746 Senior Net Developer Toronto jobs in Canada

Lateral stands for technology excellence.

We’re a profitable, award-winning design and technology company with over 20 years of experience launching bold ventures and transforming businesses. A globally distributed team of 200+ experts united by a shared purpose: the continuous pursuit of quality.

Our clients come to us for results, quality and craft - and stay because we keep raising the bar.

Our mission is simple:design and build great products .
What sets us apart isn’t just the talent of our team -it’sthe way we work:

We Have A Bias For Action & Results.

We are doers - we spot the gaps, connect the dots, anticipate what’s around the corner and take action. We move fast, stay focused, and let the results -not the effort -speak for themselves.

We Work On Time, On Budget, On Quality

Discipline is our edge - a commitment we make to each other, to our clients, and to the standards we hold ourselves to.

We Care Deeply.

We care about our work and about each other. Care Is A Competitive Advantage.

Every detail matters. Every design, every line of code, every decision. Thoughtful by default.

We Do Things Right -Because It’s the Right Thing to Do

Right over easy. Integrity isn’t up for negotiation. We hold the bar high even when no one’s watching. We take pride in doing great work the right way -not the easy way.

We Keep Improving

The best teams keep improving and we’re never done learning.

We iterate. We reflect on what’s working and what’s not. Feedback fuels us, we receive it openly, and adapt quickly. Progress over perfection.

We’re Obsessed With Agility, Not The Agile Manifesto

We don’t chase dogma or rituals -we chase momentum. We adapt processes to fit problems, not the other way around.

We Take Ownership
Everyone leads something here. You will have room to run with ideas, and the trust to execute. That trust is built on how you show up: thinking things through, sweating the details, and following through.

As a Senior .NET Developer at Lateral, you will:

• Design and build scalable, resilient cloud applications onAzure using C#, .NET and SQL, delivering solutions that are secure, high-performance, adhere to our Coding Standards and “just work”.
  
  

• Write clean, clear, and well-tested code, embracing software craftsmanship principles to produce robust, reusable and maintainable systems. You will ensure a high bar for code quality through comprehensive unit tests and attention to detail.
  
  

• Take ownership of features end-to-end , from initial concept through deployment. You’ll often drive substantial product features as the key developer alongside an architect or product designer.
  
  

• Mentor and support junior engineers , leading by example in code reviews and pair programming. You will offer constructive feedback that helps others grow, fostering a thoughtful, kind, and continuously learning team culture.
  
  

• Provide technical leadership in architecture and design discussions, advocating for simple, elegant solutions. You’ll challenge unnecessary complexity and focus on pragmatic results.
  
  

• Continuously improve the codebase through refactoring and refinement, balancing new feature development with paying down technical debt. You’ll adopt an iterative approach of tweaking and constantly improving the software to keep the system simple, stable, and adaptable.
  
  

• Champion quality , reliability and scalability by implementing best practices in cloud operations (monitoring, security, CI/CD).

Example Projects You May Join:

• Build an AI-powered healthcare platform to help detect diseases earlier.

• Launch a new fintech product from the ground up.

• Scale a global SaaS commerce system with millions of products

Whatever the challenge, you’ll be building software that changes lives and moves industries forward.

How We Measure Success In This Role

In the first two weeks

• You make your first meaningful contribution to the project

• You communicate well async as well as in meetings

In the first 3 months:

• You understand the system architecture well and can work independently or in teams on medium-sized features.

• You design before you code (and produce design artifacts)

• You have shipped code in Production, clean, tested

• You communicate clearly, raising issues early and contributing to reviews.

• You deliver what you commit to.

After 3 months:

• You take ownership of larger features and improvements from start to finish.

• You help others by sharing knowledge, spotting problems early, and improving processes or tooling.

• You make decisions with both the codebase and business goals in mind.

We measure success through:

• Evaluating results (what you’ve shipped)

• Quality and reliability of your code.

• Consistency in delivery.

• Feedback from peers and leads.

• Your ability to work independently and unblock others.

We are seeking for team members who are both highly technical and deeply care about their craft and how the work gets done. You must bring:

• 7+ years experience in software development

• Deep expertise inC# and the.NET ecosystem, including: NET Core, ASP.NET Core and .NET 6 or later

• Strong proficiency withEntity Framework Core andMS SQL Server

• Solid understanding of Object-Oriented Programming(OOP), Service-Oriented Architecture (SOA), SOLID principles.

• Experience with to cloud-native anddistributed systems , ideally including: Azure Service Fabric, Azure Functions, Service Bus, Redis, Azure Storage, Application Insights

• Proven experience building robust, well-structuredAPIs

• Aquality mindset : unit tests, integration tests, automation, defensive programming

• Excellentproblem-solving and debugging skills with a hands-on,proactive attitude

• Ability toDesign before you code—express decisions through clear diagrams, validate assumptions early, and think through edge cases and trade-offs.

• Ability to quickly understand the nature of the business and clearly communicate with stakeholders (clients, colleagues)

• Strongwritten and verbal communication skills in English.

• A commitment tomaking a difference ,continuous learning , andcollaboration

Bonus points for:

• Experience with Large scale systems or datasets, Performance

• Graph Technologies

• Clarity in communication and design documentation.

Extra bonus points for:

• Experience building Infrastructure

• Real Impact: You’ll work on meaningful products that make a measurable difference - from healthcare and commerce to sustainability and next-gen tech.
  
