Senior Node.js Engineer

🏢 Summary: Backend Engineer role focused on building and optimizing large-scale, high-performance data processing systems within an AI-driven behavioral data platform. The position involves designing distributed architectures, processing massive datasets, and ensuring scalability and reliability in cloud environments. You will work with modern JVM and cloud-native technologies to deliver production-grade solutions for enterprise customers. 🗂️ Requirements: Proficiency in Scala or other JVM language, Experience with Rust or willingness to learn, Strong knowledge of Kafka, Strong knowledge of Kubernetes, Experience with Akka or ZIO or Cats, Experience with SQL databases, Experience with NoSQL databases, Hands-on use of AI coding tools, Ability to design and scale distributed systems, Strong troubleshooting and debugging skills 📃 Skills: Scala, JVM, Rust, Kafka, Kubernetes, Akka, ZIO, Cats, SQL, NoSQL, Azure, GCP, AKS, ElasticSearch, OpenSearch, Clickhouse, OpenTelemetry, Jaeger, Java, Python 🏢 Description: We successfully deliver an all-in-one tool - Synerise (YouTube link) . An ever-evolving behavioral data platform, enhanced by AI to generate outstanding ROI in more than 30 markets for industry leaders in Retail, Banking, eCommerce, Automotive, Insurance, and Telco, processing more than 150 billion transactions annually. However, we don't limit ourselves solely to this solution. We're building BaseModel (website link) - a foundation model for behavioral data embedded within a novel platform for enterprise Data Science teams, that is another step on our path to create innovation in AI and demonstrate its potential for the business world. ‍ Having such great solutions, we are looking for a highly motivated Backend Engineer to join our brave and brilliant Synerise Team. See if you fit our diverse and dynamic environment, where we constantly evolve together with the growth of our clients. About the team Our Backend Team works primarily with Scala , Apache Kafka , ElasticSearch , Clickhouse , Kubernetes , and cloud environments ( Azure and GCP ). Observability is a first-class concern: distributed tracing (OpenTelemetry, Jaeger), structured logging, and rich metrics are embedded into how we design and operate services. What will you do on a daily basis? Develop architecture and design patterns to process and store high volume data sets. Develop software with a core focus around optimisation and performance. Translate complex functional and technical requirements into detailed design. Perform analysis of vast data stores and uncover insights. What will make us a perfect match? Programming skills in Scala or other JVM language. Programming skills in Rust or willingness to learn. Solid understanding of Kafka and Kubernetes. Experience with (at least one): Akka / ZIO / Cats. Experience with SQL and NoSQL databases. Hands-on experience using AI coding (e.g., Claude Code, Cursor, GitHub Copilot) as part of daily software engineering work. Capacity to plan and scale systems to keep up with incredible growth. Excellent troubleshooting and debugging skills. A passion for building tools and automating everything. Strong analytical skills. What will convince us even more? Solid understanding of JVM internals (GC, profiling, heap and thread dumps). Experience designing and operating microservices architectures . Hands-on experience working in cloud environments ( Azure and/or GCP ), preferably with AKS. Working knowledge of Java or Python. Knowledge of ElasticSearch/Opensearch. Basic knowledge of AI/ML concepts. What can we provide for you? Work on a production-grade, large-scale system used by enterprise customers worldwide. Real technical challenges around performance, data volume, and distributed systems. Opportunities for continuous technical growth and deeper ownership over system design. Support from experienced engineers and a strong engineering culture. Influence on architectural and technical decisions within your team.

