Senior Full-Stack Engineer (C#, React)

🏢 Summary: Full-time Senior Full Stack Engineer role focused on building and enhancing a SaaS marketplace platform hosted on AWS, using React and JavaScript technologies. The position involves developing complex back-end logic and contributing to a global engineering team. The role requires overlap with CET working hours and emphasizes high-quality, test-driven development. 🗂️ Requirements: 6+ years of full-stack development experience, 4+ years of experience with Node.js and/or Python, 4+ years of experience with React, Strong knowledge of JavaScript and TypeScript, Experience with ES6, Ability to write standards-compliant HTML and CSS, Experience with Test Driven Development, Familiarity with Git, Knowledge of Linux or Unix-based systems, Experience with RESTful web services 📃 Skills: React, JavaScript, TypeScript, Node.js, Python, HTML, CSS, TDD, Git, Linux, Unix, REST, AWS, ES6 🏢 Description: Svitla Systems Inc. is looking for a Senior Full Stack Engineer with React and JavaScript for a full-time position (40 hours per week) in Europe. Our client is a leading on-site work marketplace seeking creative and skilled developers to join the global engineering team. The mission is to design and develop technology that improves users' lives while providing an exceptionally high level of service. The cutting-edge technology SaaS solution hosted on AWS that enables today's and tomorrow’s Gig economy. Overlap till 7 pm CET. Requirements: 6+ years of experience in full-stack development. 4+ years of experience with Node.js and/or Python, React. Strong knowledge of JavaScript/TypeScript, ES6, and React. Understanding of writing clean, standards-compliant HTML and CSS. Strong focus and experience in Test Driven Development. Familiarity with the Git version control system. Knowledge of Linux or other Unix-based systems (Ubuntu/Debian is a plus). Understanding of web services-based solutions (REST specifically). Strong written and verbal communication skills. Ability to work well with others as part of a team and across teams. Ability to break down more significant initiatives into manageable pieces. Upper-intermediate level of English. Nice to have: Experience with Preprocessor (LESS/Sass). Experience working with offshore teams. Experience with React-native. Responsibilities: Participate in developing a feature connected with complex back-end logic for the client-worker part. Take part in team meetings, including daily stand-ups and backlog refinement sessions. Provide code refactoring when needed. We offer: US and EU projects based on advanced technologies. Competitive compensation based on skills and experience. Regular performance appraisals to support your growth. Flexibility in workspace, either remote or our welcoming office. Bonuses for article writing, public talks, and other activities. Generous time off, including vacation, national holidays, sick leaves, and family days. Personalized learning programs tailored to your interests and skill development. Free tech webinars and meetups organized by Svitla. Regular corporate online activities. Awesome team and a friendly, supportive community!

🏢 Summary: Full-time Senior Full Stack Engineer role focused on building and maintaining scalable backend services with .NET and Java/Kotlin, and contributing to frontend development with Angular. The position involves designing secure APIs, driving UI architecture, and working within Agile teams to deliver commercial software products. Approximately 20–30% of the role is dedicated to frontend development. 🗂️ Requirements: 5+ years of commercial software development experience, Strong experience with .NET (C#) backend development, Strong experience with Java or Kotlin backend development, Hands-on experience with Kotlin in backend environments, Knowledge of Angular and TypeScript, Experience designing and working with RESTful APIs and SOAP APIs, Understanding of backend architecture, performance, security, scalability, Knowledge of Azure Cloud and application deployment, Familiarity with Azure DevOps and CI/CD processes, Experience with modern web development practices, Experience working in Agile/Scrum environments, Bachelor’s degree in Computer Science or equivalent experience, Strong English communication skills 📃 Skills: .NET, C#, Java, Kotlin, Angular, TypeScript, REST, SOAP, Azure, AzureDevOps, CI/CD 🏢 Description: Svitla Systems Inc. is looking for a Senior Full Stack Engineer with .NET, Java, and Angular for a full-time position (40 hours per week) in Europe. Our client is a leading global provider that gathers information and reports to enhance the environmental and social impacts on the business. A Senior Engineer must have strong backend expertise in .NET and Java/Kotlin, as well as frontend experience in Angular. Requirements: 5+ years of commercial experience in software development. Strong experience with .NET (C#) and Java/Kotlin backend development. Hands-on experience with Kotlin in backend environments. Knowledge of Angular and TypeScript. Understanding of designing and working with RESTful APIs and SOAP APIs. Solid understanding of backend architecture, including performance, security, and scalability. Knowledge of Azure Cloud, including deployment and scaling of applications. Familiarity with Azure DevOps and CI/CD processes. Strong understanding of modern web development practices. Experience working in Agile/Scrum environments. Strong communication skills in English. Bachelor’s degree in Computer Science or equivalent experience. Responsibilities: Work within an Agile team to design, estimate, develop, test, and deliver commercial software products. Develop and maintain backend services using .NET and Java/Kotlin. Design and implement secure, scalable RESTful APIs and services. Contribute to frontend development using Angular and TypeScript (~20–30%). Drive UI architecture and develop reusable UI components. Ensure best practices and design guidelines for UI and backend development. Write clean, maintainable, and efficient code for both client-side and server-side applications. Develop unit and integration tests; collaborate with QA to resolve issues. Collaborate with Product Owners and stakeholders to refine requirements and user stories. Contribute to project estimation, planning, timelines, and status updates. Provide technical guidance and mentorship where needed. We offer: US and EU projects based on advanced technologies. Competitive compensation based on skills and experience. Regular performance appraisals to support your growth. Flexibility in workspace, either remote or our welcoming office. Bonuses for article writing, public talks, and other activities. Generous time off, including vacation, national holidays, sick leaves, and family days. Personalized learning programs tailored to your interests and skill development. Free tech webinars and meetups organized by Svitla. Regular corporate online activities. Awesome team and a friendly, supportive community!

