Senior Software Engineer (TypeScript) Job at HR Contact (Kraków)

Senior Software Engineer

As a Senior Software Engineer working in the Data Fabric Group, your mission wil...

Location

United States , McLean

Salary:

Not provided

Appian Corporation

Expiration Date

Until further notice

Requirements

MS in Computer Science or related field/degree and 1+ years of relevant experience, or a BS and 3+ years of relevant experience
Experience in a high-volume or critical production service environment
Fluency in Java or C#
B.S. in Computer Science or related field/degree
Knowledge of data structures, algorithms, and design patterns
Experience writing software in a full-stack Java & web technology environment (Gradle, JDBC, Hibernate, Spring, Kafka, Quartz, Typescript, Redux, React)
Experience with both object-oriented and functional programming
Experience with software performance analysis and system tuning
Experience with code reviews
Experience building automation with tools such as JUnit, Spock, Jest, Jaeger, and/or Locust

Job Responsibility

Leverage knowledge of data structures, algorithms, and design patterns to write software in a full-stack Java & web technology environment
Utilize both object-oriented as well as functional programming approaches in different technologies to implement features effectively
Leverage relevant software development experience to radiate best practices and faster development
Manage availability, latency, scalability and efficiency of the product by designing reliability into software and systems
Troubleshoot, investigate and diagnose incidents using a combination of tracing, alerting and log analysis
Contribute to software performance analysis and system tuning
Be a strong contributor to team feature breakdowns/sizing and design of new feature implementations
Have a high degree of personal responsibility for the overall performance of the team, including capabilities, quality, stability and velocity
Perform code reviews which provide feedback not only on code quality, but on design and implementation
Build automation to prevent problem recurrence with tools such as JUnit, Spock, Jest, Jaeger, and/or Locust

What we offer

Training and Development during onboarding
Continuous learning with dedicated mentorship and First-Friend program
Growth opportunities including leadership program, Appian University, skills based training, and tuition reimbursement
Community immersion and inclusivity through 8 employee-led affinity groups

Fulltime

Senior Software Engineer

We’re seeking a Senior Software Engineer to join our Desktop team, working on a ...

Location

United States

Salary:

131000.00 - 194000.00 USD / Year

Anaconda

Expiration Date

February 17, 2026

Requirements

Ability to work East Coast hours
8+ of professional software development experience
Production experience in shipping Electron-based desktop applications for Windows, macOS, and Linux
Proficiency in React, TypeScript, and modern JavaScript
experience with CSS/SASS, component libraries (e.g., KendoReact)
Strong knowledge of Node.js, Express, and persistent storage tools (e.g., electron-store)
solid Python experience for service integration
Ability to identify issues proactively, analyze root causes, and collaborate effectively to implement solutions
Passion for creating user-friendly applications and a willingness to iterate based on user feedback
You embody our values of Clarity, Care and Candor

Job Responsibility

Design, develop, and ship features and improvements to our Electron-based desktop application, ensuring reliability and performance across Windows, macOS, and Linux
Lead technical decisions around React, TypeScript, and component architecture, setting patterns that scale as the team grows
Investigate and resolve complex issues proactively, analyzing root causes and collaborating with the team to implement solutions that improve stability and user experience
Integrate Python environment tools (Conda/Mamba) and services into the desktop application, bridging our Python ecosystem with modern web technologies
Partner with Product and UX to translate user feedback and requirements into technical solutions, shipping iteratively and learning from real-world usage
Mentor and collaborate with other engineers on the team, sharing expertise in desktop development and modern JavaScript tooling
Contribute to cross-functional initiatives with partner teams, strengthening integrations and expanding what's possible in the desktop and artifact ecosystem

What we offer

Flexible Vacation Policy
Medical, Dental, and Vision Insurance
Short Term and Long Term Disability
Paid Parental Leave
Monthly Wellness Stipend
Employee Assistance Program and Mental Health Resources

Fulltime

Senior Software Engineer

Altamira Technologies is seeking Senior Software Engineers to join our world-cla...

Location

United States , Denver

Salary:

90000.00 - 225000.00 USD / Year

Altamira Technologies

Expiration Date

Until further notice

Requirements

Relevant experience in, but not limited to, Java and/or C++ Development for a high-performance system
Experience developing complex software solutions in a Java environment
Typescript, Spring Boot, React or Vue
NoSQL databases
API design and development in Java, Go, or Rust (Java preferred)
Development of serverless and/or containerized software
Automated testing
CI/CD
Experience working in Agile development teams
Experience working in a software development environment that uses continuous integration methodology with automated test

Fulltime

Senior Software Engineer

Altamira Technologies is seeking Senior Software Engineers to join our world-cla...

Location

United States , Denver

Salary:

Not provided

Altamira Technologies

Expiration Date

Until further notice

Requirements

Relevant experience in, but not limited to, Java and/or C++ Development for a high-performance system
Experience developing complex software solutions in a Java environment
Typescript, Spring Boot, React or Vue
NoSQL databases
API design and development in Java, Go, or Rust (Java preferred)
Development of serverless and/or containerized software
Automated testing
CI/CD
Experience working in Agile development teams
Experience working in a software development environment that uses continuous integration methodology with automated test

Senior Software Engineer

We are looking for a Senior Software Engineer that has the ability to work full ...

