Jobs Backend

The role is predominantly remote (80–100 per cent), although occasional on-site meetings in Vienna may be required.

Responsibilities:
Development and further development of applications using C# and Angular
Analysis, design and implementation of technical solutions
Contributing to architectural matters
Testing, deployment and optimisation of existing applications

Essential requirements:
.NET, C#, JavaScript, TypeScript, Angular, PostgreSQL/RDBMS, DevOps, CI/CD, test automation, code reviews, code quality, application design, scaling and system integration.
It is important that all the technologies and topics listed are clearly reflected in your CV.

Key details:
Start: August 2026 (exact date to be confirmed)
German-language project !!!!

Technology: 
Java 6/7/8, Legacy Spring, Java EE/J2EE, Servlets, JSP, Struts, Hibernate, JDBC, Tomcat/JBoss/WebLogic/WebSphere, Maven/Ant/Gradle, SOAP, XML, SQL

English: Intermediate – Upper Intermediate
Assignment: Full-time
Duration: 6+ months

We offer:

- cooperation with a stable company with well-established processes and a positive atmosphere;

- experience in project management of different levels of complexity, methodology, and approaches;

- flexible schedule: Mon-Fri (8 hours a day);

- 18 days of paid vacation; 15 days sick leave

- a decent level of remuneration with regular reviews of the results of cooperation;

- corporate library for self-development;

- extensive loyalty program.

Creatio is a global vendor of an agentic CRM & workflow platform with no-code and AI at its core. We help organizations automate customer and operational workflows achieving the fastest time-to-value and the highest ROI on the market. Millions of workflows run on Creatio daily, supporting thousands of clients in over 100 countries. Genuine care for our clients and partners is at the heart of our DNA. 

We’re proud to be recognized by top industry analysts as a Leader and Strong Performer in multiple Gartner and Forrester reports. 

In 2025, Creatio was named to Inc.’s Best Workplaces list, recognizing our commitment to employee wellbeing and a strong workplace culture.

Who We’re Looking For:

We invite an experienced Technical Lead to join our ALM Domain for collaborating within Scrum teams. ALM Domain teams build platform-level tools and capabilities that support the full Application Lifecycle of Creatio applications. This includes development and packaging frameworks, versioning, configuration management, delivery pipelines, testing, monitoring and alerting, building and integrating CI/CD tools, and lifecycle automation for internal teams and external customers/partners. The focus is on making application development and delivery and maintenance on Creatio predictable, repeatable, and safe across environments.

Team composition: 3 Developers, 1 QA, 1 Technical Lead, 1 Agile Coach, 1 Product Owner

Responsibilities:  

• Lead the design and development of architectural solutions and prototypes alongside the system architect and development team.
• Build, test, and debug high-quality back-end and front-end code.
• Support seamless product operation by addressing customer cases and ensuring system reliability.
• Continuously monitor and optimize development processes to enhance team productivity and quality.
• Drive adoption of innovative tools, standards, and best practices in software development.
• Collaborate closely with product managers, stakeholders, and leadership to align technical vision with business goals.

• Conduct technical interviews, mentor developers, and facilitate onboarding and professional growth.

   

Requirements: 

• Minimum 6 years of software development experience with full-stack expertise in .NET and Angular.
• At least 1 year in a technical lead or team lead role, guiding teams successfully.
• Strong mastery of object-oriented programming and solid application of KISS, SOLID, and DRY principles.
• Proficient in C# and modern .NET runtime environments (.NET 6+), including ASP.NET MVC, Core, and Web API development.
• Hands-on experience with microservices, containerization, Kubernetes, and Helm for orchestration.
• Deep knowledge of Angular 15+ with ability to build new components and optimize existing ones in a monorepo using RXJS and pipeline operators.
• Skilled in JavaScript, TypeScript, DOM manipulation, CSS/SASS, and UI styling per design specifications.
• Experience using Git and SVN with workflows involving branching, merging, and rebasing.
• Strong unit testing background including NUnit, mocking frameworks, and API testing with Postman.
• English proficiency at Upper-Intermediate level or above, both spoken and written.

