15 beste vacatures voor de functie van software developer in delft, zh (nieuwe medewerkers gezocht)

Sr. Back-end Developer
Yuki online boekhouden —Rotterdam
- Azure
- DevOps
- Databases
- Budget voor professionele ontwikkeling
Java CMS Developer
Finalist —Rotterdam
- Hybride werken
- Kantoor
- Java
- Analytisch vermogen
- Reiskostenvergoeding
- Flexibele werkuren
Lead Front end Developer
Nationaal Cyber Security Centrum —Den Haag
- € 4.818 - € 7.094 per maand
- Parttime
- Hybride werken
- DevOps
- Kantoor
- JavaScript
- Reiskostenvergoeding
- Bedrijfsfitness
1 dag
Python Developer
Van Oord —Rotterdam
- Fulltime
- Master
- Analytisch vermogen
- Bachelor
- Reiskostenvergoeding
- Zorgverzekering
8 dagen
Vacature Front end developer
The Dare Company —Rotterdam
- E-mail
- HTML
Software Developer | Data & AI‑oplossingen
Veneficus B.V. —Rotterdam
- € 3.250 - € 10.000 per maand
- Fulltime
- Hybride werken
- Informatica
- Azure
- Informatica
- Budget voor professionele ontwikkeling
Snel solliciteren
Webprogrammeur / Softwareontwikkelaar (m/v)
KRATZ Business Solutions —Capelle aan den IJssel
- E-mail
- Python
Medior Full Stack .NET developer met keuze
Ranshuijsen Van Loon —Rotterdam
- € 3.500 - € 4.500 per maand
- Fulltime
Full-Stack Developer
Portbase —Rotterdam
- Fulltime
- Hybride werken
- Java
- AWS
- Analytisch vermogen
Snel solliciteren
Frontend Developer for Space applications
Vector Synergy —Den Haag
- Troubleshooting
- Analytisch vermogen
- Python
Snel solliciteren
Lead Java Developer
Immigratie- en Naturalisatiedienst —Den Haag
- € 4.818 - € 7.094 per maand
- Fulltime
- Hybride werken
- Informatica
- DevOps
- Kantoor
- Reiskostenvergoeding
- Budget voor professionele ontwikkeling
2 dagen
Full Stack Developer | 52K-78K | Rotterdam | IT Services / IT Consulting
Guidewell —Rotterdam
- € 4.000 - € 5.000 per maand
- Fulltime
- Hybride werken
- SQL
- JavaScript
- HTML
- Flexibele werkuren
Snel solliciteren
Backend Developer | Magento | e-commerce
MatchMatters BV —Rotterdam
- € 38 - € 48 per maand
- Fulltime
- Linux
- Reiskostenvergoeding
Snel solliciteren
Expert Java Developer (remote from Europe) - Deadline 17/09/26
AlmavivA de Belgique —Den Haag
- Parttime
- Thuiswerk
- Java
- Databases
- Bachelor
Snel solliciteren
4 uur
Agentic AI Full-Stack Developer (100 % remote) (m/f/d)
EWOR GmbH —Den Haag
- Thuiswerk
- Microsoft Powerpoint
- Engels
- Communicatieve vaardigheden
1 dag

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Sr. Back-end Developer

Yuki online boekhouden
Rotterdam

Nu solliciteren

Vacaturegegevens

Secundaire arbeidsvoorwaarden

Budget voor professionele ontwikkeling

Kwalificaties

ASP.NET
Azure
Visual Basic
Relationele databases
DevOps
C#
Microsoft SQL Server
NoSQL
MongoDB
.NET
Databases
AWS
Analytisch vermogen
JavaScript
Begeleiding
Angular
Scrum
GitHub
APIs
Schaalbaarheid
Agile
S3
DynamoDB
Vue.js

Volledige vacaturetekst

As Senior Back-end Developer, you own, build, and scale the core financial engine and infrastructure that form the heartbeat of our accounting platform. With your deep .NET expertise, you turn complex, business-critical systems into code that's fast, reliable, and built to last. Together with your team, you guide junior developers and help ship the features and integrations our platform depends on. And you don't just maintain what's there: you look for ways to make it faster, cleaner, and more resilient.

Time to grow. Time to thrive.

We are Nmbrs. We build smart business software that removes unnecessary complexity for SMEs and the professionals who support them. Nmbrs brings together four established product organisations—Payroll, Accounting, Invoicing and Reporting—with teams across the Netherlands, Sweden and Portugal.

We are one brand with a shared ambition, while continuing to work from the expertise and strengths of our individual organisations. We join forces where it makes sense, while keeping teams, expertise and decision-making close together.

For this role, you'll join Nmbrs Accounting in Rotterdam, working closely with the colleagues in your local team while being part of the wider Nmbrs organisation.

Your role

We are currently hiring two Senior Back-end Developers for two distinct, high-impact teams within our development organization: Team AO Ops and Team Platform.

