Senior Software Engineer - Fullstack Jobs

New

Senior Software Engineer - FullStack .NET Core

Elevate your expertise to new heights at 3Pillar, the premier destination for tr...

Location

Salary:

Not provided

3Pillar Global

Expiration Date

Until further notice

Requirements

C#, .NET Core, MVC
Strong SQL Server background
Complex procedures debugging and bug fixing
Proficient English skills
Stakeholder management abilities
Excellent problem-solving skills and a proactive attitude towards challenges
Strong verbal and written communication skills

Job Responsibility

Facilitate effective communication with client project stakeholders regarding project status and recommendations
Craft client code that is efficient, performant, testable, scalable, secure, and of the highest quality
Actively participate in accurate planning and estimation efforts, utilizing project methods and tools
Proficiently gather requirements and organize/present developed features for clients
Execute complex activities within the current methodology and quality standards, showcasing success across diverse engagements
Promote client success across the team by collaborating with engineers, designers, and managers to understand user pain points, anticipate potential problems, and iterate on solutions that drive client success
Engage in agile software development, including daily stand-ups, sprint planning, team retrospectives, and other governance activities
Actively participate in the Engineering Practice community, mentoring others through Communities of Practice (CoPs) or on project teams, and supporting the growth of technical capabilities
Independently drive project delivery within defined architecture, demonstrating autonomy and accountability in all stages from conceptualization to deployment

What we offer

Flexible work environment (office, home, or blend)
Remote-first approach
Global team
Well-being focus (fitness offerings, mental health plans, generous time off)
Accelerated career growth and development opportunities across projects, offerings, and industries

Fulltime

New

Senior Software Engineer - FullStack .NET Core

Elevate your expertise to new heights at 3Pillar, the premier destination for tr...

Location

Romania

Salary:

Not provided

3Pillar Global

Expiration Date

Until further notice

Requirements

C#, .NET Core, MVC
Strong SQL Server background
Complex procedures debugging and bug fixing
Proficient English skills
Stakeholder management abilities
Excellent problem-solving skills and a proactive attitude towards challenges
Strong verbal and written communication skills

Job Responsibility

Facilitate effective communication with client project stakeholders regarding project status and recommendations
Craft client code that is not just efficient, but also performant, testable, scalable, secure, and of the highest quality
Actively participate in accurate planning and estimation efforts, utilizing project methods and tools
Proficiently gather requirements and organize/present developed features for clients
Execute complex activities within the current methodology and quality standards, showcasing success across diverse engagements
Promote client success across the team by collaborating with engineers, designers, and managers to understand user pain points, anticipate potential problems, and iterate on solutions that drive client success
Engage in agile software development, including daily stand-ups, sprint planning, team retrospectives, and other governance activities
Actively participate in the Engineering Practice community, mentoring others through Communities of Practice (CoPs) or on project teams, and supporting the growth of technical capabilities
Independently drive project delivery within defined architecture, demonstrating autonomy and accountability in all stages from conceptualization to deployment

What we offer

Flexible work environment (office, home, or blend)
Remote-first approach
Part of a global team, learning from top talent
Well-being focus (fitness offerings, mental health plans, generous time off)
Accelerated career growth and development opportunities across projects, offerings, and industries

Fulltime

New

Senior Software Engineer - FullStack .NET Core

Elevate your expertise to new heights at 3Pillar, the premier destination for tr...