🏢 Summary: Full-time Senior Full Stack Engineer role building and scaling a high-throughput cloud platform for call tracking, marketing attribution, real-time analysis, and AI-driven workflows. The position involves hands-on development across backend and frontend systems, contributing to architecture, integrations, and production stability in a fast-moving startup environment. The engineer will work closely with founders to deliver scalable, reliable features with strong ownership and minimal oversight. 🗂️ Requirements: Senior-level full stack engineering experience in production environments, Strong backend development experience with Node.js, Strong frontend development experience with React or similar frameworks, Experience designing and maintaining complex web applications and APIs, Experience with relational databases and production data models, Knowledge of PostgreSQL or similar relational databases, Understanding of REST APIs and distributed system design, Experience integrating third-party APIs and external systems, Ability to debug and troubleshoot production systems, Experience balancing scalability, performance, and maintainability 📃 Skills: Node.js, React, JavaScript, PostgreSQL, SQL, REST, APIs, Redis, Python, HTML, CSS, Git, Cloud, AI 🏢 Description: Svitla Systems Inc. is looking for a Senior Full Stack Engineer for a full-time position (40 hours per week) in Europe. Our client is building an advanced cloud platform for call tracking, marketing attribution, real-time call analysis, and intelligent workflow automation in the pay-per-call and lead generation space. The company is in a hypergrowth phase and is actively scaling both its product platform and engineering capability. The platform combines high-throughput infrastructure, deterministic backend systems, real-time integrations, and AI-driven functionality to support transcription, summarization, extraction, scoring, and increasingly sophisticated agent-enabled workflows. You'll operate with a high degree of independence and make meaningful contributions across both backend and frontend systems. It is a hands-on senior engineering role for someone comfortable working directly with founders, shipping quickly, solving difficult production problems, and contributing to architectural and implementation decisions in a fast-moving startup environment. This role is best suited to an engineer with strong technical depth, sound judgment, product awareness, and the ability to move quickly without creating unnecessary technical debt. The right candidate will not need a heavy process, extensive oversight, or narrow task-by-task direction. This person should be able to step into an evolving system, understand the broader technical and business context, and deliver high-quality work in a practical, efficient way. The engineer will work closely with the founders and the rest of the engineering team, contributing directly to core product and platform development. The client has made it clear that they value engineers based on their performance in a real working environment, not on artificial interview exercises or theoretical problem-solving detached from production realities. Requirements: Strong experience as a Senior Full Stack Engineer, with clear ownership of both backend and frontend production systems. Solid experience in backend engineering with Node.js in real-world production environments. Expertise in frontend engineering with React or similar modern JavaScript frontend frameworks. Understanding of design, build, and maintain complex web applications and APIs that support meaningful business workflows. Strong experience working with relational databases, application data models, and production data access patterns. Knowledge of PostgreSQL or similar relational database technologies in production systems. In-depth understanding of REST APIs, asynchronous workflows, distributed integration patterns, and service-based application design. Experience integrating with third-party APIs and external systems in production environments. Ability to work effectively in evolving codebases and make good engineering decisions without requiring excessive structure or hand-holding. Expertise in debugging and troubleshooting across application logic, integrations, and production issues. Ability to balance delivery speed with long-term maintainability in a startup or high-growth environment. Nice to have: Experience working in startup or hypergrowth environments where engineers are expected to take ownership and move quickly. Familiarity with Redis, caching strategies, job processing, or event-driven application behavior. Exposure to Python and collaboration with AI or data-oriented systems. Experience building or supporting systems with high throughput, near-real-time workflows, or operationally sensitive business logic. Background in AdTech, MarTech, call tracking, attribution platforms, lead generation systems, or analytics-heavy products. Experience building internal operational tooling and admin workflows for technical or business users. Exposure to cloud-native environments and scalable distributed systems. Experience collaborating closely with technical founders, product leadership, or senior engineering stakeholders. Responsibilities: Design, build, and maintain production-grade application features across both backend and frontend systems, with strong attention to scalability, performance, reliability, and maintainability. Develop backend services and APIs using Node.js to support platform capabilities such as workflow orchestration, system integrations, feature logic, internal tooling, and real-time operational processing. Build and enhance