What to expect from us: 

• Growth & Development: Clear career paths, mentorship opportunities, and access to continuous learning to help you reach your full potential.
• Flexibility & Well-Being: We provide flexible work arrangements and initiatives that empower you to manage your schedule effectively, stay productive, and thrive both personally and professionally.
• Recognition & Impact: A culture that celebrates achievements, values your ideas, and empowers you to make real contributions from day one.
• Innovative Culture: Be part of a company that embraces new ideas, modern technologies, and bold thinking to stay ahead of the curve.
• Benefits & Rewards Package: We provide competitive compensation and benefits designed to support you and your family. Our rewards approach goes beyond salary, recognizing your contributions and commitment. The exact package may vary depending on your country of residence and employment type. 

The Mission

Wallee Group is a leader in advanced payment solutions, dedicated to providing robust, scalable, and secure systems across multiple domains. We enhance customer experiences through innovative payment and finance technology that empowers businesses to grow efficiently. With operations spanning several countries, we thrive on collaboration and agility, utilizing the Scrum framework to drive our international teams. At Wallee, we stay at the forefront of market trends, continuously innovating to deliver premier services to our global customers.

The Role

To achieve our mission of providing the market's best payment experience, Wallee is seeking experienced and versatile java software engineers for our Vilnius office. As disruptors in the payment space, we build industry-leading systems that demand the highest standards of security and reliability. We are constantly pushing our solutions into new territories, and we are looking for engineers who thrive in a fast-paced, agile environment to help us redefine the future of finance.

Tasks

Your Impact

• Architect Scalability: Design and develop highly resilient back-end systems using Java, ensuring our infrastructure handles global scale with ease.
• Feature Innovation: Own the end-to-end lifecycle of new features, from initial implementation to refined bug fixing and performance tuning.
• Collaborative Engineering: Work closely with product managers, UX designers, and QA to translate complex business needs into elegant technical solutions.
• Code Excellence: Drive quality through automated testing, rigorous code reviews, and the creation of clear, maintainable technical documentation.
• Stay Ahead: Continuously research and evaluate emerging technologies and methodologies to keep Wallee at the cutting edge of the fintech industry.

Requirements

What You Bring to the Table

• Technical Depth: Advanced proficiency in Java and core frameworks such as Spring, Spring Boot, and Hibernate.
• Systems Thinking: Proven experience building distributed systems and scalable, high-availability solutions.
• Data Mastery: Strong proficiency in SQL and experience managing complex data structures.
• Modern DevOps: Hands-on experience with CI/CD pipelines (Jenkins/GitLab CI) and containerization (Docker, AWS ECS).
• Agile Mindset: A degree in Computer Science (or equivalent experience) and a track record of thriving in fast-paced, Agile environments.

• Bonus Points: Experience with JavaScript, Apache Camel, or BPM engines.

   

  Benefits:

• You are part of an agile, young international team and shape our products sustainably with your ideas.
• You will play a decisive role in designing products in an omni channel payment start-up and work with leading companies in the financial industry on international projects.
• We offer flexible structures and flat hierarchies.
• Cooperation with motivated colleagues and numerous personal development opportunities.

Join a Company That Invests in You

Seeking Alpha is the world’s leading community of engaged investors. We’re the go-to destination for investors looking for actionable stock market opinions, real-time market analysis, and unique financial insights. At the same time, we’re also dedicated to creating a workplace where our team thrives. We’re passionate about fostering a flexible, balanced environment with remote work options and an array of perks that make a real difference.

Here, your growth matters. We prioritize your development through ongoing learning and career advancement opportunities, helping you reach new milestones. Join Seeking Alpha to be part of a company that values your unique journey, supports your success, and champions both your personal well-being and professional goals.

What We're Looking For

Role Overview: You will take ownership of the search infrastructure for Ask Seeking Alpha — a financial intelligence platform powered by LLMs. Your main goal is to ensure our AI agents can find the exact financial data they need (articles, transcripts, news) in milliseconds. You will work on the Retrieval layer of our RAG architecture, combining traditional text search with modern vector search techniques.

Tech Stack: Elasticsearch (v8+), Python (FastAPI, Asyncio), OpenAI Embeddings, LangChain, LangSmith.

The Senior Search Engineer will be engaged with the company as a contractor (Private Entrepreneur).

