CrawlJobs Logo

Senior Full-Stack Engineer

ventionteams.com Logo

Vention

Location Icon

Location:
Poland , Krakow

Category Icon
Category:
IT - Software Development

Job Type Icon

Contract Type:
Not provided

Salary Icon

Salary:

10000.00 PLN / Month
Save Job
Save Icon
Apply Position

Job Description:

Vention is a global engineering partner to tech leaders and fast-growing startups, combining 20+ years of product development expertise with an AI-first approach and a reputation for reliable delivery. With around 500 engineers skilled in Node.js, we build scalable and efficient backend solutions across a variety of industries. Our teams work with popular frameworks including Express.js, Koa.js, NestJS, Sails, LoopBack, and Meteor, and we actively leverage cloud technologies to deliver high-performance applications.

Job Responsibility:

  • Lead technical analysis of requirements and architect scalable solutions
  • Drive feature development while optimizing existing codebase
  • Champion code quality through comprehensive testing and reviews
  • Interface with international clients on technical solutions
  • Optional: Conduct interviews and mentor junior engineers

Requirements:

  • 4+ years of commercial experience in web development as a Full-Stack Engineer
  • Strong hands-on experience with Node.js and TypeScript on the backend
  • Strong experience with React and TypeScript, including development of Single Page Applications
  • Practical experience working with microservice architectures and relational databases
  • Understanding of different testing approaches with the ability to write clear, maintainable, and effective tests
  • Experience with AWS services
  • English level B2 or higher, comfortable communicating in an international environment

Nice to have:

  • Knowledge of Angular would be a strong advantage
  • Knowledge of Elasticsearch and GraphQL would be an advantage
What we offer:
  • EDU corporate community (300+ members): tech communities, interest clubs, events, a small R&D lab, a knowledge base, and a dedicated AI track
  • Licenses for AI tools: GitHub Copilot, Cursor, and others
  • Private medical care with LuxMed
  • Kafeteria MyBenefit credits for stores, restaurants, and cafés
  • Access to a Multisport membership to stay active
  • Glasses reimbursement program
  • Referral bonuses for bringing in new talent

Additional Information:

Job Posted:
January 29, 2026

Employment Type:
Fulltime
Work Type:
Hybrid work
Icon
Vention - All Job Offers
Job Link Share:
Copy Link Icon
Facebook Icon Twitter Icon LinkedIn Icon

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

Briefcase Icon

Similar Jobs for Senior Full-Stack Engineer

Senior Full Stack Software Engineer

As a Senior Full Stack Software Engineer, you will be responsible for architecti...
Location
Location
United States , San Francisco
Salary
Salary:
146300.00 - 235000.00 USD / Year
https://www.atlassian.com Logo
Atlassian
Expiration Date
Until further notice
Flip Icon
Requirements
Requirements
  • Business Applications Experience with Oracle Fusion Cloud, Zuora Revenue, Coupa, Anaplan, Avalara, and prior QTC architecture experience
  • Strong proficiency in modern programming languages (e.g., Java, Python) and frameworks (e.g., React, Node.js)
  • Exposure to integration platforms such as Workato and RPA platforms such as UIPath
  • Experience with AI technologies and machine learning frameworks, with a focus on integrating these into business applications
  • Familiarity with cloud environments such as AWS or GCP, and experience with deploying and managing applications in the cloud
  • Ability to tackle complex technical challenges and provide innovative solutions
  • Excellent communication skills to collaborate effectively with cross-functional and leadership teams both across Engineering and Finance organizations
  • Bachelor's or Master's degree in Computer Science, Information Technology, or a related field
Job Responsibility
Job Responsibility
  • Design and implement scalable and robust full-stack solutions that integrate with finance systems or business applications
  • Collaborate with data scientists and machine learning engineers to incorporate AI features into products, enhancing functionality and user experience
  • Lead technical design and architecture discussions, ensuring best practices are followed in software development and AI integration
  • Work closely with technical product managers (TPM), designers, and other engineers and business teams to deliver high-quality products that meet business needs
  • Drive innovation by exploring new technologies and methodologies to improve product offerings and development processes
What we offer
What we offer
  • health coverage, paid volunteer days, wellness resources
  • Fulltime
Read More
Arrow Right

