Senior Full-stack Engineer Job at StartupSoft

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Senior Full-Stack Engineer

Our customer empowers organizations to conduct globally connected research and m...

Location

Ukraine; Poland

Salary:

Not provided

Edvantis

Expiration Date

Until further notice

Requirements

5+ years of experience developing, maintaining, and innovating large-scale web apps and services
Strong experience with Java, Spring, and Hibernate server applications, and their design patterns
Strong experience with unit testing and Test-Driven Development (TDD)
Strong understanding of software design and architecture
Experience with Agile Development, SCRUM
Experience with relational database technology
Experience with Spring Boot and Spring Webflux
Experience with the Atlassian Tool Suite (Bitbucket, Jira, and Confluence) or similar
Experience developing applications in AWS
Solid communication skills with demonstrated ability to explain complex technical issues to both technical and non-technical audiences

Job Responsibility

Design, code, test, and maintain full-stack software solutions of moderate to high complexity
Demonstrate engineering discipline in estimating work, reporting on progress, raising blockers, and delivering on time
Build features end-to-end — from data layer to UI — with a strong sense of ownership over quality and user experience
Contribute to the design and architecture of new and existing systems, ensuring alignment with the target architecture
Develop prototypes and proofs of concept to evaluate new technologies and approaches
Work cross-functionally with various teams: product management, quality engineering, and across various product lines to deliver
Balance feature delivery with proactive investment in tech debt, test coverage, and platform health
Participate in backlog refinement and sprint planning with an eye toward quality, feasibility, and long-term sustainability
Write thorough unit, integration, and end-to-end tests as a first-class part of development, driving towards a build quality in culture
Expand automated QA coverage as a core team metric

What we offer

Remote-first work model with flexible working hours (we provide all equipment)
Comfortable and fully equipped offices in Lviv and Rzeszów
Competitive compensation with regular performance reviews
18 paid vacation days per year + all state holidays
12 days of paid sick leave per year without a medical certificate + extra paid leave for blood donation
Health & wellness support: either a monthly budget for medical insurance and sports activities, or a full medical insurance plan, depending on your cooperation model
English, German, and Polish language courses
Corporate subscription to learning platforms, regular meetups and webinars
Friendly team that values accountability, innovation, teamwork, and customer satisfaction
Inclusive environment where everyone feels valued and treated equally. We proudly partner with VeteranHub to support Ukrainian veterans

Fulltime

Senior Full-Stack Engineer

We’re hiring a Full-Stack Engineer with a strong React focus for a 6-month fixed...

Location

Bordeaux

Salary:

Not provided

PhantomBuster

Expiration Date

Until further notice

Requirements

First successful experience leveraging AI into production
Already held a pure project ownership
5+ years of experience in product development, foreseeing the whole CI/CD pipeline, ideally on similar stacks
Comfortable with React and strict TypeScript
Don't block on a backend task

Job Responsibility

Ownership of features for PhantomBuster and our new AI product, handling projects hand in hand with your Product Manager and your Squad Lead
Maintain and develop high-quality front-end features and Design System
Improve and maintain the test suite (unit → E2E)
Participate in the support duty of the team (report and fix bugs)
Be a champion AI-assisted engineering: from code generation and testing to debugging

What we offer

€40/month for remote work
Home office budget up to €1500
100% of an Alan Blue subscription (french-based contracts)
Lunch vouchers - €8 (50% The Phantom Company) / worked day (french-based contracts)
Partnership with MokaCare
€70 a month benefit for entertainment expenses
Book Allowance and Sharing Program
Flexible working time
Fun team building events
International team

Fulltime

Senior Full-Stack Engineer

At SitePen, senior engineers are trusted to do meaningful work with other highly...

