.NET WinForms Developer

CSHARK; Wrocław; Hybrid; PLN 180,000 - 240,000; Full time

Benefits offered by this job

Remote‑first

Flexible hours

In-house tech workshops

Job summary

CSHARK in Wrocław is seeking an experienced .NET WinForms Developer to join the frontendengineering team and help build high-performance, real-time trading applications.

This role focuses on crafting fast, responsive, custom-rendered desktop UI, not just configuring UI frameworks. You will work with real-time data, multi-threaded UI updates, and close collaboration with C++ backend engineers to maintain low-latency communication.

Qualifications

• 5+ years hands-on experience developing desktop applications in C#/.NET (preferably .NET 8).
• Proven experience building custom UI controls from scratch (not DevExpress/Telerik/Infragistics).
• Experience with continuous real-time data streams where data is pushed to UI.
• Strong understanding of multi-threaded UI applications and safe cross-thread updates.
• Practical experience in UI performance optimization (reducing redraw cost, GC pressure, batching).
• Experience with TCP/socket-based communication.

Responsibilities

• Design, implement and optimize custom WinForms controls (charts, grids, visual components).
• Work with continuous real-time data streams and ensure ultra-responsive UI under load.
• Ensure smooth multi-threaded UI updates without blocking or freezing.
• Collaborate with backend engineers (C++ systems) for low-latency TCP/socket communication.
• Profile, debug, and tune rendering performance (GC pressure, paint cost, batching, flicker control).
• Improve engineering practices and influence UI architecture and usability.

Skills

5+ years

desktop apps in C#/.NET

custom WinForms controls

real-time data streams

multithreaded UI

C++ interoperability

TCP/socket communication

UI performance optimization

Job description

We arelooking foranexperienced .NET WinForms Developer to join the frontendengineering team and help build high-performance, real-time trading applications used byprofessional traders.

This role is not about configuring UI frameworks – it is about crafting fast, responsive, custom-rendered desktop UI .

C#

.Net

Your Daily Missions

• Design, implement andoptimize custom WinForms controls (charts, grids, interactive visualization components).
• Work with continuous real-time data streams and ensure ultra-responsive UI under load.
• Ensuresmooth multi-threaded UI updates without blocking orfreezing.
• Collaborate withbackend engineers (C++ systems) tomaintain low-latency TCP/socket communication .
• Profile, debug, andtune rendering performance (GC pressure, paint cost, batching, flicker control).
• Improve engineeringpractices, andinfluence UI architecture andusability.

TheEssentials We’re Seeking

• 5+ years of hands‑on experience developing desktop applications in C#/.NET (preferably .NET 8).
• Proven experience building custom UI controls from scratch (inheriting from base controls and implementing custom rendering – not configuring DevExpress/Telerik/Infragistics).
• Experience working with continuous real-time data streams , where data is pushed to the UI (not periodic refresh).
• Strong understanding of multi‑threaded UI applications (updating UI safely from worker threads, avoiding freezes and stalls).
• Practical experience in UI performance optimization (reducing redraw cost, minimizing GC pressure, batching updates, preventing flicker).
• Experience working with TCP / socket-based communication .
• Ability to clearly explain previous UI design decisions, trade‑offs, and the impact on end users .
• Experience with trading systems , market data, or real‑time financial applications.
• Familiarity with C++ or interoperability between C# and native components.
• Understanding of high‑performance visualization and data interaction patterns.

At CSHARK, it’s not about trendy perks or the latest gaming console in the lounge. Based on feedback from our team, what truly counts is an environment conducive to focused work, structured processes, and continuous skill development. We prioritize what genuinely enriches the daily work experience, ensuring that every moment spent with us is both productive and fulfilling.

Harness the power of technology with our remote‑first approach. Work from the comfort of your space while staying connected and collaborative.

Flexible hours

Find your rhythm withhours that align toyour lifestyle. W e understand that productivity isn’t confined tothetypical 9-to-5.

International projects

Engage inprojects that transcend borders. Experience thethrill ofworking withdiverse teams andclients from different parts oftheworld. Navigate theglobal tech landscape withease. Enhance your communication skills withourtailored Business English sessions.

Participation incharity actions

Connect withthecommunity andcontribute tocauses that matter. Joinus invarious charity initiatives andbe apart ofchange that extends beyond business.

In-house technology workshops

Stay attheforefrontoftechnology. Dive deep intotopics, refine your skills, andlearn frompeers throughourregular tech workshops.

Recruitment process

01

Chat withOurRecruiter

Kick off your CSHARK adventure withaninitial interview. This is a great opportunity for us to get to know each other better andforyou toask anypreliminary questions.

02

Show Your skills

Depending ontherole, you’ll either engage in a technical interview or take on a specific task. This stage allows us to understand your expertise andoffers you a glimpse intothechallenges you might tackle atCSHARK

03

Meet theTeam

This is where themagic happens. Engage withapotential supervisor, your future team, or even aclient. It’s a deep dive intoyour prospective role andachance tograsp thecollaborative spirit ofCSHARK.

04

Crafting Your Offer

Once we recognize themutual fit, we’ll discuss thespecifics ofyour offer. We believe incrafting apackage that respects your skills, experience, andaspirations.

05

Onboarding Preparation

Once you’re set tojoin us, ourteam crafts a tailored onboarding plan. This includes setting upyour tools andaccounts, scheduling introductions tokey team members, andorganizing orientation sessions tomake your integration seamless andefficient.

Explore theHeartbeat of CSHARK

Discover theessence ofourguild’s expertise, advanced tools andtech stack, andourreal-world successes. Delve intoimpactful case studies andhear genuine insights fromourteam

Wondering about ourorganizational vision, theexecutive leadership team, thevalues we passionately uphold?

Explore ourdiverse portfolio towitness ablend ofpioneering financial regulatory solutions, next-gen manufacturing, andinnovation examples.