Senior Full-Stack Software Engineer

The Codified Controls team is revolutionizing how policies, standards, and contr...
Location
Location
United Kingdom , London
Salary
Salary:
Not provided
https://www.citi.com/ Logo
Citi
Expiration Date
Until further notice
Flip Icon
Requirements
Requirements
  • Proven experience as a Full Stack Software Engineer in product teams
  • Strong Experience delivering Go, Python and React code to production
  • Experience working in an agile software development environment
  • Proven experience with distributed systems, event-driven architectures, container-based micro-services, distributed logs, SQL and NoSQL databases, and DevSecOps
Job Responsibility
Job Responsibility
  • Design, develop, and test software applications
  • Work closely with other team members to ensure that the software is developed and delivered on time and within budget
  • Set the standards for high quality software and great user experiences
  • Stay up to date on the latest software development trends and technologies
  • Ensure software platforms are compliant with Citi's security and Software Development Life Cycle processes
  • Work across teams to drive codified controls and an everything-as-code mindset
  • Support cultural change, instigating critical thinking about controls and processes and encouraging a culture of continuous improvement
What we offer
What we offer
  • 27 days annual leave (plus bank holidays)
  • A discretional annual performance-related bonus
  • Private Medical Care & Life Insurance
  • Employee Assistance Program
  • Pension Plan
  • Paid Parental Leave
  • Special discounts for employees, family, and friends
  • Hybrid working model (up to 2 days at home per week)
  • Fulltime
Read More
Arrow Right

Senior Growth Full-Stack Engineer

Senior Growth Full-Stack Engineer role at Seamless.AI focusing on user activatio...
Location
Location
United States
Salary
Salary:
Not provided
https://seamless.ai/ Logo
Seamless.AI
Expiration Date
Until further notice
Flip Icon
Requirements
Requirements
  • 5+ years of experience as a full-stack engineer (startup or growth-focused environment preferred) with SaaS product
  • Strong proficiency in modern JavaScript/TypeScript (React.js, Node.js)
  • Proficiency with modern database technologies (PostgreSQL, Vector DBs, OpenSearch, DynamoDB)
  • Proficiency with Cloud architecture and scalability best practices, in particular AWS (Lambda, serverless, cloud-native services)
  • Hands-on experience with A/B testing platforms (GrowthBook, Optimizely, LaunchDarkly, etc.)
  • Familiarity with feature flag systems and controlled experiment rollout strategies
  • Experience with product analytics tools (Amplitude, Segment, Tableau)
  • Ability to translate growth hypotheses into technical experiments quickly and iteratively
  • Strong data-driven mindset with the ability to evaluate experiment outcomes statistically
  • Comfortable working in fast-moving, cross-functional growth teams
Job Responsibility
Job Responsibility
  • Collaborate with growth, product, and data teams to design and implement A/B tests and growth experiments focused on user activation
  • Build, deploy, and maintain full-stack features and experiment infrastructure (frontend + backend)
  • Implement and manage feature flagging systems to enable rapid testing and controlled rollouts
  • Work with GrowthBook (or similar experimentation platforms) to set up, track, and analyze experiments
  • Instrument and track user behavior in Amplitude and other analytics platforms to generate insights
  • Write clean, scalable, and maintainable code across the React frontend and Node.js backend
  • Monitor and evaluate experiment outcomes, providing actionable insights and recommendations
  • Balance speed of experimentation with engineering best practices, ensuring quality while moving quickly
  • Fulltime
Read More
Arrow Right