frontend applications using React or similar modern frontend technologies to support dashboards, management interfaces, internal tools, and user-facing platform capabilities. Take ownership of significant technical areas and deliver solutions with minimal day-to-day oversight, while collaborating closely with founders and other senior engineers. Work on systems that support high-volume workflows, external integrations, and operationally important product capabilities where responsiveness and reliability matter. Implement and maintain integrations with external partner platforms, APIs, and data-driven systems, including CRM platforms, call-tracking systems, and other third-party services that are central to the product ecosystem. Contribute to architectural discussions and technical decisions related to application structure, data flow, performance optimization, maintainability, and production stability. Investigate and resolve production bottlenecks, system issues, and integration challenges in a practical, efficient manner. Collaborate with AI and data engineering team members where needed to connect backend and frontend product capabilities with intelligent workflows such as transcription, data extraction, scoring, or analytics-driven features. Help establish sound engineering patterns and raise the quality bar as the team scales, including code quality, implementation discipline, and pragmatic technical decision-making. Participate in a fast-moving engineering culture where new features, experiments, and improvements are shipped continuously. We offer: US and EU projects based on advanced technologies. Competitive compensation based on skills and experience. Regular performance appraisals to support your growth. Flexibility in workspace, either remote or our welcoming office. Bonuses for article writing, public talks, and other activities. Generous time off, including vacation, national holidays, sick leaves, and family days. Personalized learning programs tailored to your interests and skill development. Free tech webinars and meetups organized by Svitla. Regular corporate online activities. Awesome team and a friendly, supportive community!

🏢 Summary: Full-time Senior/Staff Full-Stack Engineer role focused on building an AI-enabled operational monitoring and decision-support platform for cold-chain logistics. The position involves hands-on architecture design, backend and frontend development, and leadership in creating scalable, event-driven AWS cloud systems. The engineer will shape technical standards, integrate IoT and analytics data, and deliver secure, high-availability applications in an evolving, early-stage environment. 🗂️ Requirements: Bachelor's degree in Computer Science, Computer Engineering, or similar, 8+ years of software engineering experience, Strong proficiency in Python for backend and serverless development, Commercial experience with Angular and/or React, Experience with high-load and scalable systems, Hands-on experience with AWS Amplify, Experience designing and consuming GraphQL and RESTful APIs, Deep knowledge of AWS services (Lambda, API Gateway, DynamoDB, S3, Step Functions, CloudWatch, Secrets Manager), Experience with relational and NoSQL databases, Experience with event-driven architectures and messaging systems, Experience with caching technologies, Understanding of application security (OAuth2, JWT, API security best practices), Experience with backend and frontend testing frameworks, Experience with Infrastructure as Code and Docker, Experience designing and maintaining CI/CD pipelines, Knowledge of HIPAA or HITRUST compliance requirements 📃 Skills: Python, Angular, React, TypeScript, AWS, Lambda, FastAPI, API Gateway, DynamoDB, S3, StepFunctions, CloudWatch, SecretsManager, AppSync, GraphQL, REST, PostgreSQL, SQS, SNS, EventBridge, Kafka, Redis, ElastiCache, OAuth2, JWT, Cognito, pytest, Jasmine, Karma, Cypress, Playwright, Terraform, CloudFormation, CDK, Docker, GitHubActions, CodePipeline, Amplify 🏢 Description: Svitla Systems Inc. is looking for a Senior/Staff Full-Stack Engineer(Python/Angular/React) for a full-time position (40 hours per week) in Europe. Our client is a global developer of technology platforms that develop temperature control products. You'll serve as the anchor engineer for a new AI-enabled operational monitoring and decision-support platform in the cold-chain shipping space. It is a senior, hands-on leadership role for a builder who can help shape the initial architecture, define engineering standards, and lead the technical implementation of a platform that integrates IoT telemetry, shipment workflow data, operational analytics, and future AI-driven capabilities. It's not a maintenance role, nor is it a narrowly defined feature factory position. This individual must be comfortable operating in an early-stage environment where requirements are evolving, business priorities are closely tied to real-world operational outcomes, and the engineering team must help translate business and logistics workflows into scalable software systems. The right candidate will be equally comfortable discussing architecture with technical stakeholders, refining platform direction with business leadership, building backend APIs, and guiding the structure of internal operational dashboards and exception-management tools. Requirements: Bachelor's degree in Computer Science, Computer Engineering, or similar 8+ years of software engineering experience with meaningful depth in both backend and frontend development. You should be strong in at least one side and comfortable contributing to the other. Strong proficiency in Python for backend and serverless development (Lambda, FastAPI, or similar). Experience with front end technologies (Angular and/or React) Commercial experience with high-load systems and scaling systems Hands-on experience with AWS Amplify for hosting, authentication, and connecting frontend applications to cloud services. Strong experience designing, building, and consuming both GraphQL APIs (AWS AppSync preferred) and RESTful APIs. Understanding of query optimization, subscriptions, versioning, and documentation (OpenAPI/Swagger). Deep knowledge of AWS services, including Lambda, API Gateway, DynamoDB, S3,Step Functions, CloudWatch, and Secrets Manager. Experience with relational and NoSQL databases (e.g., PostgreSQL, DynamoDB). Experience building event-driven systems using message queues and streaming services (SQS, SNS, EventBridge, Kafka). Familiarity with caching layers like Redis or ElastiCache. Solid understanding of security across the stack, including OAuth 2.0, JWT, API rat limiting, input validation, XSS prevention, CSRF protection, and secure token storage on the client side. Experience building test suites on both sides of the stack. Backend testing with pytest or similar, frontend testing with Jasmine, Karma, Cypress, Playwright, or similar. Experience with frontend performance profiling, Core Web Vitals optimization, and bundle analysis is a plus. Experience collaborating with stakeholders to build data pipelines, or integrate AI-driven features into production systems. Working knowledge of HIPAA or HITRUST compliance requirements for healthcare applications, including audit logging, PHI handling, data encryption, and secure session management. Comfortable with Infrastructure as Code (Terraform, CloudFormation, or CDK) and containerization (Docker). Experience with CI/CD pipeline design and implementation (GitHub Actions, AWS CodePipeline, Amplify CI/CD, or similar). Strong analytical and problem-solving skills with a focus on delivering polished user experiences backed by reliable infrastructure. Excellent communication skills and experience working in Agile environments. Responsibilities: Design, develop, and maintain fullstack applications with Python on the backend and Angular with TypeScript on the frontend, all deployed on AWS. Build and optimize serverless backend services using AWS Lambda, API Gateway, DynamoDB, S3, and Step Functions. Develop responsive, accessible frontend interfaces using Angular, with AWS Amplify for hosting, authentication (Cognito), and API integration. Design and integrate both GraphQL (AppSync) and RESTful APIs, handling everythin from backend implementation to frontend consumption, ensuring efficient data fetching, error handling, and state management. Architect data models, database schemas, and service-to-service communication patterns for complex business domains. Build and maintain event-driven architectures using SQS, SNS, EventBridge, o similar messaging services to support reliable, decoupled system communication. Implement caching strategies on both the backend (Redis, ElastiCache) and frontend (query caching, local state) to improve performance across the stack. Design and implement secure authentication and authorization flows using OAuth 2.0, JWT, and AWS Cognito, covering both server-side validation and client-side token management. Own features end-to-end, from database schema and API design through to the Angular components and user interactions that bring them to life. Collaborate closely with product managers, backend engineers, frontend engineers, and data science/ML teams to define system architecture, UI/UX requirements, and technical approach. Develop scalable, multi-tier cloud architectures with a focus on high availability and disaster recovery. Implement and maintain CI/CD pipelines for both frontend and backend deployments using tools like GitHub Actions, AWS CodePipeline, Amplify CI/CD, or similar. Build and maintain comprehensive test suites across the stack, including backend unit and integration tests (pytest) and frontend testing (Jasmine, Karma, Cypress, or Playwright). Establish and maintain structured logging, monitoring dashboards, error tracking, and alerting to support production reliability and fast incident response across both backend services and frontend applications. Participate in on-call rotations and lead incident response when production issues arise, including root cause analysis and follow-up improvements. Conduct code reviews and mentor junior engineers, fostering a culture of continuous learning and quality. Design and integrate AI-driven solutions within cloud infrastructure, working closely with stakeholders, build data pipelines, and create intuitive interfaces for AI-powered features. Implement cost optimization strategies and FinOps practices to manage cloud spending effectively. Stay current with emerging AWS services, Angular ecosystem updates, frontend tooling, and industry trends to continuously improve the technology stack. Document development processes, system architecture, component libraries, and key decisions for knowledge sharing. We offer: US and EU projects based on advanced technologies. Competitive compensation based on skills and experience. Regular performance appraisals to support your growth. Flexibility in workspace, either remote or our welcoming office. Bonuses for article writing, public talks, and other activities. Generous time off, including vacation, national holidays, sick leaves, and family days. Personalized learning programs tailored to your interests and skill development. Free tech webinars and meetups organized by Svitla. Regular corporate online activities. Awesome team and a friendly, supportive community!

