Senior Back-end Engineer (NodeJS)

SwingDev—a hippo company; Poland; On-site; USD 77,359 - 95,211; Full time

Benefits offered by this job

Private medical care

Flexible working hours

Team building events

Job summary

SwingDev—a hippo company is seeking a Senior Back-end Developer in Poland to architect and implement innovative solutions. You will work in an agile environment, focusing on impactful projects while ensuring security and quality in your deliverables.

With at least 5 years of experience in Node.js, JavaScript, and TypeScript, you will take ownership of your projects and enjoy development freedom. The company offers remote work, flexible hours, and comprehensive health benefits.

Qualifications

• At least 5 years of hands-on experience with Node.js, JavaScript, and TypeScript.
• Practical knowledge of at least one relational database system.
• Experience implementing the test pyramid (unit, integration, e2e tests).

Responsibilities

• Architect and implement backends and their interactions.
• Support reliable databases and APIs for real-time decision-making.
• Investigate and resolve production issues.

Skills

Node.js

JavaScript

TypeScript

PostgreSQL/MySQL/SQL Server

Microservices

Problem-solving

English communication

Tools

Docker

Kubernetes

AWS

Job description

SwingDev—a hippo company is the Polish branch of a fast-growing InsurTech product company – Hippo Insurance. We’re here to make home insurance smarter and more proactive, using tech to bring fresh solutions. We also create digital products that support our customers, always focusing on what really makes an impact. Putting a lot of effort into hiring top‑tier devs, designers, PMs, and QAs proves that we care a lot about tech experience, the attitude, human approach, and what we could call culture fit. "SwingDev is all about people" – we know that people are at the heart of everything we do. We like to have a good time and keep things light, even when tackling big projects. We could brag about what’s making us special, but we’ve boiled it down to two key ingredients: mature, companionable people who, rather than compete, prefer to inspire and have each other’s backs; a culture of trust, empathy, and positivity that keeps us together, lets us interact as teammates and friends, and truly enjoy the ride. So if you’re a Senior Back‑end Developer looking to shake things up and have a good time while you’re at it, you’ve come to the right place.

What will you do?

• You’ll architect and implement backends and their interactions with various data stores and other APIs (including 3rd party APIs)
• You’ll work in an agile environment focusing on projects that are impactful on our business
• You’ll support reliable databases and APIs for real‑time automated decision‑making.
• You’ll deploy your software using industry‑standard tooling like Kubernetes clusters, and Lambda functions.
• You’ll investigate and resolve production issues by analyzing code, data, and system behaviour and then propose and implement timely fixes to minimise user impact.
• You’ll care deeply about security in everything you do and constantly raise the baseline of how we defend our user’s data against external threats and themselves.
• You’ll implement robust automated test suites to ensure high quality and low failure rate of delivered code.
• You’ll work in a DevOps style to make sure Defense in Depth principles are followed and containers are as secure as humanly possible.
• You’ll work closely with Product Managers, Senior Engineers and Architects to understand business processes, rules, and requirements, and turn them into high‑quality code with automated tests, and deploy them to production.
• You’ll have huge creative freedom and ability to put your mark on the project, and you will take ownership and responsibility for what you do.
• You’ll have a lot of chances to develop your programming skills as well as learn a lot about how tech business is done in the US

We might be a match if you…

• Have at least 5 years of hands‑on experience with Node.js, JavaScript, and TypeScript
• Possess a good, practical knowledge of at least one relational database system, e.g. PostgreSQL/MySQL/SQL Server
• Are adept with microservices and system design patterns
• Can engage in discussions and decisions regarding software design and architecture
• Are independent problem‑solver
• Have the ability to convey ideas clearly across technical and non‑technical teams.
• Can demonstrate responsibility, accountability, and a strong sense of ownership in delivering high‑quality work.
• Have experience implementing the test pyramid (unit, integration, e2e tests)
• Utilise good security practices effectively
• Show readiness to learn and expand your skill set as required by ongoing projects
• Treat AI‑assisted development as a core part of how you work – Cursor, Claude Code, Codex or similar are in your daily setup. You have strong instincts for where AI accelerates both speed and quality vs where critical judgement has to lead.
• Have a good command of English (written & spoken)
• Are available in the afternoons – we prioritise everyone’s personal time and work‑life fit, but since we work in multinational teams, occasional evening meetings may be necessary to ensure smooth communication across time zones

What you’ll be using after joining us

• Node.js, TypeScript, Nest.js
• Docker and container‑based deployment technologies (e.g. Kubernetes/Fargate)
• Automated software testing on unit/integration/end‑to‑end levels
• Devin, an autonomous AI engineer we work with daily to parallelise and accelerate delivery across the team

You will get extra points for

• Familiarity with Docker, Kubernetes, AWS deployment processes
• Experience with profiling and performance optimisation
• Experience in giving high‑quality feedback during code review

Benefits

Salary

26 000 – 32 000 PLN + VAT on B2B.

Basics

• Form of employment of your choosing
• Remote work & flexible working hours
• Non‑service days

Health & Safety

• Private medical care with dentists & orthodontists package for you and your family
• Group life insurance
• Psychotherapists support — free online sessions with psychologists and psychotherapists
• Home physiotherapy
• Multisport card & meditation apps reimbursed 50%

Working conditions & Development

• Gear with Apple Logo and monitor
• 50% reimbursement for courses, conferences, books & certificates
• Free access to private language lessons
• 6 Personal Development days & 4 Voluntary non‑service days

Extras you may like

• Cafeteria platform — extra "stówka" every month to spend on whatever you want to
• Nanny services for parents
• Concierge services – a personal assistant to help you to deal with your everyday matters
• Chill room with table football & PlayStation 5
• Free snacks, and ice cream in the office (every day, all year round!)
• Free Friday Lunch in the office
• Team building events — we party together several times a year during the annual Offsite & Christmas Parties, beer after work, or our Winter Escape Month workation in Cyprus.