Full-Stack Software Engineer

OpsArmy; Warszawa; On-site; PLN 150,000 - 230,000; Full time

Job summary

OpsArmy is seeking a hungry, scrappy Full-Stack Software Engineer to join our startup team in Warsaw. This hands-on role rewards ownership, fast learning, and the ability to work across multiple hats in a fast-paced environment.

You’ll build, maintain, and integrate front-end and back-end features, collaborating with teammates to turn product requirements into working solutions while writing clean, scalable code and resolving issues quickly.

Qualifications

• Strong experience as a Full-Stack Software Engineer or Developer.
• Experience building and maintaining production applications.
• Strong understanding of both front-end and back-end development.
• Ability to work independently and take ownership of technical tasks.
• Strong problem-solving and debugging skills.
• Comfortable with ambiguity and learning new technologies quickly.
• Strong English communication skills.
• Strong sense of urgency and ownership.

Responsibilities

• Build, maintain, and improve full-stack web applications
• Develop and integrate front-end and back-end features
• Work closely with the team to turn product requirements into working solutions
• Troubleshoot, debug, and resolve technical issues
• Write clean, maintainable, and scalable code
• Take ownership of projects and features from development through implementation
• Research and learn new technologies, tools, and frameworks as needed
• Identify problems proactively and find practical solutions
• Work in a fast-paced environment where priorities may change quickly
• Collaborate with team members to improve product functionality and performance

Skills

Full-Stack development

Production-grade apps

Front-end & Back-end

Independent worker

Problem-solving

English communication

Learning quickly

Ownership

Job description

Full-Stack Software Engineer

About the Role

We are looking for a hungry, scrappy Full-Stack Software Engineer who thrives in a startup environment and is excited to build, solve problems, and move quickly.

This is a hands-on role for someone who can work independently, figure things out, and take ownership without needing everything mapped out for them. You should be comfortable wearing multiple hats, learning new technologies when needed, and finding practical solutions when there isn't an obvious answer.

We're especially interested in engineers with startup experience who are motivated by building products, solving real problems, and making an impact.

Key Responsibilities

• Build, maintain, and improve full-stack web applications
• Develop and integrate front-end and back-end features
• Work closely with the team to turn product requirements into working solutions
• Troubleshoot, debug, and resolve technical issues
• Write clean, maintainable, and scalable code
• Take ownership of projects and features from development through implementation
• Research and learn new technologies, tools, and frameworks as needed
• Identify problems proactively and find practical solutions
• Work in a fast-paced environment where priorities may change quickly
• Collaborate with team members to improve product functionality and performance

Required Qualifications

• Strong experience as a Full-Stack Software Engineer or Developer
• Experience building and maintaining production applications
• Strong understanding of both front-end and back-end development
• Ability to work independently and take ownership of technical tasks
• Strong problem-solving and debugging skills
• Comfortable working with ambiguity and figuring things out independently
• Strong English communication skills
• Ability and willingness to learn new technologies quickly
• Strong sense of urgency and ownership

Preferred Experience

• Previous experience working at a startup or fast-growing company
• Experience working on products from early-stage development through launch
• Experience working in small, lean engineering teams
• Experience with modern web development frameworks and technologies
• Experience working remotely with distributed teams
• A track record of taking initiative beyond assigned tasks

What We're Looking For

We're looking for someone who is:

• Hungry — motivated to grow and take on bigger challenges
• Scrappy — resourceful and able to figure things out without constant direction
• Fast-learning — willing to learn whatever is needed to solve a problem
• Hands-on — comfortable jumping into unfamiliar code or problems
• Proactive — sees problems and opportunities instead of waiting to be told what to do
• Startup-minded — comfortable with changing priorities and limited hand-holding