🏢 Summary: Backend Engineer role focused on building and optimizing high‑performance, large‑scale data processing systems within an AI‑driven behavioral data platform. The position involves designing architectures for high‑volume data, developing distributed services, and ensuring scalability and performance in cloud environments. You will work with modern JVM technologies, streaming platforms, and observability tools in a production‑grade system used by enterprise clients. 🗂️ Requirements: Proficiency in Scala or other JVM language, Willingness to program in Rust, Solid understanding of Kafka, Solid understanding of Kubernetes, Experience with Akka or ZIO or Cats, Experience with SQL databases, Experience with NoSQL databases, Hands-on use of AI coding tools in daily development, Ability to design and scale high-volume distributed systems, Strong debugging and troubleshooting skills 📃 Skills: Scala, JVM, Rust, Kafka, Kubernetes, Akka, ZIO, Cats, SQL, NoSQL, Azure, GCP, ElasticSearch, Clickhouse, OpenTelemetry, Jaeger, GitHubCopilot, Claude, Cursor 🏢 Description: We successfully deliver an all-in-one tool - Synerise (YouTube link) . An ever-evolving behavioral data platform, enhanced by AI to generate outstanding ROI in more than 30 markets for industry leaders in Retail, Banking, eCommerce, Automotive, Insurance, and Telco, processing more than 150 billion transactions annually. However, we don't limit ourselves solely to this solution. We're building BaseModel (website link) - a foundation model for behavioral data embedded within a novel platform for enterprise Data Science teams, that is another step on our path to create innovation in AI and demonstrate its potential for the business world. ‍ Having such great solutions, we are looking for a highly motivated Backend Engineer to join our brave and brilliant Synerise Team. See if you fit our diverse and dynamic environment, where we constantly evolve together with the growth of our clients. About the team Our Backend Team works primarily with Scala , Apache Kafka , ElasticSearch , Clickhouse , Kubernetes , and cloud environments ( Azure and GCP ). Observability is a first-class concern: distributed tracing (OpenTelemetry, Jaeger), structured logging, and rich metrics are embedded into how we design and operate services. What will you do on a daily basis? Develop architecture and design patterns to process and store high volume data sets. Develop software with a core focus around optimisation and performance. Translate complex functional and technical requirements into detailed design. Perform analysis of vast data stores and uncover insights. What will make us a perfect match? Programming skills in Scala or other JVM language. Programming skills in Rust or willingness to learn. Solid understanding of Kafka and Kubernetes. Experience with (at least one): Akka / ZIO / Cats. Experience with SQL and NoSQL databases. Hands-on experience using AI coding (e.g., Claude Code, Cursor, GitHub Copilot) as part of daily software engineering work. Capacity to plan and scale systems to keep up with incredible growth. Excellent troubleshooting and debugging skills. A passion for building tools and automating everything. Strong analytical skills. What will convince us even more? Solid understanding of JVM internals (GC, profiling, heap and thread dumps). Experience designing and operating microservices architectures . Hands-on experience working in cloud environments ( Azure and/or GCP ), preferably with AKS. Working knowledge of Java or Python. Knowledge of ElasticSearch/Opensearch. Basic knowledge of AI/ML concepts. What can we provide for you? Work on a production-grade, large-scale system used by enterprise customers worldwide. Real technical challenges around performance, data volume, and distributed systems. Opportunities for continuous technical growth and deeper ownership over system design. Support from experienced engineers and a strong engineering culture. Influence on architectural and technical decisions within your team.

🏢 Summary: The offer is for a Scala Software Engineer to build and scale high‑throughput, event‑driven backend systems processing tens of thousands of events per second in a distributed microservices environment. The role focuses on designing reliable, low‑latency data processing architectures using Scala and modern cloud‑native technologies. You will work on large‑scale behavioral data platforms with strong emphasis on performance, consistency, and observability. 