🏢 Summary: Full-time Senior Full Stack Software Engineer role focused on building and scaling backend systems for a large job marketplace platform. The position centers on developing and maintaining services that ingest and process job data from external sources while supporting automation and AI-driven initiatives. The role combines backend-heavy development with light frontend maintenance in a distributed EMEA-based setup. 🗂️ Requirements: Strong experience in Java backend development, Proficiency with Spring Boot for scalable services and microservices, Experience designing and developing REST APIs, Familiarity with gRPC communication, Experience with messaging systems such as Kafka or RabbitMQ, Advanced knowledge of MySQL, Experience with MongoDB, Experience building scalable backend systems, Ability to contribute to system design, Basic knowledge of React, Basic knowledge of JavaScript or TypeScript 📃 Skills: Java, Spring, SpringBoot, REST, gRPC, Kafka, RabbitMQ, MySQL, MongoDB, React, JavaScript, TypeScript, GraphQL, AI, Automation, Caching 🏢 Description: Svitla Systems Inc. is looking for a Senior Full Stack Software Engineer for a full-time position (40 hours per week) in Europe. Our client is one of the world’s largest and fastest-growing job sites. Project Overview: Marketplace Engineering, specifically within the Employer Jobs Platform (EJYPT), leads the Aggregation Teams responsible for collecting and ingesting indexed job data from various external sources, including XML feeds, scraped job sites, and the job sync API used by third-party partners. The core mission of this group is to increase both the number and coverage of jobs available on the site by continuously improving how jobs are discovered, ingested, and maintained across these external sources. Timezone Coverage: EMEA hours, as long as you can attend meetings up to 11 am CDT. Requirements: Strong experience in Java backend development. Knowledge of Spring Boot for building scalable backend services and microservices. Understanding of REST API design and development; familiarity with gRPC communication. Understanding of messaging systems such as Apache Kafka or RabbitMQ . Advanced knowledge of databases with MySQL (primary) and MongoDB . Experience building backend systems at scale and contributing to system design. 1+ years of experience working with React and JavaScript/TypeScript for maintaining existing frontend components. Nice to have: Exposure to GraphQL (light usage). Experience with AI or automation workflows . Familiarity with caching technologies such as Valky or similar caching solutions. Responsibilities: Maintain existing backend systems. Build new features. Support automation initiatives (AI-driven extraction/config). Potentially develop tooling for AI prompts/models. We offer: US and EU projects based on advanced technologies. Competitive compensation based on skills and experience. Regular performance appraisals to support your growth. Flexibility in workspace, either remote or our welcoming office. Bonuses for article writing, public talks, and other activities. Generous time off, including vacation, national holidays, sick leaves, and family days. Personalized learning programs tailored to your interests and skill development. Free tech webinars and meetups organized by Svitla. Regular corporate online activities. Awesome team and a friendly, supportive community!

🏢 Summary: Full-time Senior/Staff Full-Stack Engineer role focused on building and leading the architecture of an AI-enabled operational monitoring platform in the cold-chain logistics domain. The position involves hands-on development with Python and Angular on AWS, designing scalable, event-driven, and serverless systems. The engineer will define technical standards, implement cloud-native solutions, and integrate IoT, analytics, and AI-driven capabilities. 🗂️ Requirements: Bachelor’s degree in Computer Science, Computer Engineering, or similar, 8+ years of full-stack software engineering experience, Strong proficiency in Python for backend and serverless development, Solid proficiency in Angular (v14+) and TypeScript, Experience with AWS Amplify for hosting and authentication, Experience designing and consuming GraphQL and REST APIs, Deep knowledge of AWS services (Lambda, API Gateway, DynamoDB, S3, Step Functions, CloudWatch, Secrets Manager), Experience with relational and NoSQL databases, Experience building event-driven systems with messaging/streaming services, Familiarity with caching systems, Knowledge of OAuth 2.0 and JWT-based authentication, Experience building backend and frontend test suites, Experience with Infrastructure as Code and containerization, Experience designing and implementing CI/CD pipelines, Working knowledge of HIPAA or HITRUST compliance 📃 Skills: Python, Angular, TypeScript, RxJS, AWS, Lambda, FastAPI, Amplify, AppSync, GraphQL, REST, API Gateway, DynamoDB, S3, StepFunctions, CloudWatch, SecretsManager, PostgreSQL, SQS, SNS, EventBridge, Kafka, Redis, ElastiCache, OAuth2, JWT, Cognito, pytest, Jasmine, Karma, Cypress, Playwright, Terraform, CloudFormation, CDK, Docker, GitHubActions, CodePipeline 🏢 Description: Svitla Systems Inc. is looking for a Senior/Staff Full-Stack Engineer(Python/Angular) for a full-time position (40 hours per week) in Europe . Our client is a global developer of technology platforms that develop temperature control products. You'll serve as the anchor engineer for a new AI-enabled operational monitoring and decision-support platform in the cold-chain shipping space. It is a senior, hands-on leadership role for a builder who can help shape the initial architecture, define engineering standards, and lead the technical implementation of a platform that integrates IoT telemetry, shipment workflow data, operational analytics, and future AI-driven capabilities. It's not a maintenance role, nor is it a narrowly defined feature factory position. This individual must be comfortable operating in an early-stage environment where requirements are evolving, business priorities are closely tied to real-world operational outcomes, and the engineering team must help translate business and logistics workflows into scalable software systems. The right candidate will be equally