  

• Remote-First, Office Friendly: Work from wherever you’re most productive - whether that’s your home, a co-working space, or one of our offices. We’re a remote-first company, but if you’re near an office, you’re welcome to drop in, collaborate in person, or work onsite regularly.
  
  We prioritize async collaboration, respect your time zone, and focus on outcomes over hours.
  
  

• An Outstanding Team: Talented, kind, and hard-working people who care deeply about their craft - and about each other. No egos. No politics. Just professionals doing their best work.
  
  

• Growth: You’ll be supported in growing your craft, exploring new paths, and stepping into greater responsibility -at your own pace
  
  

• A Culture of Excellence: We care deeply about doing the right thing -for our clients, our team, and ourselves. No burnout. No crunch. Just high-quality work, delivered sustainably.
  
  

• Variety & Stability: We’re profitable, independent, and over a decade strong. Yet every project brings a fresh challenge. You’ll never be bored here.

We want to respect your time by being clear about what this role isn’t. You should skip this opportunity if:

• You prefer well defined structure. If you gravitate towards a clear hierarchy, well defined roles and swim lanes, you may find our self-managed style challenging.
  
  

• Distributed work isn’t your thing. If you find async communication, design documentation and being proactive without a manager nearby difficult, our setup won’t suit you.
  
  

• Feedback doesn't excite you. We’re obsessed with quality and believe in continuous improvement. That means we give feedback that’s sometimes nitpicky. If refining the work until it’s excellent feels over the top, you are likely going to find working here frustrating.
  
  

• Change makes you uncomfortable. We’re scaling and maturing. That means not everything is perfect yet. Priorities shift. Processes evolve. If ambiguity is uncomfortable, this may feel bumpy.
  
  

However, If this sounds like fuel, we’d love to talk!

Our hiring process is structured as a sequence of steps. Moving forward is based on how well the previous step goes. This helps us stay focused, fair, and respectful of everyone’s time.

We will always:

• Let you know clearly what the next step is

• Share updates and feedback wherever possible

• Invite questions if anything feels unclear

Not everyone progresses through every stage. That doesn’t mean you’re not great at what you do. Sometimes it’s about timing, team fit, or simply what we’re looking for at the moment.

If this sounds like your kind of team and you’re ready to bring your craft to Lateral, we want to hear from you.

Please send us:

• Yourresume

• Ashort note about what excites you about this role

• Links to your work : GitHub/ Code snippets, portfolio, architecture /design docs, blog posts, oranything that shows us how you think and build
  
  Please don’t include anything sensitive or proprietary.
  If you’re sharing team projects, let us know what your specific contributions were.

We review every application with care. If there’s a fit, we’ll reach out to schedule next steps.

Purpose: A structured discussion with our People Experience team to delve into your career trajectory, motivations, and alignment with Lateral's values.

What to Expect:

• In-depth questions about your past experiences and decision-making processes.

• Exploration of your career goals and how they align with the role.

• Discussion about our company culture, availability, compensation and other logistics

• Motivators and demotivators.

• Your life outside coding.

Preparation Tips:

• Reflect on your career journey and pivotal moments.

• Be ready to discuss challenges you've overcome and lessons learned.

• Familiarize yourself with the Job Description, Lateral's mission and values.

Purpose: Provide a practical demonstration of your skills through a task resembling real work at Lateral.

Format: A take-home assignment or a live session, depending on the role.

What to Expect:

• Tasks designed to reflect actual challenges faced in the position.

• An opportunity to showcase your problem-solving and technical skills.

Preparation Tips:

• Set aside uninterrupted time to focus.

• Explain your decisions and assumptions.

Purpose: Assess your technical proficiency and problem-solving abilities.
Format: A collaborative session with our engineering team, focusing on real-world scenarios relevant to the role.

What to Expect:

• Problem-solving exercises/questions that mirror tasks you'd encounter in the position.

• Discussions around your approach, reasoning, and solutions.

Preparation Tips:

• Practice articulating your thought process clearly and concisely.

• Be prepared to discuss in depth past projects and the technologies used.

Purpose: Understand your approach to prioritizing, collaborating, shipping, and iterating.

What to expect:

• How you prioritize and break down work.

• How you collaborate across disciplines.

• How you handle blockers, feedback, and iteration.

Preparation Tips:

• Pick 1-2 meaningful projects you led or heavily contributed to.

• Walk through your process: what worked, what didn’t, what you’d do differently.

• Think about how you manage time, scope, and changing requirements.

Purpose: We believe references are about understanding, not just validation. We do not look for perfection, but to understand patterns, strengths, and context. We use them to learn how to support you best.

What to Expect: we’ll ask you for 2–3 people who’ve worked closely with you. These are often: former managers, senior peers or collaborators, mentors or people you've mentored.

What we ask: We focus on how you’ve grown, where you shine, how you like to be led, and what support sets you up for success. We want practical advice for making this a great fit for you.

Yes, we do backchannels too: We do thiswhen we feel we need more context . We will check with you if there are folks we should avoid reaching out due to confidentiality or other reasons. Andhere’s our commitment: if anything surprising or unclear comes up in a backchannel, we’ll bring it directly to you. We believe in “no stories without you in the room .” You’ll always get the chance to share your side, context, or clarification.

What Happens: If selected, you'll receive a comprehensive offer detailing compensation, and other pertinent information.

Our hiring process is designed to be thorough yet respectful, ensuring a mutual fit. We encourage candidates to engage actively, ask questions, and view this as a two-way exploration.

Join us and let’s build something extraordinary.