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Sr. Data Engineer

JOB SUMMARY

United StatesPosted on 2/27/2026

Skills & Technologies

Languages:PythonSQL
Cloud/DevOps:AWS
Databases:PostgreSQLMySQL
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Job details

NinjaHoldings was founded in 2017 by a team seeking to revolutionize the way everyday Americans interact with financial services. Through our CreditNinja and NinjaCard brands, we empower people overlooked by traditional financial institutions to take control of their finances via a full suite of digital banking and lending products, providing incentives and rewards along the way as we guide them on a path to financial improvement. Through our NinjaEdge brand, we help companies better understand their customers by offering a package of bespoke underwriting, fraud detection, and analytics services. With offices in Chicago, Miami, and around the world through the power of remote work, we are a lean and innovative team always seeking like-minded talent to join us in our fight to disrupt consumer finance. Job SummaryWe are looking for a Senior Data Engineer to join a team of analytics and machine learning experts.

The hire will be responsible for building tooling to support analytics, helping to extend our machine learning platform, expanding and optimizing our data pipeline architecture, supervising junior engineers, and interfacing with the Development team to create cross-team solutions.

The ideal candidate is an experienced data engineer and data wrangler who enjoys optimizing data systems and building them from the ground up.

They must be self-directed and comfortable supporting the data needs of multiple teams, systems, and products. Experience in analytics and statistics is a major bonus.

The right candidate will be excited by the prospect of optimizing or even re-designing, our company’s data architecture to support our next generation of products and data initiatives; as well as mentoring and guiding junior members of the team. Key Responsibilities:Supervise junior members of the data engineering team. Guiding, planning, and reviewing the team's workCreate and maintain optimal data pipeline architectureAssemble large, complex data sets that meet functional / non-functional business

requirements

Extend our machine learning platform by designing tools that interface with cloud services, our current code base, and provide new flexibility in model buildingBuild the infrastructure required for optimal extraction, transformation, and loading of data from a wide variety of data sources using SQL, Python, and AWSBuild analytics tools to provide actionable insights into key business performance metrics, as well as supporting the needs of the analytics teamCreate data-handling tools for analytics and data scientist team members that assist them in building and optimizing our decision-making processIdeal Candidate Will Have:5+ years of experience in a Data Engineer roleBachelors degree in Computer Science, Statistics, Informatics, Information Systems or another quantitative fieldAdvanced working SQL knowledge and experience working with relational databases (including Postgres and MySQL), query authoring (SQL), as well as working familiarity with a variety of databasesExperience building data pipelines, architectures, and data sets from raw, loosely structured dataA history of focusing on test driven design and results for repeatable and maintainable processes and toolsExperience building processes supporting data transformation, data structures, metadata, dependency, and workload managementWorking knowledge of message queuing, stream processing, and highly scalable data storesStrong project management and organizational skills and the ability to work independently in a fast-paced, quickly changing environment. Ability to keep up with several projects at once and understand the impact of projects within a larger systemExperience supporting and working with cross-functional teams in a dynamic environmentExperience managing junior engineers and guiding a team of engineers through project planning, execution, and quality control stagesCandidate should have experience using the following software/tools: Experience with object-oriented design in PythonExperience with data pipeline and workflow management toolsExperience with AWS cloud services: EC2, RDS, Redshift, Glue, S3Additional Pluses:Strong analytic skills and understanding statistical methodologiesExperience building machine learning modelsExperience handling data from acquisition to usage in modelsExperience building and maintaining RestAPI systems, Flask apps, and state machinesExperience with continuous integration, especially in a data science contextExperience with Ruby on Rails



Benefits



:Competitive salary and

benefits

packageFlexible, remote workFun, fast-paced work environmentDynamic start-up cultureConvenient downtown Chicago office located in the heart of the cityEqual opportunity employerIMPORTANT NOTICE:Please carefully review communications to ensure that they are from the official Breezy applicant tracking platform (@ninjaholdings. breezy-mail. com) or an official NinjaHoldings brand email: @ninjaholdings. com, @creditninja. com, @ninjacard. com, or @edgescore. com.

If you have been contacted regarding a job opening at NinjaHoldings from any other email address, including similar email variations, this is NOT a trusted source.

We recommend that you refrain from responding to suspicious emails and file a complaint with the FBI's Internet Crime Complaint Center (IC3) at https://www. ic

3. gov. For questions or to confirm the authenticity of a communication, please email hr @ninjaholdings. com. Salary: $125k - $165k.