Location

Sweden , Stockholm

Salary:

Not provided

Acast

Expiration Date

Until further notice

Requirements

You have experience with Node.js & Typescript
You have experience with React
You have experience with AWS or similar
You have experience building delightful end user facing applications
You have a pragmatic mindset and can make trade-offs on what to optimise for and when to ship
You are keen to mentor others in the technical aspects you are already an expert in
You value working in a diverse team with developers of all experience and backgrounds
You value other people’s input no matter their experience level

Job Responsibility

Take an important role in shipping new features while continuously increasing efficiency, stability and scalability of the systems
Interpret business and problem formulations together with your team, drive clarity, and turn that shared understanding into effective technical solutions
Ensure that Acast continues to follow cutting-edge frontend development practices, both in our codebase and in how we shape our processes
Work in a multi-disciplinary environment with agile principles
Support our own systems and infrastructure in production

Fulltime

Senior Software Engineer - Frontend

You’ll join the team primarily responsible for our overall front-end experience,...

Location

United States

Salary:

200000.00 - 225000.00 USD / Year

Tines

Expiration Date

Until further notice

Requirements

Capable with a high-level programming language
Comfortable building a small command-line program that makes decisions based on JSON input
Comfortable working across frontend, backend, and infrastructure (broad role, not specialized)
Must be authorized to work for any employer in the U.S. (for U.S. roles)

Job Responsibility

Work closely with colleagues to build solutions to customer problems
Write and review high quality, well tested code
Identify areas for improvement in codebase and workflows
Own problems and software solutions all the way to production
Shape and evolve our design system, building high-quality components
Mentor other engineers (at higher levels)
Help prioritise our roadmap (at higher levels)

What we offer

Competitive salary
Startup equity & extended exercise window
Matching retirement plans
Home office setup
Private healthcare plans
25 days annual leave
Extra company holidays
Generous parental leave programs
Flexibility in how and where you work
Phone and home Internet allowance

Fulltime

Senior Software Engineer - Fullstack

Sigma is transforming how businesses run by delivering a high performance platfo...

Location

United States , San Francisco

Salary:

150000.00 - 220000.00 USD / Year

Sigma Computing

Expiration Date

Until further notice

Requirements

5+ years industry experience building and maintaining high-quality software
Experience building and deploying robust and secure web applications in a continuous deployment environment
Desire to be a great teammate and have fun at work without compromising ownership towards your work
Strong sense of craftsmanship, and a healthy academic curiosity to solve challenges at sigma
Strong Computer Science fundamentals

Job Responsibility

Solve challenging problems that arise in providing high performance interactive experience to enable analytics and workflows use cases on top of modern warehouses
Build software using the latest developer tools and using programming languages like Rust, Go, GraphQL, Typescript
Develop new algorithms and techniques for improving the performance and interactivity for enabling analytics and workflows for the world largest companies
Triage product or system issues and debug/track/resolve by analyzing the sources of issues
Design and implement new software features to support our fast growing user growth
Collaborate with cross-functional groups - infrastructure, design, product, customer support, sales and marketing to build an innovative product capabilities

What we offer

Equity
Generous health benefits
Flexible time off policy
Paid bonding time for all new parents
Traditional and Roth 401k
Commuter and FSA benefits
Lunch Program
Dog friendly office

Fulltime

Senior Software Engineer

To achieve our visionary goals, we are scaling up our robust engineering team an...

Location

Bulgaria , Sofia

Salary:

Not provided

Payhawk

Expiration Date

Until further notice

Requirements

Advanced programming experience and superior knowledge of programming languages and technologies: Node.js, TypeScript, PostgreSQL, Kubernetes, Docker, Google Cloud, React, React Native, Apache Kafka
Bachelor's degree in Computer Science (or related field)
6+ years of relevant work experience
Experience with agile processes, continuous delivery, and continuous integration
Ability to multitask, organize, and prioritize work
Exceptional integrity and work ethic

Job Responsibility

Lead the build of new product features and maintain existing ones by driving impactful engineering initiatives and owning end-to-end delivery
Participate in the full software development lifecycle, including frontend, backend, testing, deployment, and LLM-based functionalities where applicable, while contributing to the architecture and proposing scalable, sustainable solutions
Collaborate with product managers and designers to capture requirements and gain a strong business perspective on the features being implemented
Break down complex, ambiguous problems into well-scoped and clearly defined tasks, ensuring alignment with product and technical goals
Write scalable, high-performance, and maintainable code, ensuring testability, coverage, continuous integration, and backward compatibility
Own feature delivery from discovery through deployment and monitoring, proactively addressing blockers and risks with minimal supervision
Mentor and support other engineers through knowledge sharing, constructive feedback, and code reviews
Collaborate across teams to remove dependencies, foster alignment, and ensure the team’s work fits into the broader technical direction

What we offer

Competitive compensation package based on experience
Stock options
30 days holiday paid leave
One week exchange policy to another Payhawk office (London, Berlin, Barcelona, Paris, Amsterdam and Vilnius)
Flexible working hours and opportunity to work from home
Regular team-wide events
Additional medical care
MultiSport card fully funded by us
Company office massages
Personal assistant service

Fulltime

Senior Software Engineer (TypeScript)

HR Contact

Location:
Poland , Kraków

Category:
IT - Software Development

Contract Type:
Not provided

Salary:

Job Description:

Job Responsibility:

Requirements:

Nice to have:

Additional Information:

Job Posted:
January 15, 2026

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Job Description:

Job Responsibility:

Requirements:

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Job Posted:January 15, 2026

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Job Posted:
January 15, 2026