Staff Software Engineer

6 dni temu

Krupnicza Kraków Poland Upside Pełny etat 120 000 zł - 180 000 zł rocznie
Job description

At Upside, we're partnering with ambitious companies across the globe to solve complex, meaningful problems through technology. We work in focused teams, combining engineering, product thinking, and design, to deliver outcomes, not just output.

Open-source is a strategic part of our work. We build and maintain a number of open-source projects that support our clients and internal R&D. Our latest release is Enthusiast, a customizable agentic AI toolkit for e-commerce.

Role Overview:

As a Staff Software Engineer, you will guide engineering teams in delivering production-grade platforms and AI-driven solutions for global clients. You'll shape technical direction, support team members, and collaborate closely with business leaders to design systems that truly move the needle. This is a hands-on role: while you'll be deeply engaged in architectural decisions and strategic conversations, you'll also remain close to the code, ensuring that technical excellence is a lived standard, not just an aspiration.

Job requirements

  • Extensive commercial experience in building web-based applications (+7 years), including 2+ years in a leadership role (Tech Lead, Team Lead, or similar).

  • Solid expertise in at least one of the following frameworks: Python, Ruby, JavaScript – and readiness to explore new technologies when needed.

  • Proven ability to design and oversee complex architectures (monoliths, microservices, distributed and asynchronous systems, messaging patterns, scalability).

  • Strong understanding of databases (PostgreSQL preferred) and performance optimization at scale.

  • Experience in cloud-native environments and CI/CD practices.

  • Excellent consulting skills – balancing technical excellence with business needs, and the ability to communicate effectively with both technical and non-technical stakeholders (CTOs, founders, product leaders).

  • Demonstrated ability to mentor engineers, provide constructive feedback, and foster technical growth.

  • Fluent English (clear written and verbal communication).

Key Responsibilities:

  • Leading, autonomous teams (3–9 people) in designing, building, and deploying complex digital platforms.

  • Driving architecture and technology choices for large-scale systems.

  • Mentoring engineers, fostering technical excellence, knowledge sharing, and a collaborative culture.

  • Partnering directly with clients, technology leaders, and founders to co-create impactful solutions.

  • Balancing technical depth with business context to deliver long-term value.

  • Ensuring engineering best practices, code quality, and CI/CD pipelines are consistently applied.

  • Staying close to AI/ML solutions and identifying opportunities to integrate them into client solutions.

What We Offer

  • Transparent progression path.

  • Flexible work: office in Kraków, hybrid or remote from anywhere in Poland, with company on-sites.

  • Additional paid days off beyond national holidays.

  • A deeply collaborative, engineering-led company culture.

  • Support for ongoing learning.

If you didn't find all the information you were looking for, have a look at our handbook - it covers a variety of different matters that could be important at this stage. If there's anything else we did not mention that you're interested in - share your thoughts with us

Salary:

Staff Software Engineer: PLN net + VAT

Including additional days off

Location:

Office in Kraków, hybrid, fully-remote.

All done

Your application has been successfully submitted

Other jobs

  • Staff Engineer – Software

    1 tydzień temu

    Kraków, Lesser Poland Relativity Pełny etat 80 000 zł - 150 000 zł rocznie

    Posting TypeRemoteJob OverviewJob Overview:At Relativity, we make software to help users organize data, discover the truth, and act on it. Our e-discovery platform is used by more than 13,000 organizations around the world to manage large volumes of data and quickly identify key issues during litigation, internal investigations, and compliance projects. We...

  • Staff Engineer

    2 godzin temu

    Kraków, Lesser Poland RemoteStar Pełny etat

    Job title : Staff Engineer / Principle EngineerWhat you'll do :Technical Leadership: Lead architectural decisions for trading systems, multi- region AWS deployments, and regulatory compliance implementations including Travel Rule and Chainalysis integrationPlatform Development: Oversee trading platform development and integrations (IBKR, exchange protocols),...

  • Staff Software Engineer

    6 dni temu

    Poland, Remote Fluxon Pełny etat 100 000 zł - 250 000 zł rocznie

    Who we areWe are Fluxon, a product development team founded by ex-Googlers and startup founders. We offer full-cycle software development: from ideation and design to build and go-to-market. We partner with visionary companies, ranging from fast-growing startups to tech leaders like Google and Stripe, to turn bold ideas into products with the power to...

  • Staff Engineer – Software

    1 tydzień temu

    Kraków, małopolskie, Polska Relativity Pełny etat 25 zł

    Job OverviewJob Overview:At Relativity, we make software to help users organize data, discover the truth, and act on it. Our e-discovery platform is used by more than 13,000 organizations around the world to manage large volumes of data and quickly identify key issues during litigation, internal investigations, and compliance projects. We are seeking a Staff...

  • Sr Staff Software Engineer Golang

    2 tygodni temu

    Kraków, Polska Opendoor Labs Inc. Pełny etat

    About Opendoor Founded in 2014, Opendoor's mission is to empower everyone with the freedom to move. We believe the traditional real estate process is broken and our goal is simple: build a digital, end-to-end customer experience that makes buying and selling a home simple, certain and fast. We have assembled a dedicated team with diverse backgrounds to...

  • Sr Staff Software Engineer Golang

    4 tygodni temu

    Kraków, małopolskie, Polska Opendoor Labs Inc. Pełny etat 34 zł

    About OpendoorFounded in 2014, Opendoor's mission is to empower everyone with the freedom to move. We believe the traditional real estate process is broken and our goal is simple: build a digital, end-to-end customer experience that makes buying and selling a home simple, certain and fast. We have assembled a dedicated team with diverse backgrounds to...

  • Senior Staff Software Engineer

    1 tydzień temu

    Kraków, Polska Netwrix Corporation Pełny etat

    About Us At Netwrix, our mission is to revolutionize data security by placing identity at the core - providing unparalleled visibility and control. Engineered and supported by over 900 highly talented, motivated employees and hundreds of trusted partners in nearly every geography, Netwrix solutions are relied upon daily by security professionals across more...

  • Senior Staff Software Engineer: Platform

    2 dni temu

    Kraków, Polska Zendesk, Inc. Pełny etat

    A leading service management company in Kraków seeks a Senior Staff Software Engineer to define and lead technical architecture for change management capabilities. This role involves building scalable, automated workflows within a collaborative environment. Ideal candidates have extensive experience with Ruby on Rails, JavaScript, and strong backend...

  • Senior Staff Software Engineer

    2 tygodni temu

    Kraków, Polska Netwrix Corporation Pełny etat

    At Netwrix, our mission is to revolutionize data security by placing identity at the core - providing unparalleled visibility and control. Engineered and supported by over 900 highly talented, motivated employees and hundreds of trusted partners in nearly every geography, Netwrix solutions are relied upon daily by security professionals across more than...

  • Staff Software Engineer

    3 tygodni temu

    Kraków, Polska Google Pełny etat

    Staff Software Engineer - AICore Miejsce pracy: Kraków Technologies we use Expected - Kotlin - C++ - Java About the project Google's software engineers develop the next-generation technologies that change how billions of users connect, explore, and interact with information and one another. Our products need to handle information at massive scale, and...