Source Job

Hungary

  • Develop and implement new features using Python/Node.js, JavaScript/TypeScript, and PostgreSQL in a microservice architecture.
  • Write unit tests with Jest, review merge requests, and perform incident analysis and troubleshooting.
  • Collaborate with stakeholders including development teams, product owners, and architects to ensure smooth operation and development.

JavaScript TypeScript Node.js SQL PostgreSQL

20 jobs similar to Senior Developer - Backend

Jobs ranked by similarity.

Global

  • Develop new features and components, refactoring, debugging, and maintaining software.
  • Perform peer code reviews and unit/integration testing.
  • Participate in SAFe Agile ceremonies, architecture discussions, and technical documentation.

Sigma Software helps pharmaceutical companies and researchers accelerate medicine development through modern computational modeling solutions. The company operates as part of an international distributed team that values collaboration, quality, and engineering standards.

Europe Unlimited PTO

  • Design and maintain server-side applications and database architecture using Node.js, Express, and MongoDB.
  • Collaborate with front-end developers to ensure seamless user experience and regularly review code for efficiency.
  • Develop and deploy reusable, testable code and automated tests in a collaborative, agile environment.

Appinio is a global market research company that combines an AI-powered insights platform with expert consultancy to help companies understand consumer behavior and make data-driven decisions. We have over 260 employees across 13 countries, operate remote-first, and serve 2600+ international clients globally.

Europe

  • Develop and maintain robust software applications using TypeScript/JavaScript, Node.js, Nest.js, and React.
  • Implement new functionality from scratch, such as role-based access control services and API integrations, under the guidance of Senior Developers.
  • Work in an AI-augmented development environment, leveraging tools like Claude Code, Cursor, and Microsoft Copilot.

Sigma Software is a global technology company delivering impactful solutions with modern technologies. They foster a supportive environment that values curiosity, collaboration, and continuous learning.

Europe

  • Develop and maintain modern full stack web applications with a strong focus on back-end architecture and scalability.
  • Design and implement AI-powered features and intelligent workflows, building reliable and secure cloud-native services.
  • Collaborate with cross-functional teams, contribute to architecture discussions, and promote engineering excellence and AI adoption.

Sigma Software develops scalable products for healthcare and life sciences, focusing on scientific computing, AI-powered workflows, and cloud-native engineering. The company values engineering excellence, collaboration, and continuous learning, providing a supportive professional environment.

$180,000–$230,000/yr
Global Unlimited PTO 12w maternity 12w paternity

  • Own and lead key components of Core Discovery services, focusing on Maps and Location surfaces and Directory search.
  • Collaborate with cross-functional teams including UX designers and data scientists to ensure comprehensive solutions.
  • Continuously learn and adopt new technologies to maintain scalable, innovative solutions.

Raya is a membership-based social network that enriches lives by fostering relationships through quality, in-person interactions. They prioritize learning and teamwork, offering a great culture and growth opportunities.

Canada

  • Design, develop, and maintain web applications using Django and FastAPI
  • Build and integrate RESTful APIs and implement scalable ETL data transformation workflows
  • Write efficient SQL, manage PostgreSQL schemas, and ensure code quality through testing and reviews

Fleetworthy offers the only complete technology suite for fleet readiness, uniting safety and compliance, toll management, and weigh station bypass solutions. Trusted by 75% of the top fleets in North America, Fleetworthy supports millions of vehicles and drivers.

US

  • Build and maintain backend services and APIs using Node.js, TypeScript, and PostgreSQL.
  • Collaborate with product managers, designers, and engineers to deliver end-to-end solutions.
  • Investigate and resolve production issues with a focus on root-cause analysis and long-term maintainability.

PAR Technology Corporation has been a leader in restaurant technology for over 40 years, providing software and hardware solutions to over 100,000 restaurants in more than 110 countries. The company embraces a 'Better Together' ethos, fostering a collaborative culture focused on innovation and customer success.

US

  • Write and maintain scalable enterprise quality software using JavaScript/Node.js/TypeScript and React/Angular.
  • Set up and maintain cloud infrastructure on AWS (Lambdas, Code Build, Cognito, API Gateway) for microservices.
  • Drive feature engineering and experimentation to improve algorithm performance while negotiating solutions with stakeholders.

Railroad19 builds custom software solutions and provides top-tier development services. As a specialized team of developers and architects, they foster a culture of hard work and thought leadership, with a distributed team across the US.

Global

  • Participate in brainstorming sessions about software development and architecture.
  • Develop, deploy and test Node.js based micro-services based on a set of requirements.
  • Participate in code review of other fellow developers and provide support.

tawk.to is the world’s #1 business messaging application, building systems at scale like search, concurrency, and real-time metrics. We are a small, globally distributed team with a friendly culture and career growth opportunities.