Location

United States

Salary:

Not provided

SitePen

Expiration Date

Until further notice

Requirements

Typically 15+ years of full-time software engineering experience, though exceptional candidates with fewer years are welcome.
Comfortable owning problems from browser to database to cloud infrastructure.
Able to communicate effectively with engineers, product teams, and executives.
Cares about outcomes, reliability, maintainability, and leaving systems better than they were found.
Knows when to move quickly, when to be deliberate, and when to challenge assumptions constructively.
This role assumes strong experience with AI-assisted software development and the ability to use modern tooling effectively across day-to-day engineering work, including: Solution design and technical exploration
Coding and implementation speed
Refactoring legacy systems
Debugging and root-cause analysis
Test generation and automation

Job Responsibility

Build and deliver production software across the stack
Architect practical solutions grounded in business needs
Work directly with customers, product leaders, and engineering teams
Improve systems that are slow, fragile, outdated, or difficult to scale
Raise standards through example and collaboration
Make strong technical decisions and clearly explain tradeoffs
Support other engineers through reviews, mentoring, and leadership

What we offer

Competitive compensation based on experience and impact
benefits that support a sustainable career and life outside work
Trust and autonomy
Talented peers
Practical processes
Respect for life outside work
Interesting technical challenges
Long-term thinking over short-term chaos

Fulltime

Senior Full-Stack Engineer

Senior Full-Stack Engineer – New York – On-Site – Opportunity to join one of the...

Location

United States , New York

Salary:

Not provided

Orbis Consultants

Expiration Date

Until further notice

Requirements

Several years of professional software development experience
Strong proficiency in React, TypeScript, and modern JavaScript
Hands-on experience with Node.js backend development using frameworks like NestJS, Express, or Hono
Experience with Next.js and/or React Native for building production applications
Solid understanding of relational databases (PostgreSQL preferred), including data modeling and query optimization
Familiarity with state management patterns and libraries (Redux or similar)
Experience working with design systems and component libraries
Understanding of observability fundamentals: logging, tracing, metrics, and alerting
Experience designing systems that scale—caching strategies, async processing, API design
Proficiency with Git and modern CI/CD workflows

Job Responsibility

Work across the full lifecycle of projects – from scoping and technical roadmapping to production and deployment
Have your say in technical conversations, code reviews, and architectural decision-making
Adapt to the demands of various projects and issues by working across the stack as needed
Use Node.js frameworks (NestJS, Hono, Express) to create and manage backend services
Use Next.js, React, and React Native to create efficient front-end experiences
Work together with design teams to utilise our design system on mobile and web platforms
Create schemas, optimise queries, and guarantee data integrity using relational databases (PostgreSQL)
Put into effect and uphold observability techniques, such as distributed tracing, structured logging, and monitoring

Fulltime

Senior Full-Stack Engineer

N-iX is looking for Senior Full-Stack Engineer (Spanish-speaking) to join the te...

Location

Salary:

Not provided

N-iX

Expiration Date

Until further notice

Requirements

5+ years of software development experience
4+ years of strong Java development experience with Maven
2–3 years of experience with Spring framework and building Spring-based web applications
Solid understanding of microservices architecture and RESTful APIs (OpenAPI)
Experience with modern frontend technologies including React, Redux, Redux-Saga, TypeScript, ES6
Experience with HTML5, CSS3/SCSS, responsive design techniques, and frontend performance optimization
Strong knowledge of OOP, OOD, DDD, and design patterns
Experience with relational databases and NoSQL solutions (e.g., MongoDB)
Experience working with cloud platforms such as AWS or Azure
Experience working in Agile environments and understanding Agile development practices

Job Responsibility

Participate actively and constantly in the design and development of APIs
Ensure the availability and resilience of its services that help the development of the company’s business
Ensure the quality of development and code cleanliness (Clean Code)
Continuously perfect our style guides, design, and code patterns as well as our React component library
Implement the scripts for the automation of the test cases
Automatic and manual exploratory execution during the development to verify that the acceptance criteria are covered
Maintain and evolve automated test cases with QA
Work in close contact with the Product Owner and support in the technical definition of product backlog items
Guarantee continuous deployment, write qualitative, maintainable code with extensive test coverage in a fast-paced professional software engineering environment
Suggest technical and functional improvements to add value to the product

What we offer

Flexible working format - remote, office-based or flexible
A competitive salary and good compensation package
Personalized career growth
Professional development tools (mentorship program, tech talks and trainings, centers of excellence, and more)
Active tech communities with regular knowledge sharing
Education reimbursement
Memorable anniversary presents
Corporate events and team buildings
Other location-specific benefits

Fulltime

Senior Full-Stack Engineer

We are seeking an experienced Senior Full-Stack Engineer to join our growing Eng...