🗂️ Requirements: Strong Scala experience in production, Experience with effect systems (Cats, ZIO, Akka or Pekko), Hands-on experience with event-driven systems in production, Deep knowledge of Apache Kafka, Practical experience with Kubernetes, Experience with SQL and NoSQL databases, Ability to design scalable distributed systems, Strong debugging skills in distributed environments, Experience using AI coding tools in daily development 📃 Skills: Scala, Kafka, ElasticSearch, ScyllaDB, Kubernetes, Azure, GCP, Cats, ZIO, Akka, Pekko, OpenTelemetry, Jaeger, SQL, NoSQL, JVM, Java, Rust, Python, Bash, ETL, CQRS, Microservices, GitHubCopilot, Claude, Cursor, AKS 🏢 Description: We successfully deliver an all-in-one tool - Synerise (YouTube link) . An ever-evolving behavioral data platform, enhanced by AI to generate outstanding ROI in more than 30 markets for industry leaders in Retail, Banking, eCommerce, Automotive, Insurance, and Telco, processing more than 150 billion transactions annually. However, we don't limit ourselves solely to this solution. We're building BaseModel (website link) - a foundation model for behavioral data embedded within a novel platform for enterprise Data Science teams, that is another step on our path to create innovation in AI and demonstrate its potential for the business world. ‍ Having such great solutions, we are looking for a highly motivated Scala Software Engineer to join our brave and brilliant Synerise Team. See if you fit our diverse and dynamic environment, where we constantly evolve together with the growth of our clients. About the team Our Backend Team works primarily with Scala , Apache Kafka , ElasticSearch , ScyllaDB , Kubernetes , and cloud environments ( Azure and GCP ). Observability is a first-class concern: distributed tracing (OpenTelemetry, Jaeger), structured logging, and rich metrics are embedded into how we design and operate services. The platform handles up to 28k API requests per second at peak , maintaining p95 latency below 100 ms . As part of the event processing and analytics team, you will work on systems that: Ingest and process high‑volume streams of customer behavior events from online and offline sources (peaks of 30k events per second ) Reliably store and organize event data for analytics and querying at scale Power analytical modules transforming raw events into actionable insights Must remain ordered, consistent, and reliable under heavy load Run in a distributed microservices architecture on Kubernetes We like to experiment and continuously improve. Backend and Frontend teams are supported by dedicated QA and Infrastructure teams, and AI coding assistants (such as Copilot and Claude) are part of our daily workflow — helping us move faster where it makes sense, without replacing engineering judgment. What will you do on a daily basis? Design architectures and patterns for processing and storing large-scale, high‑volume event data. Build backend software with a strong focus on performance, scalability, and reliability. Translate complex functional and technical requirements into robust system designs. Work with large datasets to ensure data correctness and meaningful analytics outcomes. Diagnose and troubleshoot issues in distributed, event-driven systems. Collaborate closely with other backend engineers, QA, and Infrastructure teams. What will make us a perfect match? Strong Scala skills with production experience using an effect system ( Cats Effect, ZIO, Akka/Pekko ). Hands-on experience designing or contributing to event-driven systems in production. Deep understanding of Apache Kafka , including partitioning, delivery guarantees, consumer groups, rebalancing, and lag. Practical knowledge of Kubernetes , sufficient to diagnose pod issues, resource limits, autoscaling, and networking. Experience working with both SQL and NoSQL databases , with a clear understanding of their trade-offs. Ability to design systems for scale: partitioning, sharding, backpressure, and tenant isolation. Strong debugging and troubleshooting skills in distributed environments. Hands-on experience using AI coding (e.g., Claude Code, Cursor, GitHub Copilot) as part of daily software engineering work. What will convince us even more? Solid understanding of JVM internals (GC, profiling, heap and thread dumps). Production experience with observability : distributed tracing, structured logs, and metrics. Experience designing and operating microservices architectures , with awareness of common pitfalls. Hands-on experience working in cloud environments ( Azure and/or GCP ), preferably with AKS. Working knowledge of Java or Rust. Experience with ETL pipelines , Python, or shell scripting. Contributions to open-source projects in the Scala or JVM ecosystem. Familiarity with event sourcing and CQRS. What can we provide for you? Work on a production-grade, large-scale system used by enterprise customers worldwide. Real technical challenges around performance, data volume, and distributed systems. Opportunities for continuous technical growth and deeper ownership over system design. Support from experienced engineers and a strong engineering culture. Influence on architectural and technical decisions within your team.

