Mississauga, On Sr. software developer Jobs – 872 Openings This Week

Senior Software Engineer
Tactable —Toronto, ON
- $140,000–$190,000 a year
- Full-time
- Hybrid work
- Azure
- English
- Java
- Disability insurance
- Dental care
Quick apply
Senior Software Engineer
LTM —Mississauga, ON
- $77,874–$86,767 a year
- DevOps
- Java
- Analysis skills
- Disability insurance
- Dental care
Quick apply
Senior Salesforce Developer
The Minto Group —Toronto, ON
- $120,000–$150,000 a year
- Full-time
- Azure
- Sales
- Salesforce
- Paid time off
Quick apply
Senior Software Engineer, C++
SS&C Technologies —Toronto, ON
- $110,000–$135,000 a year
- Full-time
- Hybrid work
- Computer Science
- SQL
- C++
- Dental care
- Paid time off
Senior Salesforce Software Developer
Moneris Solutions —Toronto, ON
- $100,000–$142,000 a year
- Full-time
- Hybrid work
- Sales
- Salesforce
- DevOps
- Profit sharing
- Paid time off
Senior Backend Engineer
Movable Ink —Toronto, ON
- $140,000–$180,000 a year
- Azure
- Schematics
- AWS
Quick apply
Senior Software Engineer, Progress ABL
SS&C Technologies —Toronto, ON
- $110,000–$135,000 a year
- Full-time
- Hybrid work
- DevOps
- SharePoint
- APIs
- Dental care
- Paid time off
Sr. Electronics Developer
Electrovaya —Mississauga, ON
- $100,000–$110,000 a year
- Full-time
- CAD
- Engineering
- Master's degree
Quick apply
Software Developer III
Moneris Solutions —Toronto, ON
- $85,000–$119,000 a year
- Full-time
- Hybrid work
- Azure
- Computer Science
- Engineering
- Profit sharing
- Paid time off
Senior Software Developer
Aiolos Engineering Corporation —Etobicoke, ON
- $113,409 a year
- Full-time
- Hybrid work
- AutoCAD
- English
- Microsoft Office
- Dental care
- Life insurance
Quick apply
Senior Cloud Engineer
BMO Financial Group —Ontario
- $75,900–$141,900 a year
- Full-time
- Remote
- DevOps
- AWS
- Analysis skills
- Tuition reimbursement
- Life insurance
Senior Software Developer
Moneris Solutions —Toronto, ON
- $100,000–$142,000 a year
- Full-time
- Hybrid work
- Software development
- APIs
- Agile
- Profit sharing
- Paid time off
Senior Cloud Engineer AI
BMO Financial Group —Toronto, ON
- $75,900–$141,900 a year
- Azure
- Databases
- AWS
- Tuition reimbursement
- Life insurance
Senior Full-Stack Developer
Teranet —Toronto, ON
- $120,000–$143,000 a year
- Full-time
- Azure
- Oracle
- Computer Science
- Employee assistance program
5h
Senior Full Stack Developer (1871)
Direct IT Recruiting Inc. —Toronto, ON
- $90–$100 an hour
- 8 hour shift
- Hybrid work
- Azure
- DevOps
- SQL
Quick apply
1d
Senior Cloud Engineer AI
BMO Financial Group —Toronto, ON
- $75,900–$141,900 a year
- Full-time
- Azure
- Databases
- AWS
- Tuition reimbursement
- Life insurance
Sr Python Developer
ISG Search Inc —Toronto, ON
- Contract
- SQL
- C++
- APIs
Quick apply
7d
Senior Staff Software Engineer - iOS
Capital One - CA —Toronto, ON
- Full-time
- Hybrid work
- Computer Science
- Engineering
- Master's degree
Senior Staff Software Engineer
Capital One - CA —Toronto, ON
- Full-time
- Hybrid work
- Azure
- Computer Science
- Engineering
9d
Senior Staff Software Engineer
Capital One - CA —Toronto, ON
- Full-time
- Hybrid work
- Azure
- Computer Science
- Engineering
9d

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sr. software developer jobs near mississauga, on

Senior Software Engineer

Tactable
Toronto, ON

Quick apply

Job details

Full-time
$140,000–$190,000 a year

Qualifications

CI/CD
Azure
Law
React
Full-stack development
Big data
Spark
English
Java
SQL
AWS
Bachelor's
Software development
APIs
Apache
Kafka
AI
Python
Spring framework
Hadoop

Full job description

Our Mission at Tactable

What if you could build software that didn’t just scale, but transformed entire organizations?

At Tactable, this is what drives us. We’re building a world-class cloud, data, and API engineering firm with a mission to power the most influential tech of tomorrow, through expert-led delivery, strong partnerships, and a relentless focus on quality.

We don’t just consult. We build.

Founded by engineers who care deeply about people, process, and product, we go beyond just solving problems. We embed with clients, work across full project lifecycles, and operate at the speed of startups while upholding the rigor of enterprise-grade engineering.

From financial institutions to emerging tech ventures, our work is behind some of the most mission-critical systems in production today, and we’re just getting started. With growing demand from top-tier clients and a strong runway for expansion, we’re building a team of curious, ambitious developers who want to build meaningful things with meaningful people.

Take a look at to learn more about our work and what sets us apart.

