Background Texture

IT Services · Applications

Software Built
for Your
Business.

Custom web, mobile and desktop applications, APIs and SaaS products — cloud-native, AI-assisted and delivered by blended onshore, nearshore and offshore teams.

Code on a screen
Overview

Custom Software Development

We design, build and evolve custom web, mobile and desktop applications, APIs and SaaS products using modern cloud-native engineering, AI-assisted development and automated quality — delivered by blended onshore, nearshore and offshore teams.

Industries: All industries; ISVs and SaaS companies

Offering details

Inside Every Offering

Activities and deliverables, business outcomes, technologies and how each engagement is bought.

01 / 08

CSD-01

Web Application Development

Build secure, responsive, scalable web applications and portals using modern frameworks.

Outcomes

Fast, reliable web experiences; maintainable codebase.

Agile T&MFixed-scope
Discuss this offering

Activities & deliverables

  1. 01Discovery & UX
  2. 02Architecture
  3. 03Front-end & back-end development
  4. 04Automated testing
  5. 05Deployment

Technologies & platforms

ReactAngularVueNext.jsNode.js.NETJava/SpringPython/Django
CSD-02

Mobile App Development

Design and build native and cross-platform mobile apps for iOS and Android.

Outcomes

Engaged mobile users, field productivity, new digital channels.

Agile T&MFixed-scope
Discuss this offering

Activities & deliverables

  1. 01Mobile UX
  2. 02Native/cross-platform builds
  3. 03Offline sync
  4. 04App store release
  5. 05Analytics

Technologies & platforms

SwiftKotlinReact NativeFlutter.NET MAUIFirebaseAWS Amplify
CSD-03

Desktop & Enterprise Applications

Build and modernize desktop and line-of-business applications for performance, security and usability.

Outcomes

Reliable business-critical tools; modernized legacy apps.

Activities & deliverables

  1. 01Requirements
  2. 02Architecture
  3. 03Development
  4. 04Packaging & deployment
  5. 05Modernization of legacy desktop apps

Technologies & platforms

.NET (WPF, WinUI)JavaElectronQt
CSD-04

API, Microservices & Backend Engineering

Engineer scalable APIs and backend services that power apps, partners and AI agents.

Outcomes

Reusable services, faster integration, scalability.

Activities & deliverables

  1. 01API design
  2. 02Microservices
  3. 03Data layer
  4. 04Security (OAuth/OIDC)
  5. 05Performance testing

Technologies & platforms

RESTGraphQLgRPCJava.NETNode.jsGoPythonPostgreSQLMongoDBRedis
CSD-05

SaaS Product Engineering

Build and scale multi-tenant SaaS products for ISVs and enterprises launching digital products.

Outcomes

Faster time-to-market, scalable product platform.

Dedicated product pods
Discuss this offering

Activities & deliverables

  1. 01Product discovery
  2. 02Multi-tenant architecture
  3. 03Billing & identity
  4. 04CI/CD
  5. 05Product support

Technologies & platforms

AWSAzureGCPStripeAuth0/OktaKubernetesserverless
CSD-06

AI-Native Application Development

Embed LLMs, agents and predictive models directly into new and existing applications.

Outcomes

Differentiated, intelligent products; new user experiences.

Activities & deliverables

  1. 01AI feature design
  2. 02Model integration
  3. 03Evaluation
  4. 04Guardrails
  5. 05Usage & cost monitoring

Technologies & platforms

OpenAIAnthropicGemini APIsBedrockAzure AI FoundryVertex AIvector databases (pgvector, Pinecone)
CSD-07

Application Development & Management (AMS)

Enhance, maintain and support mission-critical custom applications throughout their lifecycle.

Outcomes

Reliable, current applications; predictable cost.

Managed serviceCapacity-based
Discuss this offering

Activities & deliverables

  1. 01Enhancements
  2. 02Defect fixes
  3. 03Technical-debt reduction
  4. 04Release management
  5. 05Documentation

Technologies & platforms

Technology-agnostic
CSD-08

IoT & Edge Applications

Connect devices and sensors to cloud analytics for monitoring, automation and predictive maintenance.

Outcomes

Real-time operational visibility, reduced downtime.