🏢 Summary: The offer is for a DevOps Engineer responsible for maintaining and developing production infrastructure for a large-scale, real-time, multi-tenant AI and big data platform. The role focuses on ensuring reliability, scalability, and automation of cloud-based systems while collaborating closely with backend engineers. It involves designing infrastructure solutions, improving CI/CD processes, and supporting high-traffic, data-intensive environments. 🗂️ Requirements: Experience with production systems in cloud environments (Azure preferred), Good knowledge of Linux systems, Understanding of basic networking concepts, Experience with CI/CD pipelines, Experience with Infrastructure as Code tools, Hands-on experience with Kubernetes or container platforms, Experience with automation of deployments and infrastructure provisioning, Experience with incident handling and root cause analysis, Hands-on use of AI coding tools in software engineering work 📃 Skills: Azure, Linux, Networking, CI/CD, IaC, Kubernetes, Containers, Kafka, Databases, Monitoring, Observability, Security, AI, Claude, Cursor, Copilot 🏢 Description: We successfully deliver an all-in-one tool - Synerise (YouTube link) . An ever-evolving behavioral data platform, enhanced by AI to generate outstanding ROI in more than 30 markets for industry leaders in Retail, Banking, eCommerce, Automotive, Insurance, and Telco, processing more than 150 billion transactions annually. However, we don't limit ourselves solely to this solution. We're building BaseModel (website link) - a foundation model for behavioral data embedded within a novel platform for enterprise Data Science teams, that is another step on our path to create innovation in AI and demonstrate its potential for the business world. ‍ Having such great solutions, we are looking for a highly motivated DevOps Engineer  to join our brave and brilliant Synerise Team. See if you fit our diverse and dynamic environment, where we constantly evolve together with the growth of our clients. ‍ What will you do on a daily basis? Maintain and develop production infrastructure for a large-scale, real-time multi-tenant platform. Work closely with backend engineers to support reliability, scalability, and availability of services. Implement and improve automation for deployments, infrastructure provisioning, and operational tasks. Participate in incident handling, root cause analysis, and post-incident improvements. Take responsibility of designing new infrastructure solutions and initiatives. What will make us a perfect match? Experience working with production systems in cloud environments (Azure preferred). Good understanding of Linux systems and basic networking concepts. Familiarity with CI/CD pipelines and Infrastructure as Code tools. Hands-on experience with Kubernetes or container-based platforms. Willingness to take responsibility for the quality and stability of systems you work on. Practical, problem-solving mindset and openness to learning new technologies. Hands-on experience using AI coding (e.g., Claude Code, Cursor, GitHub Copilot) as part of daily software engineering work. What will convince us even more? Exposure to data-heavy or event-driven systems (e.g. Kafka, multi-terabyte databases). Basic knowledge of monitoring, alerting, and observability practices and tooling. Interest in system performance, reliability, or cloud cost efficiency. Awareness of security considerations in cloud and infrastructure environments. Exposure to infrastructure handling large traffic volumes and data throughput. What can we provide for you? Work on a production-grade product used by enterprise customers in the AI and big data domain. Opportunity to grow technically while working with real-world, distributed systems at scale. Support from experienced engineers and space to take on more responsibility over time. Influence on day-to-day technical decisions within your team. Fully remote work model.

🏢 Summary: B2B contract opportunity for a Senior Node.js Developer to design, build, and maintain scalable backend applications and APIs across diverse software projects, including AI-driven and legacy modernization initiatives. The role focuses on high-quality Node.js development, architecture contribution, and cloud-based deployments in Agile teams. 🗂️ Requirements: 5+ years of experience in Node.js development, Experience with Express.js or NestJS frameworks, Strong knowledge of JavaScript and TypeScript, Understanding of asynchronous programming and event-driven architecture, Experience building and integrating RESTful APIs, Experience with SQL and NoSQL databases, Experience with cloud platforms (AWS, Azure, or GCP), Knowledge of CI/CD pipelines, Experience with version control systems, Experience working in Agile/Scrum teams, English level B2 or higher, Experience with AI technologies and AI-powered features development 📃 Skills: Node.js, Express.js, NestJS, JavaScript, TypeScript, REST, SQL, NoSQL, PostgreSQL, MySQL, MongoDB, AWS, Azure, GCP, CI/CD, Git, AI 🏢 Description: Who we are: We are Inspeerity (part of DevelopX group), engineering consultancy providing software development and consultancy. Our primary expertise is systems architecture and full stack development – from defining project requirements, to designing, building, and deploying software applications for web, backend, enterprise and mobile. We are crazy about technology, serious about people. About position: We are currently building our talent pool for future Senior Node.js Developer roles. As our company is expanding, you may have the opportunity to work on a variety of software solutions across multiple initiatives, including projects we will be delivering in the future, from building native AI solutions to modernizing legacy systems. If you enjoy collaborating in a skilled team and are committed to delivering top-notch software, we’d love to connect. We're not prescriptive about background. Whether you've worked in fintech, SaaS, e-commerce, or enterprise