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Senior Developer - ReactJS/Typescript

Tryzens Limited is a fast growing IT solutions consultancy based in the City of London with offices in Bulgaria, India and Australia. Our areas of expertise include delivery of eCommerce solutions, multi-channel retail solutions and project management amongst others. We provide best of breed solutions and services to several blue chip clients primarily within retail, financial services and other industries. We have built our delivery focused reputation upon technical innovation, in-depth business knowledge, and creative vision, all of which supports our objective of helping clients to gain true value from eCommerce. We love what we do and our clients love our work.


Due to expanding our team in Sofia we are looking for a Technical Lead ReactJS.

  • Overall 6 to 10 Years of IT experience.
  • At least 6 years of Web development experience.
  • At least 6 years of Web development experience with React
  • At least 2 year of proven experience in developing in React along with Tailwindcss or other css framework.
  • Solid understanding of web technologies, usability, and information architecture.
  • Understanding of platform and browser compatibility issues.
  • Strong understanding of JavaScript and related technologies
  • Experience of GIT version control system
  • Very good written and verbal communication skills.
  • Ability to handle multiple tasks and be highly organized.
  • Detail oriented, self-motivated.
  • Ability to communicate professionally with everyone, both internal and external.
  • Very comfortable in a fast-paced environment.


Preferences will be given to candidates with:

  • Experience with React, Tailwindcss, Nextjs, Remix, React-router, Nodejs
  • Experience with Typescript
  • Understanding of Nextjs or React-Router / Remix
  • Understanding of Testing framework like Jest, Enzyme, Chai, Mocha etc.
  • Understanding of GraphQL and Apollo client
  • Computer Science or related Degree
  • Experience in: Jira, Agile Development
  • Experience using web services and APIs
  • Understanding of test-driven development
  • Understanding of Playwright and end-to-end testing

Responsibilities:

  • Participate in discovery phase
  • Provide estimation of business requirements
  • Highlight possible flows and inconsistencies in business requirements
  • Work closely with software architects and business analysts to ensure requirements are crystal clear and properly translated into work packages
  • Assign tasks to relevant development talents
  • Review estimates with developers to assure business requirements can be delivered on time with the desired code quality (only in case developers have raised concerns around estimation)
  • Work closely with clients and developers on resolving issues related to design and requirements
  • Implement efficient and effective strategies for software development
  • Ensure that development coding standards, policies and procedures are strictly followed
  • Ensure all team members apply same technologies, tools and techniques during development lifecycle
  • Provide high level solutions and estimations for business needs based on accumulated business knowledge
  • Review Functional Specification Documents and highlight possible flaws, deviations from initial business requirements or new functionalities being pushed through updated requirements and designs
  • Ensure that the final deliverable within the development team satisfies the business requirements as specified
  • Ensure that projects are accurately estimated and delivered to schedule
  • Demonstrate flexibility to respond to change in business requirements
  • Contribute to the process of continuous improvement by highlighting pain points in the projects phase – pre-sale, discovery, planning, development/delivery
  • Demonstrate ownership of all work developed by the team members
  • Ensure project workflow is strictly followed by all team members
  • Train and integrate new team members and proactively support the continued development of existing team members
  • Build and promote a positive working environment for the team
  • Effectively manage team members in line with company policy and procedures, including performance, development, disciplinary and conflict resolution with effective feedback
  • Implement team goals and objectives


• extremely competitive remuneration package
• technical trainings and certifications
• flexible working hours
• food and gift vouchers
• additional health insurance
• great work-life balance and 25 days annual vacation
• 1 day birthday leave
• regular team events
• a positive and fun environment

What You Should Know About Senior Developer - ReactJS/Typescript, Tryzens Global

Tryzens Limited is on the lookout for a Senior Developer in ReactJS/Typescript! If you have a passion for eCommerce solutions and a knack for technical innovation, you might just be the perfect fit for our growing team based in Sofia. With over 6 years of web development experience, you'll bring your expertise in React and modern CSS frameworks like Tailwindcss to create exceptional user experiences for our blue-chip clients in retail and financial services. Your skill set will include a solid understanding of JavaScript, along with familiarity in tools such as GIT, Agile methodologies, and various testing frameworks like Jest. At Tryzens, our collaborative culture means you'll work closely with software architects and business analysts to ensure requirements are met with clarity and precision. You will be responsible for assigning tasks, overseeing development quality, and providing valuable input to continuous improvement processes. With a supportive environment that promotes growth and excellent work-life balance, you can look forward to 25 days of annual vacation, birthday leave, and opportunities for team events. If you're detail-oriented, self-motivated, and thrive in fast-paced environments, we'd love to hear from you!