Senior Full Stack Data Engineer

Senior Full Stack Data Engineer role in Citi's Chief Technology Office (CTO) Tec...
Location
Location
India , Pune
Salary
Salary:
Not provided
https://www.citi.com/ Logo
Citi
Expiration Date
Until further notice
Flip Icon
Requirements
Requirements
  • Minimum of 8 years of proven experience in software development
  • Significant experience as a Data Engineer and Full Stack Developer
  • Strong proficiency in SQL for data querying, manipulation, and optimization
  • Experience with NoSQL databases, such as MongoDB
  • Expertise in designing and developing data pipelines for ingestion, transformation, and processing of large datasets
  • Deep understanding of multithreading, thread pools, Object-Oriented Programming (OOP) concepts, and design patterns
  • Demonstrated experience working in an Agile software development environment
  • Excellent communication, problem-solving, and analytical skills
  • Proficiency in at least one of the following programming languages: Java or Python
  • Strong knowledge of DevOps practices, including source control management (e.g., Git), Continuous Integration (CI), Continuous Delivery/Deployment (CD), and automated deployments
Job Responsibility
Job Responsibility
  • Design and develop scalable data solutions leveraging platforms such as Iceberg, Snowflake, Trino, or other modern data ecosystems
  • Design, build, and optimize robust Extract, Load, Transform (ELT) and Extract, Transform, Load (ETL) data pipelines
  • Collaborate effectively with domain experts, product managers, analysts, and data scientists to understand data requirements and deliver efficient data solutions
  • Enable advanced analytics and machine learning workflows by ensuring the delivery of high-quality, reliable, and timely data
  • Implement and manage CI/CD pipelines to automate data engineering workflows across both cloud and on-premises environments
  • Research, evaluate, and recommend the integration of open-source technologies into our data platform
  • Clearly communicate complex technical details, project progress, and challenges to both technical and non-technical stakeholders
  • Design, develop, and implement scalable full-stack applications using technologies such as JavaScript, ReactJS, NodeJS, Python, and SQL/NoSQL databases
  • Write clean, efficient, well-documented, and maintainable code, adhering to industry best practices
  • Fulltime
Read More
Arrow Right

Senior UI Server Full Stack Engineer - Fixed Income Tech

Senior UI Server Full Stack Engineer position in Fixed Income Technology at Citi...
Location
Location
United Kingdom , London
Salary
Salary:
Not provided
https://www.citi.com/ Logo
Citi
Expiration Date
Until further notice
Flip Icon
Requirements
Requirements
  • Full-stack engineer with experience in designing and developing robust, scalable, and maintainable applications applying Object Oriented Design principles
  • Knowledge and experience of Java development using Java, Java 8+ (or later), and relevant Java frameworks such as Spring Boot, Spring MVC, and Hibernate
  • Experience designing and implementing message-driven systems for reliable, asynchronous processing in low-latency, high-throughput, distributed environments
  • Extensive experience with Linux environments, including system administration, shell scripting, and performance tuning
  • Proficient in multithreading, concurrency and performance tuning
  • Experience with caching technologies (e.g., Gemfire, Redis)
  • Experience with middleware (Tibco, Solace)
  • Openshift/Kubernetes experience is a plus
  • Experience with Agile software development processes with strong emphasis on test driven development
  • Strong knowledge of CI/CD pipelines and experience in tools such as JIRA, BlackDuck, SONAR
Job Responsibility
Job Responsibility
  • Designing and developing robust, scalable, and maintainable applications
  • Implementing message-driven systems for reliable, asynchronous processing
  • Building sophisticated tooling for development and production team use
What we offer
What we offer
  • 27 days annual leave (plus bank holidays)
  • Discretional annual performance related bonus
  • Private Medical Care & Life Insurance
  • Employee Assistance Program
  • Pension Plan
  • Paid Parental Leave
  • Special discounts for employees, family, and friends
  • Access to learning and development resources
  • Business casual workplace
  • Hybrid working model (up to 2 days working at home per week)
  • Fulltime
Read More
Arrow Right

Senior Full-Stack Web Application Developer / Software Engineer

You will be hands-on, leading the design, implementation, testing, launch, and s...
Location
Location
United States , Bartlett
Salary
Salary:
90000.00 - 180000.00 USD / Year
apharmony.com Logo
apHarmony Inc.
Expiration Date
Until further notice
Flip Icon
Requirements
Requirements
  • Bachelor's Degree in Computer Science or related field
  • In-depth understanding of JavaScript
  • Ability to write cross-browser and cross-platform applications
  • 5+ years experience writing reusable, maintainable, and well-tested code
  • Excellent verbal and written communication skills
  • Excellent teamwork and project management skills
Job Responsibility
Job Responsibility
  • Leading the design, implementation, testing, launch, and support of the various applications
  • Analyzing and Defining Requirements
  • Developing Full-stack Applications
  • Testing
  • Deployment
  • Fulltime
Read More
Arrow Right