Location

Canada , Toronto

Salary:

90000.00 - 120000.00 USD / Year

Thrive Career Wellness Inc

Expiration Date

Until further notice

Requirements

5+ years of experience as a professional software developer shipping production-level code
Proficiency building single-page applications using JavaScript frameworks such as Ember or React
Proficiency building scalable distributed backend services using Ruby on Rails and PostgreSQL
Strong experience with modern testing frameworks (RSpec, Cypress, Jest, QUnit, or equivalents)
Proven ability to build and maintain fully automated CI/CD pipelines
Proficiency working in cloud environments, ideally AWS

Job Responsibility

Act as a key member of the Engineering team, responsible for shipping end-to-end features frequently and with confidence
Work collaboratively with product managers and designers, guiding decisions based on deep knowledge of codebase structure and technical feasibility
Participate in code reviews, providing constructive feedback and maintaining high code quality across the team
Mentor and be mentored by engineers at various levels, fostering a culture of continuous learning and technical growth
Actively engage in team rituals such as retrospectives, contributing to ongoing improvements in technology, processes, and team culture
Give and receive feedback in support of a safe, collaborative, and growth-oriented engineering environment

What we offer

3 weeks paid vacation + 1 week holiday shutdown
Health Insurance & Wellness Coverage
Yearly Learning & Development Allowance
Yearly Workspace Allowance
Access to licensed learning platforms
Fully remote work environment with optional access to downtown Toronto office space
High-trust environment with autonomy, ownership, and flexibility
Fast-paced startup culture with strong mentorship and growth opportunities

Fulltime

Senior Full-Stack Engineer

The is a research-driven SaaS platform that helps software engineering organizat...

Location

Moldova , Chisinau

Salary:

Not provided

Yopeso

Expiration Date

Until further notice

Requirements

Senior engineer (5+ years)
Can move comfortably between frontend and backend
Enjoys solving ambiguous problems
Thinks outside the box
Thrives in small, high-ownership teams
Stack: React, PHP (OOP), Python, Rust, Docker, AWS

Job Responsibility

Own features end-to-end
Help shape architecture
Participate in product brainstorming
Improve performance and scalability
Contribute to DevOps and infrastructure

What we offer

Competitive remuneration
Remote work
28 calendar days of vacation

Senior Full-Stack Engineer

We are seeking an experienced Senior Full-Stack Engineer to join our growing Eng...

Location

Canada , Toronto

Salary:

90000.00 - 120000.00 CAD / Year

Thrive Career Wellness Inc

Expiration Date

Until further notice

Requirements

5+ years of experience as a professional software developer shipping production-level code
Proficiency building single-page applications using JavaScript frameworks such as Ember or React
Proficiency building scalable distributed backend services using Ruby on Rails and PostgreSQL
Strong experience with modern testing frameworks (RSpec, Cypress, Jest, QUnit, or equivalents)
Proven ability to build and maintain fully automated CI/CD pipelines
Proficiency working in cloud environments, ideally AWS

Job Responsibility

Act as a key member of the Engineering team, responsible for shipping end-to-end features frequently and with confidence
Work collaboratively with product managers and designers, guiding decisions based on deep knowledge of codebase structure and technical feasibility
Participate in code reviews, providing constructive feedback and maintaining high code quality across the team
Mentor and be mentored by engineers at various levels
Actively engage in team rituals such as retrospectives
Give and receive feedback in support of a safe, collaborative, and growth-oriented engineering environment

What we offer

3 weeks paid vacation + 1 week holiday shutdown
Health Insurance & Wellness Coverage
Yearly Learning & Development Allowance
Yearly Workspace Allowance
Access to licensed learning platforms

Fulltime

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