systems — what matters is that you've shipped production software at scale, cared about its reliability, and learned from what broke. TL;DR • Who: Senior Node.js Developer • Contract Type: B2B Framework Agreement • Salary range: Up to 150 PLN/h • Company: Software House What you’ll be doing: • Designing, implementing, and maintaining high-quality Node.js applications. • Developing backend components and APIs to support scalable software solutions. • Collaborating with cross-functional teams. • Reviewing and refactoring code to ensure maintainability, performance, and security. • Participating in technical design discussions and contributing to architecture decisions. • Writing and maintaining technical documentation for systems, APIs, and processes. • Supporting deployment and integration of applications in different environments. You will be the best fit if you have: • 5+ years of experience as a Node.js developer, preferably with exposure to frameworks such as Express.js , NestJS , or similar. • Strong understanding of JavaScript/TypeScript, asynchronous programming, and event-driven architecture. • Experience with RESTful APIs and web services integration. • Familiarity with SQL and NoSQL databases (e.g., PostgreSQL, MySQL, MongoDB). • Experience with cloud environments such as AWS, Azure, or GCP. • Knowledge of CI/CD pipelines and version control systems. • Strong problem-solving skills and ability to troubleshoot complex issues. • Experience working in Agile/Scrum teams and contributing to iterative development. • English level B2 or higher. • Experience with AI technologies, including using AI tools for development and building AI-powered features or applications. What we offer • Remote work or working from our Bialystok, Warsaw, Rzeszow offices. It's up to you! • Collaboration with experienced and engaged people who will appreciate your work and support you whenever you need it 😊 • Hybrid and flexible cooperation model based on a B2B Framework Agreement. • Great working conditions and best equipment: Dell or MacBook, your choice. Good to know: We don’t require a degree. We don’t do whiteboard puzzles or trick questions. Our interview process is practical: a technical conversation, and a chat about how you work. We value direct communication and intellectual curiosity. If you’re someone who gets excited debugging a tricky concurrency issue - not because you have to, but because you want to understand it — we’ll get along well.

🏢 Summary: Remote Senior Backend Node.js Developer role focused on building and scaling an event-driven microservices trading platform. The position involves end-to-end development, collaborating across product, QA, and DevOps to deliver high-performance, scalable trading solutions. B2B contract with overlap required with NYC working hours. 🗂️ Requirements: Bachelor’s Degree in Computer Science or related field, 3-5 years professional web application development experience, Expert-level Node.js knowledge, Expert-level TypeScript knowledge, Experience with distributed systems, Experience with Apache Kafka, Redis, Kubernetes, MongoDB, Experience with automated unit testing and TDD, Strong understanding of performance optimization and computational complexity, Knowledge of algorithms and design patterns, Fluent English (written and spoken) 📃 Skills: Node.js, TypeScript, Kafka, Redis, Kubernetes, MongoDB, Microservices, TDD, Algorithms, DesignPatterns, Web, DistributedSystems 🏢 Description: We are looking for a performance-driven backend Senior Node.js Developer who can help us bring our client's trading solutions to the next level of functionality, scalability, and user experience. They are actively developing a new event-driven microservices architecture to form a foundational platform for delivering new trading applications. You will be responsible for delivering software end-to-end , from liaising with product managers and designers, to coordinating across international development teams on engineering and architecture to working with QA and DevOps teams - all ultimately to deliver a quality, innovative product to the traders and investors who depend on the platform every day. Requirements: Fluent English language [both written and spoken] Education: at least Bachelor's Degree, preferably in Computer Science 3-5 years' professional web application development experience Expert-level Node.js and TypeScript knowledge, and curiosity to learn more Broad knowledge of web platform and technologies Superior analytical and problem-solving ability Effective communication skills to work with different teams across an international company Experience with modern distributed systems and infrastructure technologies, including Apache Kafka, Redis, Kubernetes, and MongoDB Automated unit testing and test-driven development Robust understanding of performance issues, computational complexity, and code optimization. Familiarity and implementation of industry-standard algorithms and design patterns Proactive and team player who can deliver in a high-pressure demanding environment Nest.js – nice to have Offer details: 100% remote job preferrably at least 4-5 hours overlap with NYC working hours B2B contract rate up to 50 USD/h net Don't hesitate and apply now!