The Role: Senior Software Engineer (Cloud, Data & APIs)

This is a hands-on, hybrid role designed for builders. As a Software Engineer, you’ll be part of a deeply technical team solving real-world data and infrastructure challenges for our enterprise clients, from scaling streaming pipelines and integrating APIs to designing high-availability cloud systems.

You’ll have the opportunity to lead technical direction, mentor teammates, and rotate across domains that expose you to new tech, use cases, and industries. We're not just hiring you for a project. We’re investing in your long-term growth.

If you love writing clean code, collaborating cross-functionally, and designing systems that make a real impact, you’ll thrive at Tactable.

What You’ll Do

End-to-End Engineering

Build scalable, high-performance backend systems using Java, leveraging concurrent and distributed architectures
Design and implement robust, distributed data pipelines using Spark, Databricks, Kafka, and Apache Iceberg
Develop and maintain microservices that interact with both streaming and batch data sources
Integrate complex data systems using ETL/ELT processes, Spring Expressions, and custom APIs
Optimize and manage datasets using Parquet, Hadoop, and modern query layers like Dremio
Collaborate with frontend teams to support integration of React-based user interfaces with backend APIs
Modernize and migrate legacy systems to cloud-native infrastructure

Technical Leadership

Guide architectural decisions involving data workflows, storage formats, and service patterns
Break down complex, cross-cutting tasks into structured delivery plans
Mentor junior and mid-level engineers on data engineering best practices, from streaming to transformation layers
Review and document architecture choices and technical designs for transparency and alignment

Client & Project Exposure

Rotate across engagements (every 6–12 months) involving large-scale data and infrastructure challenges, often in banking, financial services, and regulated environments
Lead technical execution across greenfield builds, real-time analytics platforms, and high-throughput systems
Act as a hands-on engineering partner to client teams, building long-term technical trust and delivering meaningful impact

What You Bring

Must-Have Experience

8+ years of extensive software/data engineering experience in production environments
Advanced expertise in Java or Python, including performance optimization, concurrency, and service-oriented architecture
Deep experience building scalable data pipelines with tools like Spark, Kafka, Databricks, and Iceberg
Strong working knowledge of RDBMS and SQL, plus hands-on experience with Parquet and big data file formats
Familiarity with Hadoop-based ecosystems, large-scale data processing, and modern orchestration practices
Hands-on experience with cloud platforms like AWS or Azure
Experience integrating backend services with React-based frontends (bonus if full-stack)
Solid understanding of CI/CD workflows, API design, and cloud infrastructure fundamentals

Bonus Points For

Exposure to LLM/AI-based data transformation tools
Prior experience with Java and Python in mixed-language environments
Experience with Dremio or similar data lake query engines
Experience working in highly regulated industries, especially finance or insurance
Ability to operate in hybrid/in-person environments and lead small technical teams

Why You’ll Love This Role

Growth-First Culture - From custom career paths to project rotation, we design roles around your goals, not just business needs.
Full Ownership & Impact - You’ll own critical parts of delivery, architecture, and technical decision-making. No red tape, no silos.
Tight-Knit Team - We’ve built a culture of trust, collaboration, and curiosity. Whether it’s team lunches, hack days, or a new internal tool, we move as one unit.
Real Work, Real Users - We’re not building MVPs that sit on a shelf. You’ll work on systems that millions rely on, every day.
Flexibility with Structure - We’re a hybrid-first team with a strong appreciation for in-office collaboration, especially at our downtown Toronto HQ. We encourage in-person presence to foster mentorship, connection, and collaboration.

Why This Might Not Be a Fit

If you’re looking for narrow responsibilities or prefer to stay in one tech domain long-term
If you want to work in a rigid hierarchy with formal titles and clear ladders
If you prefer a vendor-style relationship with clients rather than deep, embedded partnerships

Compensation, Benefits & Perks

Salary Range: $140,000 – $190,000 CAD, based on experience and role fit
Comprehensive health and dental plan
Generous PTO and holidays
Laptop & home office equipment provided
Career coaching and personalized development plans
Regular social events, team outings, and wellness activities

Hiring Process & Transparency

This role is for an active vacancy on our engineering team, not a future talent pool position.
As part of our hiring process, we use AI-assisted screening tools. Candidates selected to move forward will complete an initial screening interview via an AI-based platform, followed by direct interviews with our engineering team.

Ready to Build the Next Generation of Cloud & Data Infrastructure?

No cover letter required. Just apply, and let’s start building.

Job Type: Full-time

Pay: $140,000.00-$190,000.00 per year

Benefits:

Dental care
Disability insurance
Extended health care
Life insurance
Paid time off

Education:

Bachelor's Degree (preferred)

Experience:

Software development: 8 years (required)

Language:

English (required)

Location:

Toronto, ON M5A 1E1 (required)

Work Location: Hybrid remote in Toronto, ON M5A 1E1

Quick apply

Refine Your Search

sr. software developer jobs in mississauga, on

Senior Software Engineer

Senior Software Engineer

Senior Salesforce Developer

Senior Software Engineer, C++

Senior Salesforce Software Developer

Senior Backend Engineer

Senior Software Engineer, Progress ABL

Sr. Electronics Developer

Software Developer III

Senior Software Developer

Senior Cloud Engineer

Senior Software Developer

Senior Cloud Engineer AI

Senior Full-Stack Developer

Senior Full Stack Developer (1871)

Senior Cloud Engineer AI

Sr Python Developer

Senior Staff Software Engineer - iOS

Senior Staff Software Engineer

Senior Staff Software Engineer

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