Climate work that pays for itself
Our clients save money from day one, so decarbonisation here doesn't depend on grants or goodwill. It scales because it's profitable.
Vision: 29 million tonnes of CO₂ reduced by 2030
Turn your talent into climate impact.
Cooling uses up to 60% of a large building's energy. We're the engineers, operators, coders and dealmakers who cut that waste in hospitals, hotels and factories, and we measure the result in tonnes of CO₂.
200+people
28cities in India
4countries: India, Indonesia, UAE, USA
Since 2014founder-led
Every job here shows up in tonnes, kWh and rupees.
A site engineer tuning a chiller in Chennai and a developer shipping a DeJoule release in Delhi move the same three numbers.
2.7 lakh tCO₂ removed
37 cr kWhelectricity conserved
₹309 crvalue created for clients
What 2.7 lakh tonnes of CO₂ looks like
≈ 59,000cars taken off the road for a year
≈ 1.2 croretrees growing for a full year
≈ 3.1 lakhIndian homes powered for a year by the energy we saved
On the way to our 2030 vision29 million t CO₂
02.5 lakh t5 lakh t7.5 lakh t10 lakh t
Zoomed in: our first 1 million tonnes27% there
Six reasons people build their careers here.
See the whole system, not one slice
Few companies design, build, finance, run and automate cooling plants. You'll learn every stage, and you can move between them.
Design→Build→Finance→Operate→Automate
Build AI that runs real buildings
DeJoule uses edge reinforcement learning to run chiller plants in live hospitals. Your code changes kW/TR on a real dashboard, not just a slide.
DeJoule Edge AI patent granted, 2026
Leaders you'll actually meet
Our founders still walk plant rooms. Employees regularly mention easy access to leadership as one of the best things about working here.
Glassdoor 4.1★ · 77% would recommend
Grow as fast as we do
We went from 100 people in 2020 to 200+ today, and from Delhi to Indonesia, the UAE and New York. New sites and markets mean new leads and managers.
100 → 200+ people · 15 → 28 cities
Backed for the long run
Climate investors and banks back us, including SBI Ventures, ADB Ventures, Denmark's IFU, Tata Capital and SIDBI. That means a startup pace with a solid footing.
USD 10M raised in 2025
Where we started
Three buildings in one Delhi neighbourhood. A team on site every day, checking every kilowatt by hand.
When a fourth project took us across the city, the savings began to slip. We learned that efficiency at scale needs automated intelligence, and that the systems on the market weren't good enough.
So we built our own. That habit of fixing what's broken, instead of accepting it, is still how we work.
A decade of Smart Joules
A decade of milestones, breakthrough models, and measurable impact.
20142026
2014FOUNDATION
Founded to make energy efficiency simple, substantial and profitable.
2015BUSINESS MODEL
Launched JoulePays, a pioneering Pay-As-You-Save model.
2016TECHNOLOGY
Recognised by Ministry of Power and CII; launched DeJoule AI + IoT BMS.
2017RECOGNITION
Each of our hospital clients won a National Award for Energy Conservation.
2018GLOBAL HONORS
Won an international award from the German Energy Ministry / dena.
2019EXPANSION
Recognised by BASE for pioneering Cooling-as-a-Service in India.
2020GROWTH
Grew to a 100-member team across 15 cities with 22 projects executed.
2021INVESTMENT
Raised USD 5M Series A led by ADB Ventures.
2022ENTERPRISE
India's first corporate-wide savings deal with Apollo; first JouleCool with KIMS.
2023HOSPITALITY
Entered luxury hospitality with Le Meridien, Gurgaon.
2024GLOBAL REACH
USD 8M debt from Denmark's IFU; 200-member team; first DeJoule in Indonesia.
2025SCALE
Raised USD 10 Million investment from strategic investors to scale decarbonization.
2026PATENT & EXPANSION
DeJoule Edge AI granted a patent; expansion to New York and UAE; three clients win top cooling awards.
How a few engineers took on India's biggest energy drain.
Our story, told as a comic: the early days, the setbacks, and the people who turned three buildings into a climate company.
- 2015 · Delhi
Three buildings. One neighbourhood. A team on site every single day.
Every kilowatt checked by hand.
- Then…
A fourth project across the city, and the savings started to slip.
So we built our own brain for buildings: DeJoule.
We don't just think green. We GO GREEN.
Seven values we hire for, review on and promote by. Pick a letter.
01 / 07
Get shit done
- Actions, decisions and impact matter. Nothing else does.
- Put action before obstacles. Focus on the solution, not the problem.
- Push past your constraints and deliver results.
Hear it from the people who do the work.
Working at Smart Joules gives me the opportunity to solve interesting engineering challenges, build practical solutions, and make a real impact. I enjoy the sense of ownership, the collaborative team, and seeing our work translate into better building performance and energy efficiency.
Praveen KumarEngineering Manager
Working at Smart Joules is a journey of learning, ownership, and solving real-world problems. I enjoy collaborating with talented teams, turning ideas into impactful solutions, and seeing our work drive measurable energy savings.
Samhitha ThalluruProduct Manager
At Smart Joules, I work on HVAC project costing and estimation, finding ways to optimise costs without compromising quality or performance. It’s rewarding to contribute to projects that make commercial sense while helping clients save energy and reduce operating costs.