EU

  • Build and optimize Node.js/TypeScript microservices for scalable AdTech and Retail Media solutions.
  • Develop and maintain React applications with Next.js and Material-UI, implementing advanced form logic.
  • Integrate high-throughput data systems like MongoDB, Redis, and Algolia, and handle distributed messaging.

Redcare Pharmacy is Europe's No.1 e-pharmacy, providing online pharmacy services with a focus on innovation and health. They foster a collaborative, purpose-driven work environment where every employee feels valued.

Hungary

  • Develop software solutions and ensure operational stability within an agile project setup.
  • Coordinate with business units, analyze requirement documents, and resolve production issues.
  • Contribute to the implementation of new business and IT initiatives with modern technologies.

Deutsche Telekom IT Solutions is a subsidiary of Deutsche Telekom Group, providing IT and telecommunications services. They are the largest ICT employer in Hungary with over 5000 employees and have been recognized as one of the most attractive workplaces.

$91,000–$120,000/yr
United States Unlimited PTO

  • Craft client code that is efficient, performant, testable, scalable, secure, and of the highest quality.
  • Provide accurate status tracking, reporting, and estimation using project methods and tools.
  • Collaborate with fellow engineers, designers, and managers to understand user pain points and iterate on solutions.

3Pillar is an AI transformation partner that helps enterprises build AI-native products and intelligent agents. With teams across North America, Europe, Latin America, and Asia, the company fosters a remote-first culture focused on well-being, global collaboration, and career growth.

$140,000–$220,000/yr
US

  • Develop frontend and backend features for Akash Console
  • Build and maintain public APIs and SDKs for partners
  • Work on automated tests and CI/CD automation

Akash Network is developing the world’s first decentralized cloud computing marketplace, enabling any data center to become a cloud provider by offering unused compute cycles. They are a remote-first, distributed team of open source and blockchain developers from leading technology companies.

Global

  • Build and maintain features across React/TypeScript frontend and NestJS/TypeScript backend, including UI, REST APIs, and data layers.
  • Design client-server architecture with state management, routing, authentication, real-time WebSocket updates, and AWS SQS background job processing.
  • Collaborate on integration between web app and LLM-based agents for message schemas, queue communication, and file/data handoff.

InsightRX builds a platform combining web applications with conversational AI to support pharmacokinetic/pharmacodynamic analysis and clinical trial workflows. Their team focuses on pharmaceutical R&D decision-making tools, though no specific size or culture data is provided.

$92,000–$113,500/yr
United States

  • Collaborate with senior developers to implement new features and improve existing functionality.
  • Write and test high-quality code based on design specifications and product requirements.
  • Participate in planning and design discussions with product managers and designers.

Judi Health is an enterprise health technology company providing pharmacy benefit management and health benefit solutions for employers and health plans. It is a late-stage startup with a remote-first culture and a focus on delivery.

Latin America

  • Act as the primary technical point of contact for healthcare 'vibe coders', diagnosing and resolving complex platform issues.
  • Design, build, and maintain full-stack features and internal tooling.
  • Write optimized SQL queries and develop secure, type-safe REST APIs.

We build a platform to easily build and launch secure healthcare applications. We are a small, remote team with a focus on developer experience.

India Brazil

  • Design system architecture and build efficient, reusable code for scalable backend methods from idea to going live.
  • Integrate user-facing elements with server-side logic and data storage solutions.
  • Identify bottlenecks and bugs, and lead continuous improvement of development processes such as coding standards and code reviews.

vVents delivers live virtual video events for every occasion from birthdays to political campaigns. The company offers a platform combining video conference, chat, gaming, and gifting functions.

Switzerland

  • Design, develop, and maintain scalable backend services, microservices, and RESTful APIs.
  • Deliver features from initial design through deployment, including testing, code reviews, and production releases.
  • Mentor junior engineers and contribute to architectural decisions.

Partner company develops modern software products with a focus on building scalable, high-performance backend solutions. Its fully remote engineering team values ownership, technical excellence, and continuous improvement.

$86,400–$129,600/yr
Europe

  • Own features from discovery through implementation and continuous improvement.
  • Build scalable applications using TypeScript, React, Node.js, and NestJS.
  • Work directly with customers to understand challenges and validate solutions.

They develop AI-powered communication solutions that help businesses automate customer interactions. The company is one of Europe's fastest-growing AI companies, with a culture focused on ownership, deep work, and customer impact.

Spain 5w PTO

  • Design and evolve Advanced Tables for Confluence using TypeScript, React, and Atlassian Forge.
  • Build integrations with Jira and other cloud data sources via REST APIs and various data formats.
  • Take ownership throughout the product lifecycle, from design to testing and resolving escalated customer issues.

Appfire creates software that empowers teams to collaborate seamlessly across silos. With over 800 employees working remotely across 28 countries, the company fosters a culture of flexibility and ownership.