comfortable discussing architecture with technical stakeholders, refining platform direction with business leadership, building backend APIs, and guiding the structure of internal operational dashboards and exception-management tools. This role requires working hours with overlap till 7:00 PM-8:00 PM CET Requirements : Bachelor's degree in Computer Science, Computer Engineering, or similar 8+ years of software engineering experience with meaningful depth in both backend and frontend development. You should be strong in at least one side and comfortable contributing to the other. Strong proficiency in Python for backend and serverless development (Lambda, FastAPI, or similar). Experience with front end technologies (Angular and/or React) Commercial experience with high-load systems and scaling systems Hands-on experience with AWS Amplify for hosting, authentication, and connecting frontend applications to cloud services. Strong experience designing, building, and consuming both GraphQL APIs (AWS AppSync preferred) and RESTful APIs. Understanding of query optimization, subscriptions, versioning, and documentation (OpenAPI/Swagger). Deep knowledge of AWS services, including Lambda, API Gateway, DynamoDB, S3,Step Functions, CloudWatch, and Secrets Manager. Experience with relational and NoSQL databases (e.g., PostgreSQL, DynamoDB). Experience building event-driven systems using message queues and streaming services (SQS, SNS, EventBridge, Kafka). Familiarity with caching layers like Redis or ElastiCache. Solid understanding of security across the stack, including OAuth 2.0, JWT, API rat limiting, input validation, XSS prevention, CSRF protection, and secure token storage on the client side. Experience building test suites on both sides of the stack. Backend testing with pytest or similar, frontend testing with Jasmine, Karma, Cypress, Playwright, or similar. Experience with frontend performance profiling, Core Web Vitals optimization, and bundle analysis is a plus. Experience collaborating with stakeholders to build data pipelines, or integrate AI-driven features into production systems. Working knowledge of HIPAA or HITRUST compliance requirements for healthcare applications, including audit logging, PHI handling, data encryption, and secure session management. Comfortable with Infrastructure as Code (Terraform, CloudFormation, or CDK) and containerization (Docker). Experience with CI/CD pipeline design and implementation (GitHub Actions, AWS CodePipeline, Amplify CI/CD, or similar). Strong analytical and problem-solving skills with a focus on delivering polished user experiences backed by reliable infrastructure. Excellent communication skills and experience working in Agile environments. Responsibilities: Design, develop, and maintain fullstack applications, all deployed on AWS. Build and optimize serverless backend services using AWS Lambda, API Gateway, DynamoDB, S3, and Step Functions. Develop responsive, accessible frontend interfaces using Angular, with AWS Amplify for hosting, authentication (Cognito), and API integration. Design and integrate both GraphQL (AppSync) and RESTful APIs, handling everythin from backend implementation to frontend consumption, ensuring efficient data fetching, error handling, and state management. Architect data models, database schemas, and service-to-service communication patterns for complex business domains. Build and maintain event-driven architectures using SQS, SNS, EventBridge, o similar messaging services to support reliable, decoupled system communication. Implement caching strategies on both the backend (Redis, ElastiCache) and frontend (query caching, local state) to improve performance across the stack. Design and implement secure authentication and authorization flows using OAuth 2.0, JWT, and AWS Cognito, covering both server-side validation and client-side token management. Own features end-to-end, from database schema and API design through to the Angular components and user interactions that bring them to life. Collaborate closely with product managers, backend engineers, frontend engineers, and data science/ML teams to define system architecture, UI/UX requirements, and technical approach. Develop scalable, multi-tier cloud architectures with a focus on high availability and disaster recovery. Implement and maintain CI/CD pipelines for both frontend and backend deployments using tools like GitHub Actions, AWS CodePipeline, Amplify CI/CD, or similar. Build and maintain comprehensive test suites across the stack, including backend unit and integration tests (pytest) and frontend testing (Jasmine, Karma, Cypress, or Playwright). Establish and maintain structured logging, monitoring dashboards, error tracking, and alerting to support production reliability and fast incident response across both backend services and frontend applications. Participate in on-call rotations and lead incident response when production issues arise, including root cause analysis and follow-up improvements. Conduct code reviews and mentor junior engineers, fostering a culture of continuous learning and quality. Design and integrate AI-driven solutions within cloud infrastructure, working closely with stakeholders, build data pipelines, and create intuitive interfaces for AI-powered features. Implement cost optimization strategies and FinOps practices to manage cloud spending effectively. Stay current with emerging AWS services, Angular ecosystem updates, frontend tooling, and industry trends to continuously improve the technology stack. Document development processes, system architecture, component libraries, and key decisions for knowledge sharing. We offer US and EU projects based on advanced technologies. Competitive compensation based on skills and experience. Regular performance appraisals to support your growth. Flexibility in workspace, either remote or our welcoming office. Bonuses for article writing, public talks, other activities Generous time off, including vacation, national holidays, sick leaves, and family days. Personalized learning programs tailored to your interests and skill development. Free tech webinars and meetups organized by Svitla. Regular corporate online activities. Awesome team and a friendly, supportive community!