What You'll Do

• Search Engine Development: Design and implement Hybrid Search strategies. You will figure out how to best combine "keyword matching" (finding specific tickers like 'AAPL') with "semantic search" (finding concepts like 'revenue growth').
• Relevance Tuning: You are responsible for the quality of search results. You will build systems to measure and improve how well the search engine answers user queries (using tools like LangSmith).
• Vector Search & RAG: Manage the integration of OpenAI embeddings into Elasticsearch. You will solve challenges related to indexing long documents (e.g., earnings transcripts) so the AI retrieves only the most relevant parts.
• Performance Optimization: Optimize Elasticsearch queries and index settings to ensure low latency, even for complex queries with many filters.
• Python Backend: Develop and maintain the Python services that build queries and process results. We use FastAPI and Asyncio heavily.

Requirements

• Elasticsearch Expert: 5+ years of experience working with Search Engines in production. You understand how indices, analyzers, and mappings work "under the hood."
• Search Theory: You understand the difference between Lexical Search (keywords) and Vector Search (meaning), and know when to use which.
• Python Proficiency: Strong experience with Python 3.10+. You are comfortable writing asynchronous code (async/await) and building APIs.
• Data Engineering: Experience designing data schemas for search (how to structure JSON documents for efficient retrieval).

Nice to Have

• Experience building RAG (Retrieval-Augmented Generation) pipelines.
• Familiarity with LangChain or similar LLM frameworks.
• Experience with Evaluation tools (like LangSmith) to test search quality automatically.
• Background in Finance (understanding tickers, earnings calls, etc.).

Join a Company That Invests in You

Seeking Alpha is the world’s leading community of engaged investors. We’re the go-to destination for investors looking for actionable stock market opinions, real-time market analysis, and unique financial insights. At the same time, we’re also dedicated to creating a workplace where our team thrives. We’re passionate about fostering a flexible, balanced environment with remote work options and an array of perks that make a real difference.

Here, your growth matters. We prioritize your development through ongoing learning and career advancement opportunities, helping you reach new milestones. Join Seeking Alpha to be part of a company that values your unique journey, supports your success, and champions both your personal well-being and professional goals.

What We're Looking For

Role Overview: We are developing Ask Seeking Alpha — a high-load financial analysis system based on Large Language Models. The architecture is built on complex multi-agent orchestration using LangGraph, FastAPI, and Elasticsearch.

We are looking for a Senior Backend Engineer specialized in Generative AI to design agent workflows, optimize interactions with models (OpenAI, AWS Bedrock), and ensure the reliability of non-deterministic systems in production.

The Senior Python AI Engineer will be engaged with the company as a contractor (Private Entrepreneur).

Tech Stack: Python (Asyncio), FastAPI, LangChain, LangGraph, Pydantic, Elasticsearch, AWS Bedrock / OpenAI API, LangSmith.

What You'll Do

• Agent Architecture: Design and implement complex agent orchestration logic using LangGraph. You will define state management, conditional routing, and error handling within the agent graph.
• Tool Engineering: Build and optimize the tool layer (function calling) that allows LLMs to interact with internal financial APIs and databases accurately.
• Performance Optimization:

-Reduce end-to-end latency through asynchronous processing and streaming (SSE).

-Implement semantic caching strategies to minimize API costs and response time.

-Optimize token usage without sacrificing answer quality.

• Observability & Evaluation: Implement automated evaluation pipelines using LangSmith. You will be responsible for setting up regression testing for prompts and agents to measure quality (correctness, faithfulness) before deployment.
• Advanced RAG: Refine retrieval strategies. Work on hybrid search implementation (Keyword + Vector), re-ranking, and query expansion to feed the most relevant context to the model.

Requirements

• Python Expert: Strong proficiency in modern Python. Deep understanding of asynchronous programming (asyncio) patterns is mandatory, as our entire I/O pipeline (Network, DB, LLM) is non-blocking. Experience with FastAPI and Pydantic (v2).
• Agentic Frameworks: Production experience with LangChain. Hands-on experience or deep conceptual understanding of LangGraph (or similar state-machine-based agent frameworks).

Deep LLM Expertise (What we mean by "Deep"):

• Non-determinism Management: Strategies for handling LLM hallucinations and ensuring reliable outputs (e.g., self-correction loops, specific prompting techniques like CoT/ReAct).
• Structured Outputs: Experience forcing LLMs to adhere to strict schemas (Pydantic/JSON mode) for reliable downstream processing.
• Context Optimization: Advanced strategies for managing limited context windows (summarization chains, sliding windows, selective context injection) beyond simple truncation.
• Inference Economics: Understanding the trade-offs between model size, latency, and cost (e.g., when to route to GPT-4 vs. a smaller/faster model).

