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.Net Developer, Associate

BlackRock

BlackRock

Software Engineering
Belgrade, Serbia
Posted on Dec 22, 2025

About this role

You'll be joining the development team, building next-generation analytics and data visualization solutions for alternative investments. Our platform serves portfolio managers, analysts, and investment professionals, providing real-time insights into fund performance, asset valuations, and risk metrics.

The backend system is a sophisticated .NET-based microservices architecture that processes complex financial data through our calculation engine, integrating with enterprise analytics platforms to deliver actionable investment intelligence.

Role Overview

As an Associate Software Developer, you will contribute to the design, development, and maintenance of mission-critical backend services for the platform. You'll work within a collaborative agile team, taking ownership of features from concept through deployment, while growing your technical expertise in financial technology and distributed systems.

Key Responsibilities

Development & Implementation (60%)

  • Design, develop, and maintain RESTful APIs using ASP.NET Core Web API (.NET 8.0)

  • Implement business logic within the system architecture

  • Build and optimize data access layers using Entity Framework Core with SQL Server and MongoDB

  • Develop microservices integration using gRPC protocol

  • Implement event-driven architecture components using Azure Service Bus and Rebus messaging framework

  • Create and maintain Docker containerization for services

  • Develop real-time communication features using Azure SignalR

  • Apply CQRS patterns using MediatR for command/query separation

Code Quality & Testing (25%)

  • Write comprehensive unit and integration tests using xUnit (target: >80% code coverage)

  • Conduct thorough code reviews for peers, ensuring adherence to coding standards

  • Debug and troubleshoot production issues with systematic root-cause analysis

  • Implement automated testing strategies and participate in continuous integration workflows

  • Ensure code maintainability and documentation standards are met

Collaboration & Communication (15%)

  • Participate actively in agile ceremonies (daily standups, sprint planning, retrospectives)

  • Collaborate with product managers, architects, and senior engineers on feature design

  • Document technical specifications and API contracts using OpenAPI/Swagger

  • Mentor junior developers and share knowledge through code reviews and pair programming

  • Communicate technical concepts clearly to both technical and non-technical stakeholders

Required Technical Skills

Core Technologies

  • 2-4 years of professional software development experience

  • Strong proficiency in C# and .NET Core/.NET 8.0 framework

  • Solid understanding of ASP.NET Core for building web APIs

  • Experience with RESTful API design and implementation

  • Knowledge of object-oriented programming principles and design patterns

  • Understanding of asynchronous programming and concurrent operations

Data & Persistence

  • Hands-on experience with Entity Framework Core or similar ORM

  • Proficiency in SQL Server (T-SQL, stored procedures, query optimization)

  • Familiarity with NoSQL databases (MongoDB preferred)

  • Understanding of database design, normalization, and indexing strategies

DevOps & Tools

  • Experience with Docker containerization

  • Proficiency with Git version control and branching strategies

  • Familiarity with CI/CD pipelines (Azure DevOps preferred)

  • Understanding of cloud platforms, particularly Microsoft Azure

  • Experience with Postman or similar API testing tools

Architecture & Patterns

  • Understanding of microservices architecture principles

  • Knowledge of dependency injection and IoC containers (Autofac/Microsoft.DI)

  • Familiarity with CQRS and event-driven patterns

  • Understanding of authentication/authorization (JWT, OAuth)

Preferred Technical Skills

  • Experience with gRPC for inter-service communication

  • Knowledge of message broker systems (Azure Service Bus, RabbitMQ, Kafka)

  • Familiarity with Azure services (Application Insights, Key Vault, SignalR)

  • Experience with Swagger/OpenAPI specifications

  • Understanding of clean architecture and domain-driven design

  • Knowledge of performance optimization and profiling tools

  • Experience with logging frameworks (Serilog preferred)

  • Familiarity with Redis for caching strategies

Required Soft Skills (BlackRock Core Competencies)

Collaboration & Teamwork

  • Proven ability to work effectively in cross-functional teams

  • Strong interpersonal skills with a collaborative mindset

  • Willingness to support teammates and share knowledge proactively

  • Ability to give and receive constructive feedback professionally

Risk Awareness & Attention to Detail

  • Meticulous approach to code quality and testing

  • Understanding of the critical nature of financial systems and data accuracy

  • Proactive identification of potential issues and edge cases

  • Strong commitment to security best practices and data protection

Client Focus & Business Acumen

  • Genuine interest in understanding user needs and business requirements

  • Ability to translate business requirements into technical solutions

  • Focus on delivering value to internal and external stakeholders

  • Understanding of the alternative investments domain (or willingness to learn)

Communication & Problem-Solving

  • Clear and concise communication skills (verbal and written)

  • Strong analytical and problem-solving abilities

  • Ability to break down complex problems into manageable components

  • Comfortable presenting technical concepts to diverse audiences

Professional Growth & Adaptability

  • Self-motivated with a continuous learning mindset

  • Ability to adapt to changing priorities and technologies

  • Openness to feedback and commitment to personal development

  • Intellectual curiosity and desire to understand "the why" behind decisions

Integrity & Professionalism

  • Strong ethical standards and commitment to BlackRock's fiduciary principles

  • Reliability and accountability for deliverables

  • Professional demeanor and positive attitude

  • Respect for confidentiality and sensitive information

Education & Certifications

  • Bachelor's or Master's degree in Computer Science, Software Engineering, Information Technology, or related field

  • OR equivalent practical experience with demonstrable technical portfolio

Our benefits

To help you stay energized, engaged and inspired, we offer a wide range of employee benefits including: retirement investment and tools designed to help you in building a sound financial future; access to education reimbursement; comprehensive resources to support your physical health and emotional well-being; family support programs; and Flexible Time Off (FTO) so you can relax, recharge and be there for the people you care about.

Our hybrid work model

BlackRock’s hybrid work model is designed to enable a culture of collaboration and apprenticeship that enriches the experience of our employees, while supporting flexibility for all. Employees are currently required to work at least 4 days in the office per week, with the flexibility to work from home 1 day a week. Some business groups may require more time in the office due to their roles and responsibilities. We remain focused on increasing the impactful moments that arise when we work together in person – aligned with our commitment to performance and innovation. As a new joiner, you can count on this hybrid model to accelerate your learning and onboarding experience here at BlackRock.

About BlackRock

At BlackRock, we are all connected by one mission: to help more and more people experience financial well-being. Our clients, and the people they serve, are saving for retirement, paying for their children’s educations, buying homes and starting businesses. Their investments also help to strengthen the global economy: support businesses small and large; finance infrastructure projects that connect and power cities; and facilitate innovations that drive progress.

This mission would not be possible without our smartest investment – the one we make in our employees. It’s why we’re dedicated to creating an environment where our colleagues feel welcomed, valued and supported with networks, benefits and development opportunities to help them thrive.

For additional information on BlackRock, please visit @blackrock | Twitter: @blackrock | LinkedIn: www.linkedin.com/company/blackrock

BlackRock is proud to be an Equal Opportunity Employer. We evaluate qualified applicants without regard to age, disability, race, religion, sex, sexual orientation and other protected characteristics at law.