🏢 Summary: Full Stack Architect role focused on building and optimizing data-intensive applications using React and .NET, with strong emphasis on AWS-based infrastructure and scalable architecture. The position involves designing, developing, and maintaining full-stack solutions, optimizing MySQL and Elasticsearch data layers, and managing containerized deployments with ECS and Kubernetes. The role requires hands-on architectural improvements, performance tuning, and end-to-end ownership from development to production deployment. 🗂️ Requirements: Bachelor’s degree in Computer Science or related field or equivalent experience, Minimum 5 years of experience in front-end and application development, Strong proficiency in JavaScript and React, Proficiency in .NET and Microsoft development tools, Strong experience with MySQL 8 including optimization and schema design, Hands-on experience with Elasticsearch, Deep understanding of AWS infrastructure and core services, Experience with ECS and Kubernetes for container orchestration, Experience with Docker, Expertise in responsive web design and cross-browser compatibility, Experience building data-intensive and scalable applications, Experience working in Agile environments 📃 Skills: JavaScript, React, .NET, MySQL, Elasticsearch, AWS, ECS, Kubernetes, Docker, VisualStudio, VSCode, HTML, CSS, Agile 🏢 Description: Svitla Systems Inc. is looking for a Full Stack Architect with React and .NET for a full-time position (40 hours per week) in Europe. Our client specializes in delivering digital forensic and incident response solutions tailored for businesses, public safety organizations, and service providers engaged in the investigation of cybercrimes. Requirements: Education: Associate/Bachelor's/Master's degree in Computer Science or a related field, or equivalent professional experience. Experience: Minimum of 5 years in front-end development, UI design, and application development. Tech Stack: Fluency in JavaScript and React . Proficiency in the Microsoft/.NET stack and development lifecycle tooling (Visual Studio / VS Code). Strong experience with MySQL 8 (optimization, schema design, and complex queries). Hands-on experience with Elasticsearch for full-text search and analytics. Infrastructure & DevOps: Deep understanding of AWS infrastructure and core services. Experience deploying and managing applications using ECS (Elastic Container Service) and K8S (Kubernetes) . Familiarity with Docker and container orchestration. Design & Standards: Expertise in responsive design for both mobile and desktop views. In-depth knowledge of cross-browser compatibility and modern web standards. Soft Skills & Methodology: Experience in Agile development methodologies. Ability to work independently and within cross-functional teams to produce high-quality deliverables. Proven track record of building data-intensive applications with a focus on performance and scalability. Responsibilities: Full-Stack Development: Develop and maintain complex full-stack applications, ensuring seamless integration between React front-ends and .NET back-ends. System Analysis: Analyze the current application stack, identifying bottlenecks in data-intensive workflows and recommending architectural improvements. Infrastructure Management: Implement and manage scalable solutions on AWS , leveraging ECS/K8S for container orchestration and ensuring high availability. Data Strategy: Architect and optimize data storage solutions using MySQL 8 and Elasticsearch to handle large-scale datasets efficiently. Introspection & Monitoring: Help implement tools to provide system introspection, logging, and performance monitoring across the distributed stack. Collaboration: Work closely with cross-functional teams to bring software solutions from initial concept to production deployment. Code Quality: Write clean, efficient, and well-documented code, adhering to industry best practices and internal coding standards. Innovation: Stay up-to-date with emerging technologies (particularly in the AWS and CNCF ecosystems) to suggest process enhancements and technical upgrades. Execution: Meet required schedules and release cycle timelines in a fast-paced environment. Adaptability: Rapidly learn and integrate new business models, concepts, and technologies into the existing ecosystem.

🏢 Summary: Full-time Senior Front-End Engineer (ExtJS) role focused on developing and maintaining a SaaS application in an Agile/Scrum environment. The position involves technical design, implementation, refactoring, and unit testing of front-end features, with a strong emphasis on Ext JS expertise. The role also includes contributing to architectural decisions and mentoring other engineers. 🗂️ Requirements: Strong knowledge of Ext JS (version 7 or minimum 5 years of experience), Experience in front-end web development, Proficiency in using an IDE (preferably PhpStorm), Knowledge of software design patterns, Understanding of software development best practices, Ability to work in Scrum/Agile environment, Experience with code analysis and refactoring, Ability to design, build, and unit test features 📃 Skills: ExtJS, JavaScript, HTML, CSS, PhpStorm, SaaS, Scrum, Agile, IDE, UnitTesting, Refactoring 🏢 Description: Svitla Systems Inc. is looking for a Senior Front-End Engineer (ExtJS) for a full-time position (40 hours per week) in Poland . Our client is a leading global provider that involves gathering information and reporting to enhance the environmental and social impacts on the business. Requirements Strong knowledge of Ext JS (version 7 or at least 5 years of experience). Understanding of web development using an IDE (ideally PhpStorm). Familiarity with current trends in software development. Knowledge of software design patterns and best practices. Nice to have Experience optimizing applications for performance. Experience in SaaS product development. Understanding of Scrum/Agile methodologies. Responsibilities Take part in Scrum/Agile-based development of a SaaS Application. Provide technical design, build, and unit testing for new features. Conduct analysis and refactoring of existing source code. Analyze requirements, suggest concepts, and assess development efforts. Establish yourself as a Subject Matter Expert. Mentor other engineers. We offer US and EU projects based on advanced technologies. Competitive compensation based on skills and experience. Regular performance appraisals to support your growth. Flexibility in workspace, either remote or our welcoming office. Bonuses for article writing, public talks, and other activities. Generous time off, including vacation, national holidays, sick leaves, and family days. Personalized learning programs tailored to your interests and skill development. Free tech webinars and meetups organized by Svitla. Regular corporate online activities. Awesome team and a friendly, supportive community!