Nice to Have

• Experience with Elasticsearch (DSL queries, analyzers).
• Knowledge of vector databases and embedding models.
• Background in FinTech or familiarity with financial data structures.

Our partner is a leading B2B iGaming supplier delivering engaging casino content to regulated markets worldwide. Since 2012, they’ve been building high-quality gaming experiences through a modern cloud-native platform that powers hundreds of operator brands across multiple jurisdictions.

Their Platform Solutions team sits at the heart of that ecosystem, enabling seamless integrations between the company, operators, aggregators and platform providers.

Our partner is looking for a Senior Backend Developer who thrives in a deeply hands-on environment and enjoys being close to the code on a daily basis. This role is heavily focused on building, optimising, and scaling backend services in a high-load system where performance and reliability are critical.

You’ll be working on complex, real-time challenges at the core of their platform – improving latency, ensuring high availability, and making systems more efficient at scale. This is not a coordination-heavy role; it’s for someone who enjoys writing production code, solving tough engineering problems, and seeing the direct impact of their work.

Main Responsibilities

• Work as part of a cross-functional team owning a core product within the platform
• Design, build, and deliver new backend features end-to-end in a distributed environment
• Write high-quality, production-level code daily, contributing directly to a high-load, scalable system
• Take ownership of services handling financial transactions at scale, with a strong focus on reliability
and accuracy
• Proactively suggest and implement improvements in architecture, processes, and development
practices
• Participate in code and architectural reviews to maintain high engineering standards
• Solve complex business and technical challenges with pragmatic, efficient solutions
• Participating in on-call rotations within the squad to ensure the reliability and availability of our
systems
• Play an active role in ongoing tech transformation initiatives across the platform
• Collaborate closely with engineers, product, and other stakeholders to deliver impactful solutions
used by millions globally

Mandatory Requirements

• Solid experience with Node.js/TypeScript is ideal, but we also welcome experts in other OOP
languages such as Java, Python, C++, C#, or Go.
• Strong understanding of asynchronous programming techniques
• Experience with distributed systems and messaging systems (Apache Kafka, gRPC)
• Knowledge of relational databases (MySQL, PostgreSQL), columnar databases (ClickHouse), and
NoSQL technologies (DynamoDB, MongoDB)
• Skilled in developing and maintaining end-to-end and unit tests
• Proven track record of developing production-ready solutions
• Degree in Computer Science or related field

Nice to Have
• Experience with large-scale microservices architecture.
• Good ground knowledge of Kubernetes
• Familiarity with cloud providers (especially AWS)
• Understanding of application security and industry best practices
• Understanding of enterprise development patterns
• Active performance observation
• Gambling domain experience

We offer

• Competitive Salary
• Quarterly Bonuses
• Unlimited Paid Time Off
• Unlimited Paid Sick Leave
• Remote & Flexible Working
• Private Medical Insurance
• Financial Support for Life Events
• Professional Development Budget
• International Exposure
• Regular Company Events

IT компанія WorkTime з офісами у Канаді и Києві, шукає до себе в команду Senior PHP Developer у Київський офіс. Сфера діяльності компанії — розробка та продаж власного моніторингового софту.

Looking for a back-end web developer:

An active, experienced and motivated individual to fulfill the position in our company.

About the project:

The project is an employee monitoring software. In the current situation this is a highly demanded product and demand is growing. Our product is 20+ years on the market and we are focusing today on creating from the scratch its cloud edition. The goal is to replace all existing editions with one high quality web version. Back end server and database environment — Windows Server.

As the developer of this project you are expected to:

Demonstrate willingness to learn and to professionally grow.

Actively participate in the project development.

Demonstrate high quality coding style to support our goal of creating the new reliable, scalable and stable system.

Your main duty will be back-end development and your expertise will be needed during the system development and release stages.

If you have any experience in front-end development, this is a plus and is welcome.

Required knowledge:

PHP 7.4 - 8.2;

OOP (object-oriented programming);

Firebird, MSSQL (Knowledge of pure SQL), PDO, InterBase;

JavaScript, JQuery, HTML, CSS;

Rest API (JSON);

Git, GitLab;

Apache;

Php;

StormComposer.

