Blackfynn | Senior Back-End Engineer -

Senior Back-End Engineer

Blackfynn |  Philadelphia, PA | Dev / Eng

Job Description
Perks + Benefits
Company Culture Coverage

Blackfynn is looking for an experienced Senior Back-End Engineer to join our growing engineering team. We’re looking for someone that enjoys working in a diverse development environment and loves tackling tough engineering problems.


Our Engineering team designs, builds, scales and optimizes the infrastructure and services powering Blackfynn’s data platform, which is leveraged by our end users and internal data science team.

We’re a team with diverse backgrounds that value working on products that make a meaningful difference. We appreciate healthy debate, curiosity, transparency, and getting things done. Above all else, we’re looking for people who are mission driven and wish to use their talents to make meaningful impacts on people’s lives.


Our code is well tested, thoughtfully designed, and well-structured. We view software development as a craft. We care deeply about user experience in a field where it is often lacking. We’re not language or library zealots nor are we afraid of a diverse toolset; we use the right tool for each job.

Today, our engineering team makes use of:

  • Languages: JavaScript, CSS/SCSS, HTML; Scala and Python APIs; Rust CLI; clients for Python and Matlab
  • Frameworks: Vue, Vuex, Ramda, Scalatra, Akka
  • Visualization: D3, Vega, canvas
  • Infrastructure: AWS and Terraform
  • Datastores: Postgres, Neo4J, and DynamoDB

Although experience with our existing stack is great, we’re MOST interested in engineers who are able to take the complex tasks our users perform and distill them down to intuitive experiences.


To be successful as a Back-End Engineer at Blackfynn, we expect that:

  • You consider yourself a polyglot who happens to have deep knowledge in an area or two.
  • You value asynchrony, immutability, and static types.
  • You have experience working with data of varying shapes and sizes.
  • You treat infrastructure as code.
  • You constantly consider data security and privacy.
  • You’re mindful of performance and trade-offs in your work.
  • You’re data driven and measure results to help guide our efforts.
  • You constantly seek out opportunities to automate processes and tasks.
  • You’re eager to review peer code and have your code reviewed.
  • You’re team focused and care about engineering culture.


  • Competitive salaries and equity participation – we all share in Blackfynn’s success
  • Generous vacation benefits – we want you to work hard but also rest and recharge
  • Excellent health benefits – at the end of the day, we are here to improve healthcare
  • Opportunity to work with smart people, solve complex problems, and make an impact in the world

Neurologic conditions affect one in six people worldwide. The data collected when research and treating these conditions is some of the most complex in the field today. To improve the lives of those impacted, access to and collaboration around this data needs to be vastly improved. To achieve these goals, we need passionate, bright, collaborative, problem-solvers who want to use their skills and talents to make a positive impact on the world.

For more information, please contact us at: 

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Health & Wellness Benefits
  • Dental
  • Disability Insurance
  • Health Insurance
  • Life Insurance
  • Vision
  • Wellness Programs
  • Remote Work
  • Work from Home
Parental Benefits
  • Family Medical Leave
  • Flexible Work Schedule
  • Generous Parental Leave
  • Mother Rooms
Perks & Discounts
  • Casual Dress
  • Company Outings
  • Lunch
  • Snacks
Professional Development
  • Tuition Reimbursement
Retirement & Stock Options Benefits
  • 401K
  • Company Equity
Vacation & Time Off Benefits
  • Generous PTO
  • Paid Holidays
  • Paid Sick Days

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