Frequently Asked Questions (FAQs) for Senior Developer - ReactJS/Typescript Role at Tryzens Global
What are the responsibilities of a Senior Developer at Tryzens Limited?

As a Senior Developer at Tryzens Limited, your responsibilities include participating in the discovery phase, providing estimations on business requirements, collaborating closely with software architects and business analysts, and ensuring coding standards are upheld throughout the development process. Additionally, you'll manage tasks for the development team, resolve design-related issues, and promote a positive work environment while driving continuous improvement in project workflows.

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What qualifications do I need to apply for the Senior Developer position at Tryzens Limited?

To apply for the Senior Developer role at Tryzens Limited, candidates should possess 6 to 10 years of IT experience, with at least 6 years in web development and 2 years specifically focused on React and CSS frameworks like Tailwindcss. A strong understanding of JavaScript, experience with GIT, and good communication skills are essential. Experience in Typescript, Nextjs, and Agile development methodologies is highly valued.

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What skills will be beneficial for a Senior Developer at Tryzens Limited?

A successful Senior Developer at Tryzens Limited will benefit from strong skills in React, JavaScript, and CSS frameworks. Proficiency in Typescript, understanding of testing frameworks like Jest and Enzyme, and familiarity with web services and APIs will give you an edge. Being detail-oriented, organized, and capable of thriving in fast-paced environments will enhance your effectiveness in this role.

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What is the work culture like at Tryzens Limited for Senior Developers?

The work culture at Tryzens Limited emphasizes collaboration, flexibility, and continuous improvement. As a Senior Developer, you will be encouraged to contribute ideas and solutions, take ownership of your projects, and support the growth of your teammates. A positive environment is fostered through regular team events, generous vacation policies, and a focus on work-life balance.

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What opportunities for career growth does Tryzens Limited offer Senior Developers?

At Tryzens Limited, Senior Developers are provided with opportunities for professional development through technical training and certifications. The company promotes continuous learning and encourages team members to take on new challenges while supporting their growth within the organization. This commitment to employee development ensures that you will have the tools and resources to advance your career over time.

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Common Interview Questions for Senior Developer - ReactJS/Typescript
Can you describe your experience with React and Tailwindcss?

In preparing for your interview, be ready to explain specific projects where you utilized React and Tailwindcss. Discuss the challenges you faced, how you addressed them, and the final outcomes. Highlight your understanding of component-based architecture and how Tailwindcss improved the styling process of your applications.

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How do you ensure code quality when working with a team?

When asked about code quality, share your experience with code reviews and testing practices. Emphasize the importance of adhering to coding standards, using version control like GIT effectively, and the collaboration you foster among team members to ensure performance and maintainability of the codebase.

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What approaches do you take when estimating project timelines?

In your response, highlight your method for breaking down project requirements into manageable tasks, consulting with peers for their input, and considering potential risks. Discuss how clear communication with stakeholders helps set realistic expectations on delivery timelines.

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How do you handle conflicting priorities in a fast-paced environment?

Describe your strategy for prioritizing tasks, such as using a matrix to evaluate urgency and importance, and delegating where appropriate. Mention how you maintain open lines of communication with your team to ensure that everyone is aligned and focused on meeting deadlines.

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Can you give an example of how you've improved a development process?

Prepare an example where you identified pain points in the development process, proposed solutions, and implemented changes that led to a measurable improvement in efficiency or quality. This showcases your commitment to continuous improvement.

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What testing frameworks are you familiar with and how have you used them?

Discuss your experience with various testing frameworks, their purposes, and how you've integrated them into your development workflow. Provide specific examples of how these frameworks helped ensure code reliability and facilitated easier maintenance.

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What is your approach to mentoring junior developers?

Highlight your belief in fostering an encouraging learning atmosphere. Share your strategies for mentoring, such as offering regular feedback, providing resources for learning, and encouraging junior developers to ask questions and engage actively in projects.

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Describe a challenging project you worked on and how you overcame obstacles.

Choose a project that genuinely challenged you, detailing specific obstacles and how you navigated them. Discuss problem-solving techniques like collaborating with team members, researching solutions, or adjusting the project scope to meet constraints.

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How do you stay updated with new technologies and developments in web development?

Convey your commitment to continuous learning by mentioning specific resources like online courses, tech blogs, webinars, and community events. Highlight how staying informed allows you to innovate and incorporate new ideas into your work.

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What is your experience with Agile methodologies?

Share your familiarity with Agile, emphasizing your experience in Scrum or Kanban environments. Discuss how Agile practices have influenced your work habits and your approach to collaboration and feedback in team settings.

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Established in 2004 and headquartered in greater London, UK, Tryzens provides eCommerce platforms to business operations throughout organizations.

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Full-time, remote
DATE POSTED
March 21, 2025

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