Will be good:

Symfony 5 - 6;

PostgreSQL;

Docker;

XDebug;

Nginx;

UnitTest;

Ability to refactor code

More about the project:

The project is an employee monitoring software. In the current situation this is a highly demanded product and demand is growing. Our product is 20+ years on the market and we are focusing today on creating from the scratch its cloud edition. The goal is to replace all existing editions with one high quality web version. Back end server and database environment - Windows Server.

What we offer:

Compensation in USD,

Highly professional result-oriented environment,

New development project where you can apply and expand your skills fully,

Stable growing company, 20+ years on the market,

We are seeking a prospective and ambitious Middle Python Engineer to join our team! Our client is the world’s acknowledged market leader in wireless communication systems for motorcyclists.

Responsibilities:

• Develop, maintain, and enhance backend features using Python. 
• Take ownership of assigned tasks and features from implementation through deployment. 
• Troubleshoot, debug, and resolve backend issues. 
• Write clean, maintainable, and well-tested code. 
• Keep suggesting improvements and ways to enhance the functioning of the software
• Ensure high quality and reliability of delivered features. 

Requirements:

• 4+ years of backend development experience, including at least 3 years of hands-on Python development.
• Strong experience building and operating production systems on AWS.
• Hands-on experience designing and implementing scalable distributed systems (microservices, REST APIs).
• Experience working with NoSQL databases, preferably MongoDB.
• Experience implementing observability solutions using tools such as Grafana, Datadog, or similar.
• Strong understanding of backend design principles, clean architecture, system reliability, and performance optimization.
• Ability to take ownership of features end-to-end, from design and implementation to deployment and production monitoring.
• Strong problem-solving skills with the ability to troubleshoot complex production issues.
• Hands-on experience with, or a strong willingness to work with, AI tools to improve engineering efficiency and code quality.
• Good written and spoken English (Intermediate level or higher).

Nice to have:

• Experience with serverless architectures, including AWS Lambda and the Serverless Framework.
• Experience working with containerization technologies such as Docker and Kubernetes.
• Experience with SQL databases and relational data modeling.
• Experience working with additional cloud providers (GCP, Azure).
• Experience working with data platforms or collaborating closely with BI/Data teams.
• Experience working in Agile environments (Scrum/Kanban).

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 buildings
• Other location-specific benefits

*not applicable for freelancers

• You will join a Regulatory Reporting Platform within a large US investment bank. The platform is responsible for collecting, processing, and transforming large volumes of data from multiple internal systems to produce regulatory reports for 240 jurisdictions worldwide. In total, the platform supports around 10,000 reports across a wide range of regulatory, compliance, financial, and risk reporting areas.
  This is a large-scale, business-critical data platform operating in a highly regulated environment, where data accuracy, quality, traceability, and timely delivery are essential. The team works on building and enhancing data pipelines, implementing reporting logic, ensuring data validation and reconciliation, and supporting the generation of complex regulatory outputs.
  The project is delivered by a global distributed team with colleagues located in Ukraine, Poland, and the US, offering close collaboration with engineers, analysts, and business stakeholders across multiple regions.

   

• Responsibilities:

  - Design, develop, and maintain solutions for a large-scale Regulatory Reporting Platform
  - Build and enhance data processing pipelines using Java and Apache Spark
  - Implement scalable logic for data ingestion, transformation, aggregation, and enrichment from multiple internal data sources
  - Develop and optimize batch processing jobs to support the generation of regulatory reports across multiple jurisdictions
  - Ensure high standards of data quality, validation, reconciliation, and consistency throughout the reporting lifecycle
  - Translate business and regulatory requirements into robust technical solutions
  - Collaborate with business analysts, QA engineers, and cross-functional teams to deliver reporting functionality
  - Investigate and resolve data and application issues in development, test, and production environments
  - Improve application performance, scalability, and reliability for high-volume data processing workloads
  - Contribute to the design and implementation of reusable components and engineering best practices
  - Participate in code reviews, testing, and release activities to ensure high-quality deliverables
  - Work closely with distributed teams across Ukraine, Poland, and the US in an agile delivery model
  - Support continuous improvement of the platform, including monitoring, troubleshooting, and operational stability

   

• Mandatory Skills Description:

  - 6+ years of commercial experience with Java
  - Experience in designing and developing scalable, high-performance backend applications
  - Good knowledge of SQL and working with large datasets from multiple data sources
  - Strong problem-solving skills and ability to work effectively in a global distributed team

