backend Development

• Design, build, and maintain backend services using Java (Spring Boot) and Python
• Develop scalable APIs and microservices for data-intensive applications
• Optimize system performance, reliability, and scalability
• Design efficient data models and handle complex integrations

AI & Intelligent Systems

• Implement and integrate AI-powered features into core products
• Design and build agent-based workflows for automation and decision-making
• Apply prompt engineering techniques to improve LLM outputs and behavior
• Work with modern AI frameworks to productionize intelligent systems

Cloud & Infrastructure

• Develop and deploy backend systems on AWS (EC2, S3, RDS, Lambda, etc.)
• Build resilient, scalable cloud-native services
• Contribute to system monitoring, logging, and reliability

System Design & Engineering Excellence

• Contribute to architecture, service boundaries, and system design decisions
• Write clean, maintainable, and well-documented code
• Ensure security, performance, and operational stability
• Continuously improve engineering quality and development practices

Collaboration

• Work closely with frontend, product, and AI teams
• Contribute to end-to-end feature delivery
• Participate in Agile development processes

Requirements

• 5+ years of backend software development experience
• Strong experience building and scaling backend systems in production

Core Technical Skills

• Strong experience with Java and Spring Boot
• Solid experience with Python
• Strong knowledge of SQL and database design (PostgreSQL preferred)
• Experience building REST APIs, microservices, and distributed systems
• Hands-on experience with AWS (EC2, S3, RDS, Lambda, etc.)
• Proficiency with Git and modern development workflows

AI & Modern Development Experience

• Experience with prompt engineering for LLM-based systems
• Practical experience building AI agent workflows in production
• Familiarity with frameworks/tools such as:
  • LangGraph
  • LangChain
  • LangSmith
  • or similar ecosystems
• Experience using AI-assisted development tools, such as:
  • Claude Code
  • Codex
  • OpenCode
  • or similar

Nice to Have

• Experience with vector databases or semantic search (e.g., Milvus)
• Knowledge of RAG (Retrieval-Augmented Generation) architectures
• Experience with CI/CD pipelines and DevOps practices
• Familiarity with event-driven architecture

• Experience with data processing pipelines or document AI systems

   

Why Join Us

• Work on cutting-edge AI-powered systems in a $17T industry
• Build real-world applications using LLMs, agents, and automation
• High ownership and autonomy with meaningful technical impact
• Opportunity to influence system design and engineering direction
• Fast-moving, execution-focused team with minimal bureaucracy
• Competitive compensation and flexible work environment