Software Engineer Senior

Litebox; Polska; Hybrid; PLN 180,000 - 240,000; Full time

Benefits offered by this job

100% remote work

15 paid days off per year

Flexible working hours

Birthday day off

Growth & development

AI tools licenses

Job summary

Litebox, a boutique digital agency, is seeking a Sr. Software Engineer to shape how digital products look and are built. You will collaborate with design and technology teams, lead complex features, and write scalable code while embracing AI tooling.

We offer 100% remote work, flexible hours, and growth opportunities. The ideal candidate has 5+ years in software dev, deep Next.js/React and TypeScript expertise, and a proactive, user-first mindset.

Qualifications

• 5+ years in software development, preferably in cross-functional teams.
• Deep expertise in Next.js/React and TypeScript.
• Strong front-end with TailwindCSS; animations with Framer Motion or GSAP.
• Back-end skills with Node.js and NestJS; understanding of security best practices.
• Experience with relational and non-relational databases (MySQL, PostgreSQL, MongoDB).
• Experience with SEO, accessibility, and web performance.
• Familiar with Agile methodologies (Scrum/Kanban).
• Ability to mentor and lead technical discussions.
• Interest in using AI-powered tools to improve workflows.
• English proficiency (B2 or higher).

Responsibilities

• Write clean, scalable, and maintainable code.
• Lead the development of complex product features with cross-functional teams.
• Build and optimize advanced, responsive UIs.
• Design, implement, and maintain scalable APIs with performance and security in mind.
• Drive architectural decisions and code reviews.
• Mentor and support other engineers.
• Identify and lead improvements in systems and processes.
• Leverage AI tools to improve velocity and quality.
• Contribute to planning and estimation with a product-first mindset.

Skills

Next.js/React

TypeScript

TailwindCSS

Framer Motion

GSAP

Node.js

NestJS

MySQL

PostgreSQL

MongoDB

SEO

Accessibility

Web performance

Agile / Scrum

Kanban

Mentoring

AI tools

GitHub Copilot

English (B2+)

React Native

AWS

Vercel

Sanity

Strapi

Contentful

Code reviews

Technical mentorship

Cursor

v0

Tools

Cursor

v0

GitHub Copilot

Job description

Litebox is a boutique digital agency on a mission to help teams build unique products. We work with some of the most innovative companies in Silicon Valley — partnering with startups and tech leaders in San Francisco to craft digital experiences we can genuinely be proud of. We believe that how we work matters just as much as what we ship.
As an AI-First company, we look for leaders who think like makers: curious, pragmatic, and eager to leverage every tool at their disposal — especially AI — to accelerate problem-solving, unblock teams, and elevate execution. We value how you reason, communicate, and align people more than rigid methodologies or process theater. We value how you reason, communicate, and execute more than memorizing a framework or an API.

Join us as a Sr. Software Engineer to work alongside our design and technology teams, taking a proactive role in shaping how digital products look and are built.

If you're passionate about building amazing applications and websites, and excited to integrate AI into your process, Litebox is the place for you

• Write clean, scalable, and maintainable code, balancing performance, quality, and delivery speed.
• Lead the development of complex product features, collaborating closely with product, design, and other engineering teams.
• Build and optimize advanced, responsive user interfaces adaptable to multiple screen sizes and platforms.
• Design, implement, and maintain scalable APIs with a strong focus on performance, security, and data integrity.
• Drive and participate in technical decision-making, architecture discussions, and code reviews.
• Mentor and support other engineers, promoting a culture of continuous learning and technical excellence.
• Identify and lead improvements in existing systems and development processes.
• Leverage AI tools (like Cursor, v0, etc.) to enhance velocity, code quality, and developer experience.
• Actively contribute to planning and estimation, bringing a product and user-first mindset to the table.

We’re looking for someone who has…

• 5+ years of experience in software development, ideally in cross-functional product teams.
• Deep expertise in Next.js/React and TypeScript.
• Experience with styling tools like TailwindCSS, and animation libraries such as Framer Motionor GSAP.
• Strong back-end skills with NodeJS and NestJS, and a solid grasp of software architecture, authentication, authorization, and security best practices.
• Experience designing and querying relational and non-relational databases like MySQL, PostgreSQL, and MongoDB.
• Advanced understanding of SEO, accessibility, and web performance.
• Comfortable working with Agile methodologies like Scrum or Kanban.
• Experience mentoring developers and leading technical discussions.
• Ability to give and receive feedback constructively, promoting a culture of continuous improvement.
• Experience (and strong interest) in using AI-powered tools (e.g., Cursor, v0, GitHub Copilot) to enhance development workflows.
• English proficiency (B2 or higher).

Nice to have

• Experience with React Native.
• Knowledge of the AWS and Vercel ecosystem.
• Experience integrating and customizing headless CMSs (e.g., Sanity, Strapi, Contentful).
• Strong background in code reviews, technical mentorship, and upholding coding standards.
• Previous use of AI tools for prototyping, debugging, and documentation.

What we offer

Life-Work Balance
100% remote work – from anywhere.
15 paid days off per year.
Flexible working hours tailored to your needs.
Day off for your birthday – celebrate your way!

LiveLite Culture
Recognition via Sparkle on Maslow.
Referral Program with incentives.
Personalized 1:1 spaces designed for meaningful conversations, development, and well-being.

Special Moments
Unique gifts on your work anniversary.
A birthday treat.
Year-end gift celebration.

Growth & Development

Paid licenses for AI tools — Claude, ChatGPT, and more — to work smarter every day
Access to internal training opportunities.
Biannual feedback & performance recognition to support your career path.