   

• Nice-to-Have Skills Description:

  - Spark and Hadoop knowledge
  - Experience in financial services, investment banking, or regulatory reporting projects
  - Familiarity with data quality, reconciliation, and control frameworks
  - Experience working with large-scale enterprise data platforms
  - Knowledge of cloud environments and modern data platform architectures
  - Understanding of CI/CD practices and automated deployment pipelines
  - Experience working in Agile / Scrum teams within a distributed global setup

   

• Languages:
  • English: B2 Upper Intermediate

• Project Description:

  You will join a Regulatory Reporting Platform within a large US investment bank. The platform is responsible for collecting, processing, and transforming large volumes of data from multiple internal systems to produce regulatory reports for 240 jurisdictions worldwide. In total, the platform supports around 10,000 reports across a wide range of regulatory, compliance, financial, and risk reporting areas.
  This is a large-scale, business-critical data platform operating in a highly regulated environment, where data accuracy, quality, traceability, and timely delivery are essential. The team works on building and enhancing data pipelines, implementing reporting logic, ensuring data validation and reconciliation, and supporting the generation of complex regulatory outputs.
  The project is delivered by a global distributed team with colleagues located in Ukraine, Poland, and the US, offering close collaboration with engineers, analysts, and business stakeholders across multiple regions.

• Responsibilities:

  - Design, develop, and maintain solutions for a large-scale Regulatory Reporting Platform
  - Build and enhance data processing pipelines using Java and Apache Spark
  - Implement scalable logic for data ingestion, transformation, aggregation, and enrichment from multiple internal data sources
  - Develop and optimize batch processing jobs to support the generation of regulatory reports across multiple jurisdictions
  - Ensure high standards of data quality, validation, reconciliation, and consistency throughout the reporting lifecycle
  - Translate business and regulatory requirements into robust technical solutions
  - Collaborate with business analysts, QA engineers, and cross-functional teams to deliver reporting functionality
  - Investigate and resolve data and application issues in development, test, and production environments
  - Improve application performance, scalability, and reliability for high-volume data processing workloads
  - Contribute to the design and implementation of reusable components and engineering best practices
  - Participate in code reviews, testing, and release activities to ensure high-quality deliverables
  - Work closely with distributed teams across Ukraine, Poland, and the US in an agile delivery model
  - Support continuous improvement of the platform, including monitoring, troubleshooting, and operational stability

• Mandatory Skills Description:

  - 6+ years of commercial experience with Java
  - Experience in designing and developing scalable, high-performance backend applications
  - Good knowledge of SQL and working with large datasets from multiple data sources
  - Strong problem-solving skills and ability to work effectively in a global distributed team

• Nice-to-Have Skills Description:

  - Spark and Hadoop knowledge
  - Experience in financial services, investment banking, or regulatory reporting projects
  - Familiarity with data quality, reconciliation, and control frameworks
  - Experience working with large-scale enterprise data platforms
  - Knowledge of cloud environments and modern data platform architectures
  - Understanding of CI/CD practices and automated deployment pipelines
  - Experience working in Agile / Scrum teams within a distributed global setup

• Languages:
  • English: B2 Upper Intermediate

Ідеально для тих, хто прагне:

• Проектувати, створювати та обслуговувати сервіси за допомогою .NET (C#);
• Розробляти та розвивати мікросервіси у production середовищі;
• Підтримувати існуючу функціональність та забезпечувати зворотню сумісність релізів;
• Працювати над основними частинами домену, такими як облікові записи, реєстрація, аутентифікація, гаманець та пов'язані з ними бізнес-можливості;
• Брати участь в аналізі завдань, декомпозиції та оцінці estimation;
• Надавати виконані завдання для тестування та співпрацювати з контролем якості під час фаз тестування;
• Створювати інтеграції за допомогою асинхронного зв'язку та шаблонів, керованих подіями;
• Працювати з реляційними базами даних, транзакційними потоками та оптимізацією продуктивності запитів;
• Виявляти вузькі місця у продуктивності та вносити покращення проектування системи;
• Брати участь у спостереженнях за сервісами (журнали, метрики, трасування, інформаційні панелі, моніторинг);
• Керувати конфігураціями розгортання та маніфестами в середовищах Kubernetes;
• Працювати в налаштуванні GitOps та брати участь у розгортанні та операційній власності;
• Співпрацювати з командами DevOps щодо змін, пов'язаних з інфраструктурою (включаючи робочі процеси Terraform);
• Приймати участь у ротації чергувань та обробки production інцидентів;
• Опрацьовувати технічний борг та пропонування покращень;
• Виконувати high-quality code reviews з акцентом на зручність обслуговування, продуктивність та узгодженість.