🏢 Summary: Senior Node.js Engineer role focused on building and scaling a secure, high-performance FinTech platform used by businesses across Europe. The position involves designing distributed systems, developing backend and frontend components, and working within a distributed agile team using modern cloud and microservices architecture. The offer emphasizes technical leadership, code quality, and collaboration on complex financial solutions. 🗂️ Requirements: 5+ years Back-End development experience, 3+ years TypeScript experience, 4+ years Node.js experience, Experience designing distributed systems, Experience building secure and scalable systems, Strong AWS experience, Frontend development experience, Understanding of microservices architecture, Experience designing and maintaining APIs, Experience with REST and/or GraphQL APIs, Knowledge of DevOps practices, Knowledge of testing best practices, Upper-Intermediate English level 📃 Skills: Node.js, TypeScript, React, AWS, Microservices, REST, GraphQL, JavaScript, ES6, DevOps, API, Testing 🏢 Description: Are you ready to take on a key role in developing cutting-edge financial solutions? We are looking for a Senior Node.js Engineer to join our distributed agile team and work on a highly secure, scalable FinTech platform used by businesses across Europe. We at Sigma Software value innovation, technical excellence, and collaboration. This position offers the opportunity to work with modern technologies such as Node.js, TypeScript, React, AWS, and microservices architecture. You’ll have the chance to work on impactful projects, enjoy flexible working arrangements, and grow your expertise alongside talented professionals. CUSTOMER Our Customer is one of Europe’s fastest-growing FinTech companies, providing a comprehensive payment platform that integrates financial services into its products. Their solutions include account management, virtual cards, bank transfers, and other advanced features. The company is known for its innovative approach to simplifying financial operations for businesses, ensuring security, scalability, and user-centric design. PROJECT The project focuses on building and enhancing a secure, scalable, and user-friendly financial services platform used by businesses across Europe. The team is distributed and agile, with a strong emphasis on engineering best practices and code quality. Key Technologies: Node.js, TypeScript, React, AWS, Microservices, REST, GraphQL. RESPONSIBILITIES Design, develop, and implement large-scale software solutions using Node.js and React Ensure high quality and maintainability of code across all stages of development Collaborate closely with cross-functional teams to gain full context for complex tasks Adhere to engineering best practices, company policies, and client guidelines Provide mentorship, technical guidance, and coaching to less-experienced engineers Advocate for clean code principles, design patterns, and architectural best practices Design and maintain distributed and secure systems, ensuring scalability and performance Build and integrate APIs into the platform Work with AWS services and DevOps practices to ensure reliability and efficiency REQUIREMENTS Over 5 years of experience in Back-End software development At least 3 years of experience with TypeScript Over 4 years of experience working with Node.js Strong experience in designing distributed and secure systems Strong experience working with AWS Good Front-End development skills Good understanding of microservices architectures Experience in designing, building, and maintaining APIs Experience in building and consuming REST and/or GraphQL APIs Familiarity with DevOps practices Good knowledge of testing best practices At least an Upper-Intermediate level of English WILL BE A PLUS Experience with modern JavaScript and ES6 libraries PERSONAL PROFILE Proactive problem-solver with a strong sense of ownership Effective communicator and team collaborator Adaptable to changing priorities and requirements

🏢 Summary: Senior Node.js Engineer role focused on designing and developing a secure, scalable FinTech platform for European businesses. The position involves working in a distributed agile team using modern technologies to build and enhance financial services solutions. The offer emphasizes high-quality engineering practices, microservices architecture, and cloud-based infrastructure. 🗂️ Requirements: 5+ years Back-End development experience, 4+ years Node.js experience, 3+ years TypeScript experience, Experience designing distributed systems, Experience designing secure systems, Strong AWS experience, Front-End development skills, Understanding of microservices architecture, Experience designing and maintaining APIs, Experience with REST or GraphQL APIs, Familiarity with DevOps practices, Knowledge of testing best practices, Upper-Intermediate English level 📃 Skills: Node.js, TypeScript, React, AWS, Microservices, REST, GraphQL, JavaScript, ES6, DevOps, API, Testing 🏢 Description: Are you ready to take on a key role in developing cutting-edge financial solutions? We are looking for a Senior Node.js Engineer to join our distributed agile team and work on a highly secure, scalable FinTech platform used by businesses across Europe. We at Sigma Software value innovation, technical excellence, and collaboration. This position offers the opportunity to work with modern technologies such as Node.js, TypeScript, React, AWS, and microservices architecture. You’ll have the chance to work on impactful projects, enjoy flexible working arrangements, and grow your expertise alongside talented professionals. CUSTOMER Our Customer is one of Europe’s fastest-growing FinTech companies, providing a comprehensive payment platform that integrates financial services into its products. Their solutions include account management, virtual cards, bank transfers, and other advanced features. The company is known