Backend Engineer

Tidal Financial Group

Backend Software Engineer at Tidal Financial Group handling trading applications and integrations. Collaborating with various teams to ensure seamless performance and reliability of financial tools.

Posted 6/6/2026full-timeRemote • Illinois • 🇺🇸 United StatesMid-LevelSeniorWebsite

Tech Stack

Tools & technologies

AWSAzureEC2Entity FrameworkGRPCJavaScript.NETNext.jsPostgresRedisSQL

About the role

Key responsibilities & impact

Design and develop backend services, APIs, and real-time systems for internal trading applications and external-facing client platforms in C# / .NET 10, with a focus on reliability, performance, and maintainability.
Build and maintain integrations with Bloomberg using REST, FIX, and Pub/Sub APIs to support trading operations, market data, and transaction reporting workflows.
Implement real-time data delivery using SignalR and messaging patterns using Redis for caching, queueing, and pub/sub messaging.
Design and query relational data models using Entity Framework Core, LINQ, and PostgreSQL (AWS Aurora), while collaborating with the Data team on shared data needs, including Snowflake.
Implement and maintain application security, including SSO for internal applications and appropriate authentication/authorization patterns (OAuth2, OpenID Connect) for external-facing platforms.
Partner closely with frontend, data, and DevOps teams to define API contracts, align on requirements, and deliver solutions collaboratively and efficiently.
Contribute to architectural decisions, code reviews, and engineering standards, with an emphasis on clarity, simplicity, and long-term scalability.

Requirements

What you’ll need

5+ years of backend software engineering experience with a strong focus on C# and modern .NET (.NET 6+, ideally .NET 10)
Deep proficiency in the .NET ecosystem, including Entity Framework Core, LINQ, SignalR, and related libraries
Strong experience with PostgreSQL and relational data modeling; comfortable writing and optimizing complex SQL queries
Experience building and securing both internal and external-facing APIs, including SSO integration (Microsoft Entra / Azure AD) and external authentication patterns (OAuth2, OpenID Connect)
Experience with Redis for caching, queueing, and pub/sub messaging patterns
Familiarity with gRPC, or openness to adopting it as part of the stack
Proficiency with Git/GitHub and modern development workflows (pull requests, code review, branching strategies)
Comfortable using JetBrains Rider or equivalent professional .NET tooling
Experience working in Agile environments, with a collaborative, team-first approach to planning and delivery
Strong communicator who can work effectively across teams, bringing clarity to technical decisions and aligning stakeholders without requiring close oversight
Self-directed and accountable, with the ability to manage priorities and follow through in a fast-moving environment.
Preferred: Experience with Bloomberg integrations using REST, FIX, and Pub/Sub APIs
Familiarity with ETF lifecycle concepts—basket creation, order management, NAV calculation, holdings reconciliation, and trade workflows
Awareness of AWS compute and infrastructure (ECS/EC2, Lambda, CloudWatch)
Familiarity with Snowflake as a data platform
Exposure to Next.js or modern frontend frameworks (helpful for cross-team collaboration)
Understanding of compliance frameworks such as SOC2
Curiosity about financial markets and trading systems, with an interest in how technology supports real-time decision-making.

Benefits

Comp & perks

Health insurance
Retirement plans
Paid time off
Flexible work arrangements
Professional development opportunities

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills & Tools

C#.NET 10Entity Framework CoreLINQPostgreSQLSQLSignalRRedisOAuth2OpenID Connect

Soft Skills

strong communicatorself-directedaccountablecollaborativeteam-first approachability to manage prioritiesclarity in technical decisionsaligning stakeholders