Досвід, який стане твоєю перевагою:

• 5+ років досвіду комерційної розробки backend-проектів з C# / .NET (7+), .NET Core / ASP.NET Core;
• Глибоке розуміння архітектури мікросервісів та розподілених систем;
• Досвід роботи з асинхронним зв'язком та event-driven архітектурою;
• Досвід роботи з брокерами повідомлень (Kafka або аналогічні);
• Глибокі знання реляційних баз даних (SQL, транзакції, індексація, налаштування продуктивності), PostgreSQL буде перевагою;
• Досвід роботи з інструментами ORM (наприклад, Entity Framework);
• Досвід написання модульних та інтеграційних тестів;
• Розуміння аутентифікації та авторизації (OAuth 2.0, OpenID Connect);
• Гарне розуміння принципів проектування програмного забезпечення (SOLID, розділення проблем, тестованість);
• Розуміння observability та моніторингу у production системах;
• Досвід усунення несправностей з продуктивністю та пам'яттю;
• Англійська - Upper Intermediate;
• Досвід роботи з AWS, Kubernetes, Terraform буде перевагою.

Ми цінуємо:

• Хороші комунікативні навички;
• Багатозадачність, швидке виконання завдань;
• Відповідальність, увага до деталей.

Наші клієнти пропонують конкурентні переваги для підтримки вашого професійного та особистого зростання, зокрема:

• Орієнтація на здоров’я та добробут;
• Глобальне медичне страхування;
• Можливості для зростання;
• Програми бенефітів (компенсація спорту / стоматології / психолога тощо);
• Бонуси за досягнення результатів;
• Динамічне робоче середовище.

English version:

Perfect for those who aim to:

• Design, build, and maintain backend services using .NET (C#);
• Develop and evolve microservices in a production environment;
• Support existing functionality and ensure backward compatibility of releases;
• Work on core domain flows such as accounts, registration, authentication, wallet, and related business capabilities;
• Participate in task analysis, decomposition, and effort estimation;
• Deliver completed tasks for testing and collaborate with QA during test phases;
• Build integrations using asynchronous communication and event-driven patterns;
• Work with relational databases, transactional flows, and optimize query performance;
• Identify performance bottlenecks and contribute to system design improvements;
• Contribute to service observability (logs, metrics, traces, dashboards, monitoring);
• Manage deployment configurations and manifests in Kubernetes environments;
• Work in a GitOps setup and participate in deployment and operational ownership;
• Collaborate with DevOps teams on infrastructure-related changes (including Terraform workflows);
• Participate in on-call rotation and handle production incidents;
• Identify technical debt and propose improvements;
• Perform high-quality code reviews focusing on maintainability, performance, and consistency.

Experience you’ll need to bring:

• 5+ years of commercial backend development experience with C# / .NET (7+), .NET Core / ASP.NET Core;
• Solid understanding of microservices architecture and distributed systems;
• Experience with asynchronous communication and event-driven architectures;
• Experience with message brokers (Kafka or similar);
• Strong knowledge of relational databases (SQL, transactions, indexing, performance tuning), PostgreSQL will be a plus;
• Experience with ORM tools (e.g., Entity Framework);
• Experience writing Unit and Integration tests; 
• Understanding of authentication and authorization (OAuth 2.0, OpenID Connect);
• Good understanding of software design principles (SOLID, separation of concerns, testability);
• Understanding of observability and monitoring in production systems;
• Experience troubleshooting performance and memory issues;
• English - Upper Intermediate;
• Experience with AWS, Kubernetes, Terraform will be a plus.

It's a perfect match if you have those personal features:

• Good communication skills;
• Multitasking, quick task execution;
• Responsibility, attention to detail.

Our clients offer competitive benefits to support your professional and personal growth, including: 

• Health & Wellness Focus;
• Global Medical Coverage;
• Growth Opportunities;
• Benefits Programs (compensation for the gym/stomatology/psychological service & etc.);
• Performance-Driven Rewards;
• Dynamic Work Environment.