for its innovative approach to simplifying financial operations for businesses, ensuring security, scalability, and user-centric design. PROJECT The project focuses on building and enhancing a secure, scalable, and user-friendly financial services platform used by businesses across Europe. The team is distributed and agile, with a strong emphasis on engineering best practices and code quality. Key Technologies: Node.js, TypeScript, React, AWS, Microservices, REST, GraphQL. RESPONSIBILITIES Design, develop, and implement large-scale software solutions using Node.js and React Ensure high quality and maintainability of code across all stages of development Collaborate closely with cross-functional teams to gain full context for complex tasks Adhere to engineering best practices, company policies, and client guidelines Provide mentorship, technical guidance, and coaching to less-experienced engineers Advocate for clean code principles, design patterns, and architectural best practices Design and maintain distributed and secure systems, ensuring scalability and performance Build and integrate APIs into the platform Work with AWS services and DevOps practices to ensure reliability and efficiency REQUIREMENTS Over 5 years of experience in Back-End software development At least 3 years of experience with TypeScript Over 4 years of experience working with Node.js Strong experience in designing distributed and secure systems Strong experience working with AWS Good Front-End development skills Good understanding of microservices architectures Experience in designing, building, and maintaining APIs Experience in building and consuming REST and/or GraphQL APIs Familiarity with DevOps practices Good knowledge of testing best practices At least an Upper-Intermediate level of English WILL BE A PLUS Experience with modern JavaScript and ES6 libraries PERSONAL PROFILE Proactive problem-solver with a strong sense of ownership Effective communicator and team collaborator Adaptable to changing priorities and requirements

🏢 Summary: Product Designer role focused on designing complex SaaS and AI-driven data products for enterprise users, taking ownership from discovery to high-fidelity UI. The position involves solving ambiguous product problems, collaborating with cross-functional teams, and integrating AI tools into the design workflow. The goal is to create scalable, intuitive interfaces for data-heavy and automation-based platforms. 🗂️ Requirements: Minimum 3 years experience as Product Designer or UX/UI Designer, Experience designing complex SaaS or B2B digital products, Strong portfolio demonstrating problem-solving process and impact, Proficiency in Figma and modern product design workflows, Ability to independently handle ambiguous and complex problems, Solid understanding of UX fundamentals and interaction design, Experience collaborating with Product Managers and Engineers, Willingness to use AI tools in daily design workflow 📃 Skills: Figma, UX, UI, SaaS, B2B, AI, Analytics, Automation, Prototyping, Wireframing, DesignSystems, DataVisualization, InformationArchitecture, InteractionDesign, Usability, Accessibility 🏢 Description: Synerise is not just another tech company. We are building technology that helps businesses create fully personalized, AI-driven customer experiences at scale. Our platform combines data, analytics, automation, recommendations and AI to help companies better understand customer behavior and act on it in real time. We work with leading brands across Retail, Banking, eCommerce, Automotive, Insurance and Telco, operating in more than 30 markets and processing over 150 billion transactions annually. But we do not stop there. We are also building BaseModel.ai — a foundation model for behavioral data and a platform for enterprise Data Science teams. It is another step in our mission to turn complex behavioral data into practical, business-ready intelligence. To support this vision, we are looking for a Product Designer who can help us design complex, intelligent and highly usable products for business users. About the role As a Product Designer at Synerise, you will work on advanced SaaS products used by marketers, analysts, data teams and enterprise clients. This is not a role focused only on producing screens. We are looking for someone who can understand complex problems, structure ambiguity, explore different solution directions and take responsibility for the quality of the user experience. You will work closely with Product Managers, Engineers, UX Researchers and other Designers to turn product challenges into clear, useful and scalable interfaces. A big part of this role is independent problem-solving . We expect you to be able to move from a vague business or user need to a well-thought-out design proposal: by asking the right questions, analyzing context, challenging assumptions and creatively exploring solutions. We also expect AI tools to be a natural part of your design workflow. You do not need to use one specific tool, but you should be open to using AI to support research, ideation, analysis, prototyping, writing, synthesis or design exploration. Experience with AI-assisted design workflows will be a strong advantage. What will you do on a daily basis? Lead the design process in your product area: from discovery and problem framing to ideation, prototyping, validation and high-fidelity design. Translate complex product requirements into clear, intuitive and scalable user experiences. Collaborate with Product Managers and Engineers to define solutions that are valuable for users, feasible to build and aligned with business goals. Independently investigate product problems, identify opportunities and propose improvements instead of waiting for ready-made briefs. Design user flows, wireframes, prototypes, interaction models and final UI designs. Work with UX Researchers to turn qualitative and quantitative insights into better