🏢 Summary: Full-time Senior Software Engineer role focused on backend development and system integrations for a large-scale job platform. The position involves API integrations, client and partner migrations, and backend services supporting UI applications, with overlap until 19:00–20:00 CET. The role emphasizes independent work on platform transitions and distributed systems. 🗂️ Requirements: Strong Java backend development experience, Experience building and integrating APIs, Experience with Kafka or other messaging/event streaming systems, Experience with MySQL or other relational databases, Experience with NoSQL databases (e.g., DynamoDB), Experience with system integrations or platform migrations, Ability to develop backend services supporting UI applications, Ability to work independently and proactively 📃 Skills: Java, Kafka, MySQL, DynamoDB, SQL, NoSQL, APIs, AWS 🏢 Description: Svitla Systems Inc. is looking for a Senior Software Engineer for a full-time position (40 hours per week) in Europe. Our client is one of the world’s largest and fastest-growing job sites. Overlap till 19:00 - 20:00 CET. Requirements Strong Java backend development experience. Experience building and integrating APIs. Experience with Kafka or other messaging/event streaming systems. Experience with MySQL or other relational databases. Experience working with NoSQL databases (e.g., DynamoDB). Experience working on system integrations or platform migrations. Ability to work on backend services that support UI applications. Work independently, take proactive steps, not just execute on steps. Nice to have Experience with AWS (especially DynamoDB or cloud-native services). Some AI tools experience - Optional, not required. Responsibilities Client and partner migrations, codebase transitions, and integrating systems through API calls. Perform client-side migrations, including: Updating API calls (old → new system), working across multiple client codebases, supporting pipeline / ramp issues. We offer US and EU projects based on advanced technologies. Competitive compensation based on skills and experience. Regular performance appraisals to support your growth. Flexibility in workspace, either remote or our welcoming office. Bonuses for article writing, public talks, and other activities. Generous time off, including vacation, national holidays, sick leaves, and family days. Personalized learning programs tailored to your interests and skill development. Free tech webinars and meetups organized by Svitla. Regular corporate online activities. Awesome team and a friendly, supportive community!

🏢 Summary: Full-time Senior Ruby Developer role focused on building, maintaining, and optimizing web applications using Ruby on Rails. The position involves implementing new features, maintaining existing systems, writing and testing code, and contributing to CI/CD and infrastructure improvements. The role requires strong backend expertise and collaboration within an agile development process. 🗂️ Requirements: 5+ years of Ruby on Rails experience, Strong knowledge of Ruby on Rails framework, Understanding of RESTful APIs, Knowledge of HTML and CSS, Experience with JSON, Experience with SQL and relational databases, Experience with PostgreSQL, Experience writing tests with RSpec, Experience with TDD, Experience with Git and GitHub, Experience with CI/CD processes, Experience with server infrastructure management 📃 Skills: Ruby, Rails, REST, HTML, CSS, JSON, SQL, PostgreSQL, RSpec, TDD, Git, GitHub, CI/CD 🏢 Description: Svitla Systems Inc. is looking for a Senior Ruby Developer for a full-time position (40 hours per week) in Europe. Requirements 5+ years of hands‐on experience with Ruby on Rails. Strong, in‐depth knowledge of Ruby on Rails framework. Solid understanding of RESTful APIs. Strong knowledge of HTML/HTML5, CSS/CSS3, JSON. Experience working with relational databases and SQL, preferably PostgreSQL. Strong experience writing tests using RSpec. Practical experience with test‐driven development (TDD). Experience with Git and GitHub. Result‐oriented mindset with strong problem‐solving skills. React.js and TypeScript experience is a plus, but not required. Responsibilities Implementation of new features in existing & future web applications. Maintenance & debugging of currently running web applications. Participation in planning meetings/calls, review/demo meetings/calls, and backlog refinement meetings/calls. Testing of changes made in scope of user stories you work on, to make sure that implementation was done correctly. Adjustments to existing CI/CD processes. Occasional changes to server infrastructure, server infrastructure optimisation. We offer US and EU projects based on advanced technologies. Competitive compensation based on skills and experience. Regular performance appraisals to support your growth. Flexibility in workspace, either remote or our welcoming office. Bonuses for article writing, public talks, and other activities. Generous time off, including vacation, national holidays, sick leaves, and family days. Personalized learning programs tailored to your interests and skill development. Free tech webinars and meetups organized by Svitla. Regular corporate online activities. Awesome team and a friendly, supportive community!