Senior Full Stack Engineer

Chainway Labs is seeking a Senior Full Stack Engineer to join our team at Citrea...
Location
Location
Salary
Salary:
Not provided
chainway.xyz Logo
Chainway Labs
Expiration Date
Until further notice
Flip Icon
Requirements
Requirements
  • 3+ years building full-stack production apps with Node.js/TypeScript and Next.js
  • Strong Postgres skills: schema design, transactions, indexing, query tuning
  • Experience designing reliable APIs and background job workflows
  • Solid testing: unit/integration and contract testing against real services
  • Understanding of precision/rounding and money handling
  • Bitcoin/crypto domain knowledge: UTXO set, mempool policy, Taproot, PSBT
Job Responsibility
Job Responsibility
  • Build type-safe services in Node.js / Next.js
  • design clean REST (or RPC) APIs
  • Model data and write performant PostgreSQL queries, indexes, and migrations
  • Implement Bitcoin-aware business logic
  • Integrate with Bitcoin nodes/daemons (RPC/JSON-RPC), handle reorgs, and maintain idempotent jobs
  • Own reliability: observability, structured logging, alerting, and back-pressure queues
  • Bake in security from day one
  • Fulltime
Read More
Arrow Right

Senior Engineer II - Full Stack Java

We are seeking a highly skilled Senior Software Engineer to join our dynamic tea...
Location
Location
India , Noida
Salary
Salary:
Not provided
daxko.com Logo
Daxko
Expiration Date
Until further notice
Flip Icon
Requirements
Requirements
  • Bachelor's degree in Computer Science, Software Engineering, or a related field
  • Minimum of 6 years of experience in commercial software development
  • Strong proficiency in Core Java and Advanced Java, with knowledge of the latest JDKs
  • Extensive experience with object-oriented programming and design principles
  • Expertise in web services, service-oriented architectures, and API development
  • Proficient in JavaScript, HTML5, and CSS3 for front-end development
  • Solid understanding of Spring and Hibernate frameworks
  • Experience with testing frameworks such as JUnit and Mockito
  • Familiarity with CICD tools, including Jenkins and GitLab
  • Proficiency in version control systems, particularly Git
Job Responsibility
Job Responsibility
  • Collaborate with product managers, architects, and other software engineers to design and implement best-in-class software solutions
  • Develop and maintain robust, scalable, and efficient Java-based applications using modern technologies and frameworks
  • Write optimized Java code, adhering to object-oriented programming principles and best practices
  • Design, build, and manage RESTful APIs to facilitate seamless communication between applications
  • Implement and maintain front-end components using JavaScript, HTML5, and CSS3
  • Conduct thorough code reviews and participate in technical discussions to ensure high-quality software delivery
  • Debug and troubleshoot complex technical issues to improve application functionality and performance
  • Implement comprehensive unit testing and participate in the full software development life cycle
  • Utilize development tools such as Git, Maven, and Jenkins to manage project dependencies and streamline deployment processes
  • Ensure application security by implementing best practices and adhering to compliance standards
What we offer
What we offer
  • Hybrid work model
  • Leave entitlements
  • Hospitalization/caregiving leaves
  • Paid parental leaves (Maternity, Paternity, & Adoption)
  • Group Health Insurance
  • Accidental Insurance
  • Tax-saving reimbursements
  • Provident Fund (PF)
  • Casual work environments
  • Company Events and Celebrations
  • Fulltime
Read More
Arrow Right
Jobs by Category
Art and Entertainment Jobs Banking Jobs Call Center Jobs Construction Jobs Consulting Jobs Customer Service Jobs Education Jobs Energy Jobs Finance Jobs Gastronomy Jobs Health and Beauty Jobs Hospitality and Tourism Jobs Human Resources Jobs Insurance Jobs IT - Administration Jobs IT - Software Development Jobs Legal Jobs Logistics Jobs Manufacturing Jobs Marketing, Digital Marketing, SEO, SEM Jobs Media Jobs Nursing Jobs Office Administration Jobs Pharmacy Jobs Physical Work Jobs Public Relations Jobs Public Sector Jobs Purchasing Jobs Quality Control Jobs Real Estate Jobs Research and Development Jobs Sales Jobs
Job Positions Jobs by Country
United States Jobs United Kingdom Jobs India Jobs Canada Jobs Australia Jobs Germany Jobs Ireland Jobs Poland Jobs
Company
Blog About Us Contact
Follow Us
Facebook
X (Twitter)
LinkedIn
Instagram
CrawlJobs Group
ITFlashcards AllDevBlogs
© 2026 CrawlJobs Ltd. All Rights Reserved
Terms & Conditions Privacy Policy