Amit KumarCosting & Estimation Manager
Somewhere in India tonight, a hospital stays cool because one of us made it run on less. That’s the work here: everyday decisions that add up to millions of tonnes. Bring your curiosity and your grit. We’ll give you hard problems, the trust to own them, and a team that has your back.
Ameya AyachitChief People Officer
The leadership team
Sidhartha P Gupta, Co-Founder & CFO
Plant rooms by day. Cricket pitches by evening.
Recognised for our work.
National and international honors validating our climate tech innovation and energy efficiency leadership.
AI FOR ENERGY
Energy Tech Summit Asia 2026
Selected as an Energy Tech Challenger and finalist across two challenge tracks, Smart Joules showcased DeJoule and its approach to AI-powered building optimisation at Energy Tech Summit Asia in Malaysia.
BUILDING INTELLIGENCE & RETROFIT
Taking Efficiency First to New York
As part of The Clean Fight cohort, we explored how AI-powered building optimisation can help New York tackle its decarbonisation challenge, starting with the infrastructure buildings already have.
BUSINESS LEADERSHIP
CNBC India Business Leader Award 2026
Smart Joules won the prestigious CNBC India Business Leader Award in Mumbai, presented by KM Birla and Preetha Reddy.
GLOBAL CLIMATE FINANCE
NDC
USD 8 Million Climate Finance Investment
Received a catalytic USD 8 Million investment facility via the Danish Climate Finance Initiative for India to scale energy efficiency and cooling decarbonization.
SMART INFRASTRUCTURE
EDF PULSE
EDF Pulse India Top 10 Nominee
Nominated for EDF Pulse India Top 10 in the Resilient Smart Infrastructure category for smart energy automation and chilled water optimization.
BUSINESS MODEL INNOVATION
BASE · CaaS
Cooling-as-a-Service (CaaS) Pioneer
Supported by BASE to pioneer and scale the Cooling-as-a-Service business model across healthcare and industrial facilities in India.
CLEAN TECH INNOVATION
CII National Circle Energy Efficiency Competition
Smart Joules secured 1st Runner Up position at the CII National Circle Energy Efficiency Competition under Innovative Clean & Green Technology Start-up.
ENTREPRENEURIAL LEADERSHIP
BW DISRUPT
BW Disrupt 40 Under 40 Winner
Founder & CEO Arjun P. Gupta recognized as a trailblazing climate tech entrepreneur in BW Disrupt 40 Under 40.
Where you could fit.
Pick a team to filter the open roles below.
Find a role you'll love.
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Didn't find your role? Join our talent community or send us your CV.
Join our Slack talent community.
Roles open here every week. Join the community and you'll hear about them first, straight from the hiring teams.
- New roles posted in #open-roles before they go public
- Ask our engineers, operators and recruiters anything
- Invites to plant tours, webinars and campus events
Email us for an invite
Our talent team sends invites by email. Write to careers@smartjoules.in and we will add you.
Clear steps. Quick answers.
Most hires finish in three to four weeks. You can track your application status anytime on our job portal.
- 1Day 0
Apply
Two minutes on our job board. A CV is enough; no cover letter needed.
- 2Within 5 working days
Recruiter call
A 20-minute chat about you, the role and what matters to you.
- 3Week 2
Skills round
A technical or functional conversation with the people you'd work with.
- 4Week 2–3
Real-work exercise
A plant walk-through, a case or a coding task based on the actual job, not puzzles.
- 5Week 3–4
Leadership & offer
Meet a leader, talk GO GREEN, and get a decision either way.
Smart Joules never charges a fee to apply, interview or join.
Every genuine offer comes from an @smartjoules.in email address, and every role is listed here on smartan.life. If anyone asks you for money, don't pay. Report it to careers@smartjoules.in.
Looking after the people who look after buildings.
Family health coverMedical insurance for you, your spouse and children
Certifications paid forBEE Certified Energy Auditor, ASHRAE and cloud certifications
Site safety firstPPE, safety training and on-call support for every site
Internal movesSwitch teams, cities or tracks: technician → engineer → manager
Rewards for resultsPerformance bonuses tied to the savings you deliver
Time to rechargePaid leave, festival holidays and team offsites
Questions candidates ask us.
What makes a good Smartan?
A Smartan lives GO GREEN. You get things done and own your work like you own the company. You grow your knowledge every day and aren't afraid to rock the boat when the old way falls short. You put efficiency first, aim to make every client and colleague say WOW, and nurture deep bonds with the people around you. We can teach the skills. These values are what we hire for.
Do I need an HVAC background to join?
For site and design roles, yes. For technology, sales, finance, people and other corporate roles, no. We teach the cooling side, and many of our software engineers learned what a chiller is in their first month.
Where will I work?
Corporate and technology teams are mostly in Delhi NCR. Operations and project teams work at client sites in 28 cities across India, with growing teams in Bengaluru, Hyderabad, Chennai, Mumbai and Pune.
Can I apply for more than one role?
Yes. Apply for up to three roles that genuinely fit you. A recruiter will look at all of them together.
How do I check my application status?
Open “My applications” on our job portal, or reply to any email from our talent team. We aim to update every applicant, including those we don't move forward with.
Do you hire freshers and interns?
Yes. We hire interns and graduate engineers in operations, product and projects. Search for “intern” or pick the Internships filter.
See what we're up to this week.
Wins, launches and hiring news on LinkedIn. Office reels and team moments on Instagram.
India's only Efficiency-First company, driven by a vision to reduce 29 million tonnes of carbon emissions by 2030.