Location

Czech Republic

Salary:

Not provided

3Pillar Global

Expiration Date

Until further notice

Requirements

C#, .NET Core, MVC
Strong SQL Server background
Complex procedures debugging and bug fixing
Proficient English skills
Stakeholder management abilities
Excellent problem-solving skills and a proactive attitude towards challenges
Strong verbal and written communication skills

Job Responsibility

Facilitate effective communication with client project stakeholders regarding project status and recommendations
Craft client code that is not just efficient, but also performant, testable, scalable, secure, and of the highest quality
Actively participate in accurate planning and estimation efforts, utilizing project methods and tools
Proficiently gather requirements and organize/present developed features for clients
Execute complex activities within the current methodology and quality standards, showcasing success across diverse engagements
Promote client success across the team by collaborating with engineers, designers, and managers to understand user pain points, anticipate potential problems, and iterate on solutions that drive client success
Engage in agile software development, including daily stand-ups, sprint planning, team retrospectives, and other governance activities
Actively participate in the Engineering Practice community, mentoring others through Communities of Practice (CoPs) or on project teams, and supporting the growth of technical capabilities
Independently drive project delivery within defined architecture, demonstrating autonomy and accountability in all stages from conceptualization to deployment

What we offer

Flexible work environment
Remote-first approach
Global team
Well-being focus
Fitness offerings
Mental health plans (country-dependent)
Generous time off
Accelerated career growth and development opportunities

Fulltime

New

Senior Software Engineer, Fullstack

At Webflow, we’re building the world’s leading AI-native Digital Experience Plat...

Location

Argentina

Salary:

Not provided

Webflow

Expiration Date

Until further notice

Requirements

Business-level fluency to read, write and speak in English
5+ years developing and deploying web applications, with a proven track record of shipping code
Familiar with Node.js and TypeScript and can write scalable services and APIs using Express.js, GraphQL, Apollo, and MongoDB
Can debug production issues across services and multiple levels of the stack
Have proven experience building complex web systems
Have used testing frameworks (e.g. Jest, Mocha, Playwright, Cypress)
Comfortable working in an agile, safe-to-fail, environment
Stay curious and open to growth — actively building fluency in emerging technologies like AI

Job Responsibility

Design, and implement scalable multi-tenant backend services and APIs
Work with technologies such as Node.js, Javascript/Typescript, MongoDB, GraphQL, Apollo, Amazon Web Services EC2, S3, Lambdas, Kafka, and more
Contribute to building and executing on functional strategy
Lead projects that directly contribute to team and engineering organization's deliverables
Produce maintainable, tested, performant, and scalable code
Author, collaborate on, and evaluate design documents
Influence technical designs and team-level prioritization as well as participate in technical solutions
Collaborate with product managers and designers in an autonomous, supportive team environment
Mentor junior engineers in technical skills and Webflow culture
Participate in engineering citizenship activities such as co-authoring engineering blogs, strengthening and improving our hiring processes, and leading internal hackathon teams

What we offer

Ownership in what you help build. Every permanent Webflower receives equity (RSUs) in our growing, privately held company
Health coverage that actually covers you. Comprehensive medical, dental, and vision plans for full-time employees and their dependents, with Webflow covering most premiums
Support for every stage of family life. 12 weeks of paid parental leave for all parents and 6+ weeks of additional paid leave for birthing parents. Plus inclusive care for family planning, menopause, and midlife transitions
Time off that’s actually off. Flexible vacation, paid holidays, and a sabbatical program to help you recharge and come back inspired
Wellness for the whole you. Access to mental health resources, therapy and coaching
Invest in your future. A 401(k) with 100% employer match (up to $6,000/year) in the U.S., and support for retirement savings globally
Monthly stipends that flex with your life. Localized support for work and wellness expenses — from Wi-Fi to workouts
Bonus for building together. All full-time, permanent, non-commission employees are eligible for our annual WIN bonus program

Fulltime

New

Senior Software Engineer - Fullstack

We are growing the engineering team and looking for engineers who have the chops...

Location

United States , New York City

Salary:

180000.00 - 220000.00 USD / Year

Sigma Computing

Expiration Date

Until further notice

Requirements

Strong Computer Science fundamentals
5+ years industry experience building and maintaining high-quality software
Experience building and deploying robust and secure web APIs
Desire to be a great teammate and have fun at work
Strong sense of craftsmanship, and a healthy academic curiosity

Job Responsibility

Solve challenging problems that arise in providing an interactive experience on data warehouses for data exploration and analysis
Build with modern tools and languages like Rust, Go, GraphQL, and Kubernetes
Build infrastructure to support a modern cloud application
Develop new algorithms and techniques for improving the performance and interactivity of our multi-tenant cloud application
Design and implement new technologies and features to support our fast growing user base
Collaborate with cross-functional groups - backend, frontend, design, product, customer support, sales and marketing to build an innovative product

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

New

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

New

Senior Software Engineer - Fullstack

We build simple yet innovative consumer products and developer APIs that shape h...