As a senior developer, you participate in the entire application lifecycle — optimizing and refactoring existing codebases, enhancing the performance of critical applications, and building readable, maintainable, and performant code using the best software practices. You're also a technical reference for the team: you guide junior developers and help implement new features and functionality into our product.

Team AO Ops Team AO Ops is responsible for the bedrock of our software: the core accounting domain. The team's mission is to ensure Nmbrs Accounting's financial engine remains rock-solid, highly performant, and exceeds our users' expectations every single day.

Team Platform Team Platform focuses entirely on system-technical excellence and internal tooling rather than client-facing features — the team owns internal tooling/processes and integration with other Visma solutions.

(During the intake conversation, we'll walk you through both team dynamics in detail, so together we can figure out which challenge fits your expertise best.)

In practice, you will:

Feature development & integration: Work on implementing new features, APIs, system integrations, and data interfaces (with external parties or Visma solutions), ensuring they're efficient, robust, and aligned with user/system needs.
Code optimization: Optimize and refactor existing codebases, focusing on improving performance, readability, and maintainability.
Performance enhancement: Optimize business-critical applications for maximum speed and scalability under heavy system load.
Mentoring & coaching: Provide guidance, peer reviews, and support to less experienced team members, helping them improve their technical skills and grow professionally.
Team collaboration: Work closely with cross-functional team members and technical stakeholders, fostering effective communication to achieve project goals.

Your impact

Your work directly determines how reliable and performant the financial engine at the core of the Nmbrs Accounting module really is. When you optimize a critical application under heavy load, it's the reason thousands of accountants and entrepreneurs can trust their numbers are right, every single day. When you ship a clean integration instead of a brittle one, it's one less production fire for the whole team.

You're also raising the bar for the developers around you: as a senior reference point, the code reviews and mentorship you provide shape how the next generation of developers on your team writes and thinks about software.

You bring

You're a technical reference point with an autonomous, analytical mindset and strong organizational skills. You care about software craftsmanship, love tackling performance bottlenecks, and enjoy sharing your expertise with the team.

At least 4 years of experience as a back-end developer using .NET technologies (VB.NET/C#).
Experience coaching and mentoring junior developers (e.g. peer reviewing, sharing best practices).
Strong experience with relational database engines (MSSQL), and with API development (HTTP, REST, .NET Web API).
Experience with Agile methodologies (Scrum), and with Azure DevOps and/or GitHub.
An autonomous, analytical mindset and strong organizational skills.

Bonus points:

Familiarity with AWS S3/SNS/SQS.
Some experience with JavaScript frameworks (e.g. Vue, Prototype, Angular).
Experience in performance-critical applications.
Familiarity with OCR systems and Machine Learning (ML).
Experience with ASP.NET.
Familiarity with NoSQL databases (e.g. MongoDB, DynamoDB).

You don't need to tick every possible box. If you recognise yourself in the role and believe you can make an impact, we'd like to hear from you — let us know in your application (or during the intake) if you have a preference between Team AO Ops and Team Platform, or if you're open to either.

We offer

Personal development: A generous training budget, available directly after your probation period, for specialized certifications, courses, and training to solidify your technical expertise.
Time off and flexibility: 28 vacation days (and the option to buy 5 extra days), plus the possibility of Workation: up to 5 weeks per year of remote work.
Well-being & focus: Access to lifestyle coaches, healthy lunches, and other initiatives that contribute to your well-being and focus, including the possibility to lease a bike via Lease-a-Bike.
Financial security: A competitive base salary with attractive benefits, such as full pension coverage.
Optimal workplace: The best hardware, including a home-office budget to set up your remote workspace.
Plenty of opportunities: Enjoy the speed and autonomy of an innovative software-collective, backed by the stability, vast resources, and global career network of the Visma Group.
Team & culture: Participate in team-building days and other Nmbrs events that strengthen the close team spirit in a diverse and international environment.

What does the application process look like?

Apply: Apply now! We will contact you as soon as possible.
Get to know us: Meet us through our Talent Acquisition Team.
First interview: Take a deep dive with the Tech Lead and SDM.
Technical interview: Prepare a take-home assessment and discuss your answers with our Technical team.
In-office interview: Meet our People & Culture Manager and Software Development Manager.
Offer: If we see a match — you'll receive an offer!

Nu solliciteren

Verfijn je zoekopdracht

software developer vacatures in delft, zh

Sr. Back-end Developer

Java CMS Developer

Lead Front end Developer

Python Developer

Vacature Front end developer

Software Developer | Data & AI‑oplossingen

Webprogrammeur / Softwareontwikkelaar (m/v)

Medior Full Stack .NET developer met keuze

Full-Stack Developer

Frontend Developer for Space applications

Lead Java Developer

Full Stack Developer | 52K-78K | Rotterdam | IT Services / IT Consulting

Backend Developer | Magento | e-commerce

Expert Java Developer (remote from Europe) - Deadline 17/09/26

Agentic AI Full-Stack Developer (100 % remote) (m/f/d)

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