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First Line Software Tech Stack

Custom software and managed AI services for healthcare and real estate

IT System Custom Software Development Cambridge, Massachusetts 201–500 employees Founded 2010 Privately Held

First Line Software is a 201–500-person engineering shop building custom software and managed AI services across healthcare, real estate, and data-heavy verticals. The stack is dominated by cloud (Azure, AWS) and data-scale tooling (Databricks, PySpark, Delta Lake), with strong backend foundations (NET Core, ASP.NET Core, Java). Hiring is exclusively senior-level across engineering, data, and security roles—a pattern that reflects their focus on complex, long-term client engagements rather than volume hiring.

Tech Stack 31 technologies

Core StackDatabricks PySpark Delta Lake Jenkins Azure DevOps PostgreSQL React PHP Angular AWS Docker Laravel Vue JavaScript Java Kubernetes C++ C# NET Core ASP.NET Core Azure Azure Pipelines Azure Application Insights Git Microsoft Office CakePHP Symfony InterSystems Caché SAST DAST

What First Line Software Is Building

◆Challenges

Optimizing big-data workloads
Technical debt
Building large-scale data pipelines
Stabilizing complex systems
Performance optimization
Debugging complex systems
Ensuring backend scalability
Streamlining ordering and production process
Complex api interactions
Modernizing legacy platform

▲Active Projects

Building and optimizing big-data workloads on databricks
Real estate property appraisal application
Automate and orchestrate workloads using jenkins
Stabilization of existing functionality
Stabilization of existing codebase
Multi tenant web application platform
Streamlining ordering and production process for printed products
Production optimization with finops
Backend services for growing user base
Securing applications and systems with a global telecommunications client

Hiring Activity

Steady9 roles · 3 in 30d

Department

Engineering

5

Data

2

Security

2

Seniority

Senior

9

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About First Line Software

First Line Software, headquartered in Cambridge, Massachusetts and founded in 2010, delivers custom software development and managed AI services to mid-market and enterprise clients. The company operates across healthcare IT, real estate technology, and adjacent data-rich industries, with particular expertise in big-data workloads, digital experience platforms, and enterprise system integration. Current project activity centers on Databricks-based data pipelines, real estate appraisal applications, multi-tenant web platforms, and backend scaling for growing user bases. The team is distributed across Czechia, Montenegro, Serbia, Bulgaria, Slovakia, and Spain, enabling 24/7 delivery and cost-efficient execution of long-term client partnerships.

HeadquartersCambridge, Massachusetts

Company Size201–500 employees

Founded2010

Hiring MarketsCzechia, Montenegro, Serbia, Bulgaria, Slovakia, Spain

Frequently Asked Questions

What is First Line Software's tech stack?

Primary: Databricks, PySpark, Delta Lake, Azure (DevOps, Pipelines, Application Insights), NET Core, ASP.NET Core, PostgreSQL, React, Angular. Also: Docker, Kubernetes, Jenkins, AWS, Java, C#, C++, Laravel, Symfony.

What industries does First Line Software serve?

Healthcare IT, real estate (property appraisal, valuations), and telecommunications. Active projects include big-data optimization, multi-tenant platforms, ordering automation, and backend scaling.