Location

United States , New York

Salary:

180000.00 - 270000.00 USD / Year

Plaid

Expiration Date

Until further notice

Requirements

5+ years of experience with extensive experience in software engineering with a proven track record of shipping successful projects
Experience with MySQL or other relational databases
Experience working with microservices
Working knowledge of HTML, CSS, Javascript and modern frameworks and libraries
Excellent coding, testing skills, and system design skills
Proven experience with cross-functional collaboration, communication and project management skills
Demonstrated leadership skills and the ability to mentor and guide junior engineers
Experience partnering with operations, product, design, and data science

Job Responsibility

Design & Development: Design, develop and maintain both frontend and backend components
Majority Backend Focus (60-70%): Develop APIs and services, focusing on scalability, security and performance
Frontend Focus (30-40%): Build delightful experiences using modern JavaScript frameworks and libraries
Collaboration: Work closely with product managers, product designers and other stakeholders to define and implement new features that meet product and customer needs
Code Quality: Write clean, maintainable and efficient code
Testing & Debugging: Develop automated tests to ensure the quality and reliability of the codebase. Troubleshoot and resolve issues
Engage in hands-on coding and architectural design, setting and maintaining high technical standards for a high performing team
Grow the team via mentorship and leadership, reviewing technical documents and code changes

What we offer

medical
dental
vision
401(k)

Fulltime

New

Senior Software Engineer - Fullstack

We build simple yet innovative consumer products and developer APIs that shape h...

Location

United States , San Francisco

Salary:

180000.00 - 270000.00 USD / Year

Plaid

Expiration Date

Until further notice

Requirements

5+ years of experience with extensive experience in software engineering with a proven track record of shipping successful projects
Experience with MySQL or other relational databases
Experience working with microservices
Working knowledge of HTML, CSS, Javascript and modern frameworks and libraries
Excellent coding, testing skills, and system design skills
Proven experience with cross-functional collaboration, communication and project management skills
Demonstrated leadership skills and the ability to mentor and guide junior engineers
Experience partnering with operations, product, design, and data science

Job Responsibility

Design & Development: Design, develop and maintain both frontend and backend components
Majority Backend Focus (60-70%): Develop APIs and services, focusing on scalability, security and performance
Frontend Focus (30-40%): Build delightful experiences using modern JavaScript frameworks and libraries
Collaboration: Work closely with product managers, product designers and other stakeholders to define and implement new features that meet product and customer needs
Code Quality: Write clean, maintainable and efficient code
Testing & Debugging: Develop automated tests to ensure the quality and reliability of the codebase. Troubleshoot and resolve issues
Engage in hands-on coding and architectural design, setting and maintaining high technical standards for a high performing team
Grow the team via mentorship and leadership, reviewing technical documents and code changes

What we offer

medical
dental
vision
401(k)

Fulltime

Senior Software Engineer - Fullstack

Rockbot

Location:
United States

Category:
IT - Software Development

Contract Type:
Not provided

Salary:

Job Description:

Job Responsibility:

Requirements:

Additional Information:

Job Posted:
December 11, 2025

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Senior Software Engineer - Fullstack

Rockbot

Location:United States

Category:IT - Software Development

Contract Type:Not provided

Salary:

Job Description:

Job Responsibility:

Requirements:

Additional Information:

Job Posted:December 11, 2025

Looking for more opportunities? Search for other job offers that match your skills and interests.

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Location:
United States

Category:
IT - Software Development

Contract Type:
Not provided

Job Posted:
December 11, 2025