About the Position

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Software Development

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Poland

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Zdalnie

#.Net Developer

Poznaj Onwelo

Onwelo jest partnerem technologicznym, który dostarcza kompleksowe usługi - od strategii i architektury, przez wdrożenia, po utrzymanie - w obszarach transformacji cyfrowej, danych i automatyzacji. Nasz zespół to ponad 400 specjalistów z silnymi kompetencjami seniorskim oraz 300+ zrealizowanych projektów dla dużych organizacji w Polsce, Europie i USA. Działamy z kilku polskich miast oraz z biur w Niemczech, Szwajcarii i USA, łącząc lokalną obecność z globalnym zasięgiem.

O projekcie

W Onwelo stale rozwijamy zespoły inżynierskie i dynamicznie reagujemy na zapotrzebowanie naszych partnerów. Szukamy programistów .NET, którzy wzmocnią nasze projekty tam, gdzie aktualnie pojawiają się luki kompetencyjne lub startują nowe etapy prac.

Przechodząc jeden proces rekrutacyjny u nas, Twoje umiejętności są mapowane pod kątem bieżących potrzeb różnych zespołów. Realizujemy projekty dla klientów z branż takich jak automotive, healthcare, finance oraz media & digital marketing, a także rozwijamy produkty własne. Po weryfikacji technicznej dopasowujemy Twój profil do projektów, w których Twoje doświadczenie przyniesie największą wartość i odpowie na realne wyzwania biznesowe klienta.

Your Tasks

• Design, implementation, and development of backend applications in.NET (C#) – from architecture to ready code.
• Creating and maintaining microservices and API (REST, gRPC) and their integration with external systems.
• Working with databases (relational and NoSQL), taking care of query optimization and schema migrations.
• Implementing cloud solutions and using containerization (Docker, Kubernetes).
• Ensuring code quality through regular participation in code review, writing tests (unit, integration) and collaboration on CI/CD automation.
• Diagnosing and solving production problems and participating in monitoring and maintaining applications.
• Optionally (depending on the project): Collaborating on tasks requiring frontend support (Angular/React).

Who We Are Looking For

• Minimum 3 years of experience in commercial software development in .NET (C#) and ASP.NET Core.
• Good knowledge of microservices architecture and design patterns used in web applications.
• Proficiency in using Docker and Kubernetes.
• Practical knowledge of cloud solutions – our preferred standard is AWS, but knowledge of Azure or GCP will also be an advantage.
• Knowledge of English at least at B2 level – a necessary condition for daily communication in international projects (USA/Europe).
• Familiarity with tools for creating/managing APIs (Swagger/OpenAPI) and testing services (e.g., Postman).
• Ability to write unit and integration tests.
• Nice to have: Commercial experience or openness to working with frameworks Angular or React.

What We Offer

• Flexible hours and the possibility of hybrid or remote work
• Participation in interesting projects for global clients
• As many as 80% of promotions in our company are internal
• 90% of the management staff has a technical education
• Access to internal training and development paths
• Participation in team events, company meetings, and Town Halls
• Support in building a professional image (personal branding)
• Access to life insurance and private healthcare for you and your family
• MultiSport card, which supports health and fitness

Department
: Software Development

Locations
: Poland

Work Mode
: Remote

Apply Now

Ready to join us?

From now

Within 14 working days

Within 30 working days

After 1 month (notice period)

After 3 months (notice period)

Availability Information

Please write when you can join us and if there are situations that may affect your availability.

Type of Cooperation

Employment contract

B2B contract

Contract for services

Financial Expectations

In case of an employment contract, provide the gross monthly amount. In case of a B2B or service contract, provide the net hourly rates.

Mode of Cooperation

Remote

Hybrid

On-site

Personal Data

First Name

Last Name

Email Address

Phone Number

Wyrażam zgodę na przetwarzanie moich danych osobowych przez Onwelo Sp. z o.o. w celu udziału w bieżącym procesie rekrutacyjnym, zgodnie z Polityka prywatności. Rozumiem, że zgodę mogę wycofać w dowolnym momencie.

