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ECM Tek, LLC · 7 hours ago

Back End Developer

Chicago, IL

Full-time

Onsite

Mid Level

3+ years exp

ECM Tek, LLC is seeking a skilled Back End Developer to join their engineering team in Chicago. The role involves designing, developing, and maintaining scalable backend systems, with a strong focus on APIs and database management to support front-end applications.

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Responsibilities

API Development: Design and implement RESTful services to support React front-end applications, ensuring secure, efficient, and scalable data exchange

Database Management: Develop and optimize database schemas, queries, and indexes using PostgreSQL (relational) and MongoDB (NoSQL) to support application needs, such as data retrieval for dynamic React components

System Architecture: Build and maintain server-side infrastructure (e.g., FastAPI, Django or similar frameworks) to handle business logic, authentication, and data processing

Integration and Collaboration: Work closely with React developers to integrate APIs, ensuring compatibility with front-end state management (e.g., Redux, Context API) and data fetching

Performance Optimization: Identify and resolve backend performance bottlenecks, such as slow database queries or inefficient API endpoints, using techniques like caching, query optimization, or load balancing

Security and Scalability: Implement secure practices (e.g., input validation, JWT authentication, CORS) and design systems to handle high traffic and large datasets

Testing and Debugging: Write unit and integration tests for APIs and backend logic using tools like Jest, Mocha, or Postman. Debug issues using logging, monitoring, or profiling tools

Collaboration and Best Practices: Participate in code reviews, document APIs (e.g., using Swagger/OpenAPI), and stay updated on backend development trends and best practices

Qualification

PostgreSQLMongoDBAPI DevelopmentJava (Spring Boot)PythonFastAPIDjangoRESTful ServicesAuthentication MechanismsArticulating Trade-offsVersion Control (Git)CI/CD PipelinesCloud PlatformsProblem-SolvingAttention to Detail

Required

Experience: 3+ years in backend development, with at least 2 years working with PostgreSQL and/or MongoDB. Experience building APIs for web applications, preferably with front-end integration

Core Technical Skills: Proficient in Java server-side development using Spring Boot and Spring MVC, deploying and running RESTful applications on Apache Tomcat servers

Proficiency in server-side programming (e.g., Python, JavaScript, or Go) and frameworks like FastAPI, Django, or Express

Strong knowledge of database design and querying with PostgreSQL (e.g., writing complex SQL queries, indexing) and MongoDB (e.g., aggregation pipelines, schema design)

Experience developing and documenting RESTful APIs for front-end consumption

Familiarity with authentication/authorization mechanisms (e.g., OAuth, JWT) and API security best practices

Testing and Tools: Experience testing backend systems with tools like Jest, Mocha, or Postman

Familiarity with version control (Git), CI/CD pipelines, and cloud platforms (e.g., AWS, Azure, or GCP)

Soft Skills: Strong problem-solving, attention to detail, and ability to articulate trade-offs (e.g., relational vs. NoSQL databases, REST vs. GraphQL)