Activities & deliverables

  1. 01Device integration
  2. 02Edge processing
  3. 03IoT data pipelines
  4. 04Dashboards

Technologies & platforms

AWS IoTAzure IoTMQTTKafkatime-series databases
Technology & platforms

No Cloud or Technology Barrier

Certified architects across all four major clouds and the leading independent platforms — recommendations follow your requirements, not partner incentives.

Showing AWS + independent platforms

01AWS

Compute, containers & serverless

EC2EKSECSLambda

Any cloud: Kubernetes · OpenShift · Docker · Nutanix

02AWS

Relational databases

RDSAurora

Any cloud: PostgreSQL · MySQL · SQL Server · MongoDB

03AWS

Generative AI & agents

BedrockAgentCoreAmazon Q

Any cloud: OpenAI · Anthropic · Meta Llama · Mistral · Snowflake Cortex · Databricks Mosaic AI · LangGraph · MCP

04AWS

DevOps & observability

CodePipelineCloudWatch

Any cloud: GitHub · GitLab · Jenkins · Argo CD · Datadog · Dynatrace · Grafana

Vendor-neutral by design

Technology Without Boundaries.

FixityTech is a vendor-neutral, full-stack IT services partner that helps organizations modernize, secure and run their technology — from cloud and data to AI, applications and managed operations — on the platforms that fit their business, not ours.

We hold partnerships across major platforms but no single-vendor allegiance. Every recommendation is based on your requirements, total cost of ownership and existing investments.

Delivered from Chicago, USA, San Francisco, USA, Querétaro, Mexico (nearshore), Hyderabad, India (offshore) — onsite, nearshore, offshore and blended teams; follow-the-sun support.

8
Custom Software Development offerings
12
Service lines
4
Major clouds
3
Delivery countries
How we engage

Discover. Roadmap. Deliver. Run & Improve.

  1. 01

    Discover

    Rapid assessment of current platforms, data and priorities — 2–3 weeks.

  2. 02

    Roadmap

    Joint modernization roadmap, architecture and business case aligned to client goals.

  3. 03

    Deliver

    Pilot kickoff, then phased delivery with embedded governance.

  4. 04

    Run & Improve

    Managed services with SLAs and continuous optimization — closes the lifecycle loop.

Engagement models

Buy the Way That Fits

How Custom Software Development engagements are bought.

  1. 01

    Pilot / Proof of Value

    Fixed-scope 4–8 week pilot proving value on real data before scaling.

    Best for

    GenAI, agentic AI, conversational analytics, RPA

    Pricing

    Fixed fee

  2. 02

    Fixed-Scope Project

    Defined scope, deliverables and timeline.

    Best for

    Implementations, migrations waves, app builds

    Pricing

    Fixed price / milestones

  3. 03

    Agile Delivery (T&M)

    Flexible sprint-based delivery where scope evolves.

    Best for

    Product engineering, complex modernization

    Pricing

    Time & materials / capped T&M

  4. 04

    Managed Services

    Ongoing run & improve under SLAs, tiered by coverage.

    Best for

    Apps, cloud, data, AI, security operations

    Pricing

    Monthly subscription / SLA tier

  5. 05

    Dedicated Delivery Pods

    Self-managed cross-functional teams (onshore, nearshore Mexico, offshore India).

    Best for

    Long-running programs, capacity scaling

    Pricing

    Monthly per pod

Industries

Industries We Serve

All industries; ISVs and SaaS companies.

Focus

ISVs & SaaS Companies

Product engineering, cloud and data teams for software vendors scaling their platforms.

Healthcare & Life Sciences

Modernization, data and security for providers, payers and life-sciences organizations.

Public Sector

Federal, state and local agencies modernizing legacy systems and citizen services.

Higher Education

Student, research and administrative platforms built to be accessible and secure.

Financial Services & Insurance

Trusted data, AI and applications for regulated financial institutions.

Hospitality, Gaming & Entertainment

Guest experience, loyalty and always-on platforms for hotels, resorts and gaming.

Manufacturing & Supply Chain

Connected operations, ERP and supply-chain visibility from plant floor to warehouse.

Retail & Consumer Goods

Unified commerce, customer data and demand forecasting for retailers and brands.

Energy & Utilities

Grid, asset and customer platforms for utilities and energy providers.

City skyline
Next step

Talk to our product engineering team: from discovery to support, we design, build and evolve software around your business.