• Project Description:

  You will join a Regulatory Reporting Platform within a large US investment bank. The platform is responsible for collecting, processing, and transforming large volumes of data from multiple internal systems to produce regulatory reports for 240 jurisdictions worldwide. In total, the platform supports around 10,000 reports across a wide range of regulatory, compliance, financial, and risk reporting areas.

  
  This is a large-scale, business-critical data platform operating in a highly regulated environment, where data accuracy, quality, traceability, and timely delivery are essential. The team works on building and enhancing data pipelines, implementing reporting logic, ensuring data validation and reconciliation, and supporting the generation of complex regulatory outputs.

  
  The project is delivered by a global distributed team with colleagues located in Ukraine, Poland, and the US, offering close collaboration with engineers, analysts, and business stakeholders across multiple regions.

   

• Responsibilities:

  - Design, develop, and maintain solutions for a large-scale Regulatory Reporting Platform
  - Build and enhance data processing pipelines using Java and Apache Spark
  - Implement scalable logic for data ingestion, transformation, aggregation, and enrichment from multiple internal data sources
  - Develop and optimize batch processing jobs to support the generation of regulatory reports across multiple jurisdictions
  - Ensure high standards of data quality, validation, reconciliation, and consistency throughout the reporting lifecycle
  - Translate business and regulatory requirements into robust technical solutions
  - Collaborate with business analysts, QA engineers, and cross-functional teams to deliver reporting functionality
  - Investigate and resolve data and application issues in development, test, and production environments
  - Improve application performance, scalability, and reliability for high-volume data processing workloads
  - Contribute to the design and implementation of reusable components and engineering best practices
  - Participate in code reviews, testing, and release activities to ensure high-quality deliverables
  - Work closely with distributed teams across Ukraine, Poland, and the US in an agile delivery model
  - Support continuous improvement of the platform, including monitoring, troubleshooting, and operational stability

   

• Mandatory Skills Description:

  - 6+ years of commercial experience with Java
  - Experience in designing and developing scalable, high-performance backend applications
  - Good knowledge of SQL and working with large datasets from multiple data sources
  - Strong problem-solving skills and ability to work effectively in a global distributed team

Hey there! We're looking for an ambitious tech lead ready to own the entire 𝗔𝗜 𝗚𝗧𝗠 𝗣𝗹𝗮𝘁𝗳𝗼𝗿𝗺 - from code to deployment. No micromanagement, just real ownership. 

🔧 𝗪𝗵𝗮𝘁 𝘆𝗼𝘂'𝗹𝗹 𝗱𝗼
• Build features end-to-end: Go backend (API + background workers) and React frontend - hands-on, no split between "backend" and "frontend"
• Own the full deployment cycle: builds, systemd, nginx, Postgres migrations, rollbacks
• Integrate external services: email (Brevo, IMAP), data enrichment (Apollo, Hunter, ZoomInfo), LLMs (OpenRouter, Claude), Slack, CRM
• Build data pipelines: CSV imports, deduplication, idempotent updates
• Review PRs, merge, deploy
• Work directly with non-technical stakeholders - turn a conversation into a shipped feature

⭐ 𝗪𝗵𝗼 𝘆𝗼𝘂 𝗮𝗿𝗲
• Product-minded -you resolve ambiguity with sensible defaults, not endless spec requests
• Fast but security-conscious - mass email means one mistake can hurt domain reputation
• Autonomous - ship it, verify it, fix it, confirm it, on your own

• Production-level Go: goroutines, contexts, pgx, clean SQL (no ORM)
• React + TypeScript + Vite + Tailwind, React Query
• PostgreSQL: strong SQL, indexing, migrations
• Linux, Docker, nginx, systemd - independent deployment and ops
• Email deliverability (SPF/DKIM/DMARC), IMAP, transactional providers
• LLM integration in production
• Scraping (Playwright, anti-bot evasion)
• Solo or small early-stage team experience

🚀 𝗪𝗵𝗮𝘁 𝘄𝗲 𝗼𝗳𝗳𝗲𝗿
• Fully remote- work from anywhere in the world
• Build and shape your own team as the product grows
• Full ownership and freedom to execute your vision, no bureaucracy
• Direct, visible impact -  what you ship actually matters