product decisions. Use AI tools as part of your design workflow to speed up exploration, support research, structure ideas, generate alternatives or improve communication. Contribute to the development and adoption of our Design System. Take ownership of user experience quality in your area of the product. Communicate design decisions clearly to stakeholders and development teams. Share knowledge, methods and good practices with other designers and team members. What will make us a perfect match? At least 3 years of experience as a Product Designer, UX/UI Designer or similar. Experience designing large, complex digital products , preferably SaaS, B2B platforms, analytics tools, marketing tools, data products or enterprise software. A strong portfolio showing not only final screens, but also your thinking process, problem-solving approach and impact. Very good practical knowledge of Figma and modern product design workflows. Ability to work independently with ambiguous, complex problems. Strong analytical and creative thinking skills. Ability to explore multiple solution directions before choosing the best one. Strong sense of ownership, accountability and attention to quality. Good understanding of UX fundamentals: information architecture, interaction design, usability, accessibility and interface patterns. Ability to collaborate with Product, Engineering and Research. Good communication skills and openness to feedback. Willingness to use AI tools as part of your everyday design workflow. Curiosity and motivation to learn about AI, data, automation and complex product ecosystems. What will convince us even more? Experience working on one product for a longer period of time and improving it iteratively. Experience with Design Systems: creating components, documenting patterns or increasing adoption across teams. Experience validating designs using qualitative or quantitative methods. Experience designing products that involve AI, automation, recommendations, analytics, data visualization or complex workflows. Ability to run workshops, design reviews or discovery sessions. Experience working closely with developers and negotiating solution directions constructively. Experience using AI tools for research synthesis, ideation, copywriting, prototyping, competitive analysis, user-flow exploration or design critique. Good understanding of technical constraints and ability to discuss trade-offs with engineering teams. Strong organization skills and ability to prioritize work in a fast-moving environment. This role may be not for you if You prefer receiving very detailed briefs before starting design work. You are mainly interested in visual UI execution and do not enjoy product discovery or problem framing. You do not feel comfortable working with complex, technical or data-heavy products. You avoid discussions with engineers or product stakeholders. What can we provide for you? An opportunity to shape the reality by working in a fast-growing company, in the field of AI, BigData & Automation. Possibility to have real impact on promoting and raising awareness of Synerise solutions among potential customers, business partners and the industry community. Flat structure with ownership opportunities.

🏢 Summary: Senior Backend Node.js Developer role focused on building and scaling an event-driven microservices trading platform. The position involves end-to-end development within a distributed architecture, ensuring high performance, scalability, and code quality. Fully remote B2B contract with overlap with NYC hours. 🗂️ Requirements: 4+ years web application development experience, Expert knowledge of Node.js, Expert knowledge of TypeScript, Experience with distributed systems architecture, Experience with Apache Kafka, Experience with Redis, Experience with Kubernetes, Experience with MongoDB, Experience with automated unit testing and TDD, Strong understanding of performance optimization and computational complexity, Knowledge of algorithms and design patterns, Broad knowledge of web technologies 📃 Skills: Node.js, TypeScript, Kafka, Redis, Kubernetes, MongoDB, Microservices, TDD, Algorithms, DesignPatterns, Web 🏢 Description: We are looking for a performance-driven backend Senior Node.js Developer who can help us bring our client's trading solutions to the next level of functionality, scalability, and user experience. They are actively developing a new event-driven microservices architecture to form a foundational platform for delivering new trading applications. You will be responsible for delivering software end-to-end , from liaising with product managers and designers, to coordinating across international development teams on engineering and architecture to working with QA and DevOps teams - all ultimately to deliver a quality, innovative product to the traders and investors who depend on the platform every day. Requirements: Fluent English language [both written and spoken] Education: at least Bachelor's Degree, preferably in Computer Science 4+ years' professional web application development experience Expert-level Node.js and TypeScript knowledge, and curiosity to learn more Broad knowledge of web platform and technologies Superior analytical and problem-solving ability Effective communication skills to work with different teams across an international company Experience with modern distributed systems and infrastructure technologies, including Apache Kafka, Redis, Kubernetes, and MongoDB Automated unit testing and test-driven development Robust understanding of performance issues, computational complexity, and code optimization. Familiarity and implementation of industry-standard algorithms and design patterns Proactive and team player who can deliver in a high-pressure demanding environment Nest.js – nice to have Offer details: 100% remote job preferrably at least 4-5 hours overlap with NYC working hours B2B contract rate up to 55 USD/h net