Wyrażam zgodę na przetwarzanie moich danych osobowych przez Onwelo Sp. z o.o. w celu udziału w przyszłych procesach rekrutacyjnych, zgodnie z Polityka prywatności. Rozumiem, że zgodę mogę wycofać w dowolnym momencie.

Are You Part of Onwelo?

Your recommendation matters - together let's create an environment full of talent.

Candidate tracking system

by Teamtailor

Privacy Policy for Employer Branding and Recruitment at Onwelo

Publication Date: 25-06-2025

Data Controller

The controller of your data processed within the scope of employer branding and recruitment activities is Onwelo Sp. z o.o., ul. Prosta 67, 00-838 Warsaw.

We manage these processes through our Career Website ("Career Website") and the related Candidate data processing system.

Data Protection Officer

You can contact the Data Protection Officer appointed by the Controller at [email protected].

Scope of the Privacy Policy

This Privacy Policy sets out the principles of processing personal data in the following cases:

• When you visit our Career Website ("Visitor")
• When you register on the Career Website to create a profile and receive information about current or future job openings ("Registered Candidate")
• When you apply for a position through the Career Website or an external service ("Applying Candidate")
• When we obtain information about you from other sites, websites, and services because we consider your profile potentially interesting for our current or future job offers ("Sourced Candidate")
• When we receive information about you from our employees or recruitment partners who found your profile interesting in the context of our current or future job offers ("Recommended Candidate")
• When we receive information about you from a person who referred you as a candidate ("Referred Candidate").

The Policy also specifies the rights you have in connection with the processing of your personal data and how you can exercise these rights.

Unless otherwise stated, the term "Candidate" in this Policy includes: Registered Candidates, Applying Candidates, Sourced Candidates, Recommended Candidates, and Referred Candidates.

1. What personal data do we process?

All individuals

• Device Information – if you visit our Career Website, we collect information about your device, such as IP address, browser type and version, session behavior, traffic source, screen resolution, preferred language, geographic location, operating system, and device usage settings.
• Technical and Statistical Data – we collect data on the use of the Career Website, such as visited URLs and activity on the site.
• Communication Data – we store information related to communication with us, including email content, social media messages, contact form data, etc.
• Contact Information – first and last name, email address, phone number, mailing address.

Candidates

• Recruitment Process Data – interview notes, test results, assessments, salary requirements, and other information obtained during recruitment.
• Application Information – CV, cover letter, work samples, references, recommendation letters, education information.
• Public Profile Information – data from public sources (e.g., LinkedIn, current employer's website) regarding your professional experience.
• Reference Information – data obtained from our employees, recruitment partners, or individuals you have listed as a reference contact.

2. From which entities do we obtain your personal data?

All individuals

• From the Career Website – we collect technical and statistical data related to the use of our Career Website and information about your device.
• Directly from you – we obtain most personal data directly from you, e.g., when you apply for a position or contact us. Some data is optional, but some may be necessary to process your application or respond to your inquiry.

References

• From a referrer – if another candidate refers you to the recruitment process, we may receive your contact information from them to establish contact.

Candidates

• From public sources – we may obtain candidate data from public sources such as LinkedIn.
• From recommendations by our employees and partners – we obtain information from individuals who found your profile interesting for current or future recruitment processes.
• From user recommendations – if another user recommends you to us as a candidate, we may obtain data from this recommendation.
• Data entered by us or in cooperation with you – some data, such as interview notes, assessment and test results, may be entered by us independently or jointly with you during the recruitment process.

3. For what purposes do we process your personal data?

Protection and enforcement of our rights and the rights of third parties. In particular, in connection with potential or actual legal claims.

• Data subjects: Persons affected by the legal issue (may be persons from any of the categories listed above).
• Categories of personal data: All categories of data mentioned above.

Sharing personal data with recipients – for the purposes listed in section 4 below.

• Data subjects: Depending on the specific purpose – as described in section 4.
• Categories of personal data processed: All categories of data mentioned above.